./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN --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 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 --- 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-6b4ec56 [2022-11-20 11:52:49,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:52:49,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:52:49,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:52:49,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:52:49,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:52:49,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:52:49,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:52:49,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:52:49,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:52:49,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:52:49,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:52:49,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:52:49,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:52:49,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:52:49,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:52:49,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:52:49,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:52:49,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:52:49,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:52:49,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:52:49,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:52:49,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:52:49,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:52:49,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:52:49,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:52:49,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:52:49,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:52:49,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:52:49,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:52:49,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:52:49,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:52:49,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:52:49,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:52:49,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:52:49,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:52:49,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:52:49,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:52:49,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:52:49,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:52:49,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:52:49,665 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:52:49,699 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:52:49,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:52:49,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:52:49,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:52:49,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:52:49,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:52:49,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:52:49,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:52:49,706 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:52:49,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:52:49,708 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:52:49,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:52:49,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:52:49,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:52:49,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:52:49,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:52:49,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:52:49,710 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:52:49,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:52:49,710 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:52:49,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:52:49,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:52:49,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:52:49,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:52:49,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:52:49,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:52:49,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:52:49,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:52:49,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:52:49,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:52:49,714 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:52:49,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:52:49,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:52:49,715 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_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d771c5dc4ab027f123135a7de4324b9be0c6bae288f44d0eaffc15d1836bd60 [2022-11-20 11:52:50,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:52:50,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:52:50,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:52:50,077 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:52:50,078 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:52:50,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/queue.i [2022-11-20 11:52:53,075 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:52:53,364 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:52:53,370 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/sv-benchmarks/c/pthread/queue.i [2022-11-20 11:52:53,389 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/data/7c8273055/b3af3f0a8a1d4e6f9eb341a8ee963eb0/FLAG6c6173171 [2022-11-20 11:52:53,413 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/data/7c8273055/b3af3f0a8a1d4e6f9eb341a8ee963eb0 [2022-11-20 11:52:53,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:52:53,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:52:53,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:52:53,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:52:53,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:52:53,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:52:53" (1/1) ... [2022-11-20 11:52:53,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@537d7f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:53, skipping insertion in model container [2022-11-20 11:52:53,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:52:53" (1/1) ... [2022-11-20 11:52:53,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:52:53,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:52:54,157 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/sv-benchmarks/c/pthread/queue.i[43284,43297] [2022-11-20 11:52:54,170 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/sv-benchmarks/c/pthread/queue.i[43491,43504] [2022-11-20 11:52:54,174 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/sv-benchmarks/c/pthread/queue.i[43772,43785] [2022-11-20 11:52:54,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:52:54,195 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:52:54,286 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/sv-benchmarks/c/pthread/queue.i[43284,43297] [2022-11-20 11:52:54,288 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/sv-benchmarks/c/pthread/queue.i[43491,43504] [2022-11-20 11:52:54,291 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/sv-benchmarks/c/pthread/queue.i[43772,43785] [2022-11-20 11:52:54,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:52:54,372 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:52:54,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54 WrapperNode [2022-11-20 11:52:54,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:52:54,378 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:52:54,378 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:52:54,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:52:54,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54" (1/1) ... [2022-11-20 11:52:54,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54" (1/1) ... [2022-11-20 11:52:54,461 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 250 [2022-11-20 11:52:54,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:52:54,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:52:54,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:52:54,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:52:54,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54" (1/1) ... [2022-11-20 11:52:54,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54" (1/1) ... [2022-11-20 11:52:54,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54" (1/1) ... [2022-11-20 11:52:54,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54" (1/1) ... [2022-11-20 11:52:54,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54" (1/1) ... [2022-11-20 11:52:54,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54" (1/1) ... [2022-11-20 11:52:54,493 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54" (1/1) ... [2022-11-20 11:52:54,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54" (1/1) ... [2022-11-20 11:52:54,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:52:54,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:52:54,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:52:54,500 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:52:54,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54" (1/1) ... [2022-11-20 11:52:54,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:52:54,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:52:54,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:52:54,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5c29d61-9d49-41b9-a15a-d200be479d81/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:52:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 11:52:54,578 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 11:52:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 11:52:54,579 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 11:52:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:52:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:52:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:52:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:52:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:52:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:52:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:52:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:52:54,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:52:54,592 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:52:54,816 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:52:54,818 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:52:55,294 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:52:55,310 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:52:55,312 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:52:55,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:52:55 BoogieIcfgContainer [2022-11-20 11:52:55,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:52:55,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:52:55,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:52:55,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:52:55,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:52:53" (1/3) ... [2022-11-20 11:52:55,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f9b14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:52:55, skipping insertion in model container [2022-11-20 11:52:55,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:52:54" (2/3) ... [2022-11-20 11:52:55,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f9b14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:52:55, skipping insertion in model container [2022-11-20 11:52:55,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:52:55" (3/3) ... [2022-11-20 11:52:55,327 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2022-11-20 11:52:55,336 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:52:55,346 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:52:55,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-20 11:52:55,347 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:52:55,491 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:52:55,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 280 transitions, 576 flow [2022-11-20 11:52:55,733 INFO L130 PetriNetUnfolder]: 15/278 cut-off events. [2022-11-20 11:52:55,733 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:52:55,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 278 events. 15/278 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 361 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 204. Up to 2 conditions per place. [2022-11-20 11:52:55,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 280 transitions, 576 flow [2022-11-20 11:52:55,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 268 transitions, 545 flow [2022-11-20 11:52:55,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:52:55,785 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;@1bc197c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:52:55,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-20 11:52:55,810 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2022-11-20 11:52:55,810 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:52:55,810 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:52:55,811 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:52:55,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:52:55,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:55,818 INFO L85 PathProgramCache]: Analyzing trace with hash 175708351, now seen corresponding path program 1 times [2022-11-20 11:52:55,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:55,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977076476] [2022-11-20 11:52:55,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:55,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:52:56,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:56,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977076476] [2022-11-20 11:52:56,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977076476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:56,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:56,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:52:56,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735789591] [2022-11-20 11:52:56,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:56,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:52:56,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:56,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:52:56,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:52:56,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 280 [2022-11-20 11:52:56,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 268 transitions, 545 flow. Second operand has 2 states, 2 states have (on average 267.5) internal successors, (535), 2 states have internal predecessors, (535), 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) [2022-11-20 11:52:56,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:52:56,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 280 [2022-11-20 11:52:56,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:52:56,352 INFO L130 PetriNetUnfolder]: 10/257 cut-off events. [2022-11-20 11:52:56,352 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-20 11:52:56,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 257 events. 10/257 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 275 event pairs, 0 based on Foata normal form. 7/252 useless extension candidates. Maximal degree in co-relation 197. Up to 4 conditions per place. [2022-11-20 11:52:56,361 INFO L137 encePairwiseOnDemand]: 275/280 looper letters, 3 selfloop transitions, 0 changer transitions 0/257 dead transitions. [2022-11-20 11:52:56,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 257 transitions, 529 flow [2022-11-20 11:52:56,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:52:56,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 11:52:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 542 transitions. [2022-11-20 11:52:56,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9678571428571429 [2022-11-20 11:52:56,385 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 542 transitions. [2022-11-20 11:52:56,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 542 transitions. [2022-11-20 11:52:56,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:52:56,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 542 transitions. [2022-11-20 11:52:56,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 271.0) internal successors, (542), 2 states have internal predecessors, (542), 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) [2022-11-20 11:52:56,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 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) [2022-11-20 11:52:56,409 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 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) [2022-11-20 11:52:56,411 INFO L175 Difference]: Start difference. First operand has 260 places, 268 transitions, 545 flow. Second operand 2 states and 542 transitions. [2022-11-20 11:52:56,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 257 transitions, 529 flow [2022-11-20 11:52:56,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 257 transitions, 524 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:52:56,426 INFO L231 Difference]: Finished difference. Result has 252 places, 257 transitions, 518 flow [2022-11-20 11:52:56,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=518, PETRI_PLACES=252, PETRI_TRANSITIONS=257} [2022-11-20 11:52:56,437 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, -8 predicate places. [2022-11-20 11:52:56,437 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 257 transitions, 518 flow [2022-11-20 11:52:56,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 267.5) internal successors, (535), 2 states have internal predecessors, (535), 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) [2022-11-20 11:52:56,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:52:56,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:52:56,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:52:56,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:52:56,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:56,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1869523395, now seen corresponding path program 1 times [2022-11-20 11:52:56,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:56,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166278935] [2022-11-20 11:52:56,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:56,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:52:57,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:57,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166278935] [2022-11-20 11:52:57,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166278935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:57,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:57,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:52:57,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240517792] [2022-11-20 11:52:57,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:57,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:52:57,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:57,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:52:57,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:52:57,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 280 [2022-11-20 11:52:57,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 257 transitions, 518 flow. Second operand has 12 states, 12 states have (on average 198.41666666666666) internal successors, (2381), 12 states have internal predecessors, (2381), 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) [2022-11-20 11:52:57,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:52:57,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 280 [2022-11-20 11:52:57,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:52:59,315 INFO L130 PetriNetUnfolder]: 1003/4123 cut-off events. [2022-11-20 11:52:59,315 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-11-20 11:52:59,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5642 conditions, 4123 events. 1003/4123 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 33885 event pairs, 789 based on Foata normal form. 0/3836 useless extension candidates. Maximal degree in co-relation 5639. Up to 1435 conditions per place. [2022-11-20 11:52:59,395 INFO L137 encePairwiseOnDemand]: 267/280 looper letters, 60 selfloop transitions, 12 changer transitions 0/253 dead transitions. [2022-11-20 11:52:59,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 253 transitions, 654 flow [2022-11-20 11:52:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:52:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-20 11:52:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2608 transitions. [2022-11-20 11:52:59,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7164835164835165 [2022-11-20 11:52:59,404 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2608 transitions. [2022-11-20 11:52:59,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2608 transitions. [2022-11-20 11:52:59,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:52:59,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2608 transitions. [2022-11-20 11:52:59,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 200.6153846153846) internal successors, (2608), 13 states have internal predecessors, (2608), 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) [2022-11-20 11:52:59,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 280.0) internal successors, (3920), 14 states have internal predecessors, (3920), 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) [2022-11-20 11:52:59,423 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 280.0) internal successors, (3920), 14 states have internal predecessors, (3920), 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) [2022-11-20 11:52:59,423 INFO L175 Difference]: Start difference. First operand has 252 places, 257 transitions, 518 flow. Second operand 13 states and 2608 transitions. [2022-11-20 11:52:59,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 253 transitions, 654 flow [2022-11-20 11:52:59,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 253 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:52:59,433 INFO L231 Difference]: Finished difference. Result has 261 places, 253 transitions, 534 flow [2022-11-20 11:52:59,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=534, PETRI_PLACES=261, PETRI_TRANSITIONS=253} [2022-11-20 11:52:59,435 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 1 predicate places. [2022-11-20 11:52:59,435 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 253 transitions, 534 flow [2022-11-20 11:52:59,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 198.41666666666666) internal successors, (2381), 12 states have internal predecessors, (2381), 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) [2022-11-20 11:52:59,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:52:59,437 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:52:59,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:52:59,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:52:59,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:59,440 INFO L85 PathProgramCache]: Analyzing trace with hash 519717662, now seen corresponding path program 1 times [2022-11-20 11:52:59,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:59,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924540483] [2022-11-20 11:52:59,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:59,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:59,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:52:59,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:59,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924540483] [2022-11-20 11:52:59,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924540483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:59,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:59,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:52:59,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225508706] [2022-11-20 11:52:59,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:59,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:52:59,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:59,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:52:59,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:52:59,597 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 280 [2022-11-20 11:52:59,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 253 transitions, 534 flow. Second operand has 4 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 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) [2022-11-20 11:52:59,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:52:59,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 280 [2022-11-20 11:52:59,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:52:59,715 INFO L130 PetriNetUnfolder]: 26/438 cut-off events. [2022-11-20 11:52:59,715 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:52:59,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 438 events. 26/438 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1055 event pairs, 2 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 501. Up to 13 conditions per place. [2022-11-20 11:52:59,719 INFO L137 encePairwiseOnDemand]: 274/280 looper letters, 9 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-20 11:52:59,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 253 transitions, 566 flow [2022-11-20 11:52:59,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:52:59,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 11:52:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1039 transitions. [2022-11-20 11:52:59,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9276785714285715 [2022-11-20 11:52:59,724 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1039 transitions. [2022-11-20 11:52:59,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1039 transitions. [2022-11-20 11:52:59,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:52:59,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1039 transitions. [2022-11-20 11:52:59,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 259.75) internal successors, (1039), 4 states have internal predecessors, (1039), 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) [2022-11-20 11:52:59,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 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) [2022-11-20 11:52:59,731 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 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) [2022-11-20 11:52:59,732 INFO L175 Difference]: Start difference. First operand has 261 places, 253 transitions, 534 flow. Second operand 4 states and 1039 transitions. [2022-11-20 11:52:59,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 253 transitions, 566 flow [2022-11-20 11:52:59,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 253 transitions, 543 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-11-20 11:52:59,737 INFO L231 Difference]: Finished difference. Result has 252 places, 251 transitions, 517 flow [2022-11-20 11:52:59,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=517, PETRI_PLACES=252, PETRI_TRANSITIONS=251} [2022-11-20 11:52:59,741 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, -8 predicate places. [2022-11-20 11:52:59,741 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 251 transitions, 517 flow [2022-11-20 11:52:59,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.75) internal successors, (1031), 4 states have internal predecessors, (1031), 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) [2022-11-20 11:52:59,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:52:59,742 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:52:59,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:52:59,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:52:59,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:59,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1558155262, now seen corresponding path program 1 times [2022-11-20 11:52:59,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:59,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971031920] [2022-11-20 11:52:59,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:59,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:52:59,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:59,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971031920] [2022-11-20 11:52:59,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971031920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:59,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:52:59,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:52:59,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121360175] [2022-11-20 11:52:59,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:59,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:52:59,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:59,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:52:59,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:52:59,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 280 [2022-11-20 11:52:59,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 251 transitions, 517 flow. Second operand has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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) [2022-11-20 11:52:59,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:52:59,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 280 [2022-11-20 11:52:59,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:53:00,043 INFO L130 PetriNetUnfolder]: 33/533 cut-off events. [2022-11-20 11:53:00,043 INFO L131 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-11-20 11:53:00,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 533 events. 33/533 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1261 event pairs, 2 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 588. Up to 23 conditions per place. [2022-11-20 11:53:00,047 INFO L137 encePairwiseOnDemand]: 276/280 looper letters, 10 selfloop transitions, 3 changer transitions 0/255 dead transitions. [2022-11-20 11:53:00,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 255 transitions, 554 flow [2022-11-20 11:53:00,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:53:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:53:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2022-11-20 11:53:00,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9488095238095238 [2022-11-20 11:53:00,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2022-11-20 11:53:00,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2022-11-20 11:53:00,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:53:00,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2022-11-20 11:53:00,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 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) [2022-11-20 11:53:00,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 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) [2022-11-20 11:53:00,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 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) [2022-11-20 11:53:00,057 INFO L175 Difference]: Start difference. First operand has 252 places, 251 transitions, 517 flow. Second operand 3 states and 797 transitions. [2022-11-20 11:53:00,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 255 transitions, 554 flow [2022-11-20 11:53:00,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 255 transitions, 544 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:53:00,063 INFO L231 Difference]: Finished difference. Result has 252 places, 252 transitions, 522 flow [2022-11-20 11:53:00,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=522, PETRI_PLACES=252, PETRI_TRANSITIONS=252} [2022-11-20 11:53:00,064 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, -8 predicate places. [2022-11-20 11:53:00,064 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 252 transitions, 522 flow [2022-11-20 11:53:00,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.6666666666667) internal successors, (788), 3 states have internal predecessors, (788), 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) [2022-11-20 11:53:00,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:53:00,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:00,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:53:00,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:53:00,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:00,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2074050997, now seen corresponding path program 1 times [2022-11-20 11:53:00,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:00,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360537856] [2022-11-20 11:53:00,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:00,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:00,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:00,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360537856] [2022-11-20 11:53:00,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360537856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:00,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:00,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:53:00,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059710927] [2022-11-20 11:53:00,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:00,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:53:00,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:00,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:53:00,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:53:00,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 280 [2022-11-20 11:53:00,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 252 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 259.75) internal successors, (1039), 4 states have internal predecessors, (1039), 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) [2022-11-20 11:53:00,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:53:00,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 280 [2022-11-20 11:53:00,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:53:00,356 INFO L130 PetriNetUnfolder]: 51/842 cut-off events. [2022-11-20 11:53:00,357 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-20 11:53:00,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 842 events. 51/842 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3013 event pairs, 7 based on Foata normal form. 0/794 useless extension candidates. Maximal degree in co-relation 946. Up to 27 conditions per place. [2022-11-20 11:53:00,363 INFO L137 encePairwiseOnDemand]: 275/280 looper letters, 15 selfloop transitions, 5 changer transitions 0/260 dead transitions. [2022-11-20 11:53:00,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 260 transitions, 585 flow [2022-11-20 11:53:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:53:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:53:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1311 transitions. [2022-11-20 11:53:00,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9364285714285714 [2022-11-20 11:53:00,367 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1311 transitions. [2022-11-20 11:53:00,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1311 transitions. [2022-11-20 11:53:00,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:53:00,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1311 transitions. [2022-11-20 11:53:00,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 262.2) internal successors, (1311), 5 states have internal predecessors, (1311), 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) [2022-11-20 11:53:00,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 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) [2022-11-20 11:53:00,374 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 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) [2022-11-20 11:53:00,375 INFO L175 Difference]: Start difference. First operand has 252 places, 252 transitions, 522 flow. Second operand 5 states and 1311 transitions. [2022-11-20 11:53:00,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 260 transitions, 585 flow [2022-11-20 11:53:00,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 260 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:53:00,380 INFO L231 Difference]: Finished difference. Result has 258 places, 255 transitions, 549 flow [2022-11-20 11:53:00,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=549, PETRI_PLACES=258, PETRI_TRANSITIONS=255} [2022-11-20 11:53:00,382 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, -2 predicate places. [2022-11-20 11:53:00,382 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 255 transitions, 549 flow [2022-11-20 11:53:00,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 259.75) internal successors, (1039), 4 states have internal predecessors, (1039), 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) [2022-11-20 11:53:00,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:53:00,383 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:00,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:53:00,384 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:53:00,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:00,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1269950929, now seen corresponding path program 1 times [2022-11-20 11:53:00,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:00,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840235201] [2022-11-20 11:53:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:00,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:01,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:01,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840235201] [2022-11-20 11:53:01,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840235201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:01,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:01,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-20 11:53:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639661355] [2022-11-20 11:53:01,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:01,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:53:01,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:01,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:53:01,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:53:01,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 280 [2022-11-20 11:53:01,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 255 transitions, 549 flow. Second operand has 16 states, 16 states have (on average 178.5) internal successors, (2856), 16 states have internal predecessors, (2856), 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) [2022-11-20 11:53:01,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:53:01,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 280 [2022-11-20 11:53:01,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:53:04,623 INFO L130 PetriNetUnfolder]: 1599/6675 cut-off events. [2022-11-20 11:53:04,624 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2022-11-20 11:53:04,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9644 conditions, 6675 events. 1599/6675 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 58353 event pairs, 1290 based on Foata normal form. 0/6323 useless extension candidates. Maximal degree in co-relation 9637. Up to 2556 conditions per place. [2022-11-20 11:53:04,673 INFO L137 encePairwiseOnDemand]: 262/280 looper letters, 92 selfloop transitions, 22 changer transitions 0/277 dead transitions. [2022-11-20 11:53:04,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 277 transitions, 823 flow [2022-11-20 11:53:04,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:53:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 11:53:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2916 transitions. [2022-11-20 11:53:04,684 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6508928571428572 [2022-11-20 11:53:04,684 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2916 transitions. [2022-11-20 11:53:04,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2916 transitions. [2022-11-20 11:53:04,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:53:04,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2916 transitions. [2022-11-20 11:53:04,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 182.25) internal successors, (2916), 16 states have internal predecessors, (2916), 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) [2022-11-20 11:53:04,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 280.0) internal successors, (4760), 17 states have internal predecessors, (4760), 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) [2022-11-20 11:53:04,707 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 280.0) internal successors, (4760), 17 states have internal predecessors, (4760), 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) [2022-11-20 11:53:04,707 INFO L175 Difference]: Start difference. First operand has 258 places, 255 transitions, 549 flow. Second operand 16 states and 2916 transitions. [2022-11-20 11:53:04,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 277 transitions, 823 flow [2022-11-20 11:53:04,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 277 transitions, 823 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:53:04,717 INFO L231 Difference]: Finished difference. Result has 279 places, 268 transitions, 662 flow [2022-11-20 11:53:04,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=662, PETRI_PLACES=279, PETRI_TRANSITIONS=268} [2022-11-20 11:53:04,720 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 19 predicate places. [2022-11-20 11:53:04,721 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 268 transitions, 662 flow [2022-11-20 11:53:04,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 178.5) internal successors, (2856), 16 states have internal predecessors, (2856), 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) [2022-11-20 11:53:04,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:53:04,723 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:04,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:53:04,723 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:53:04,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -964245300, now seen corresponding path program 1 times [2022-11-20 11:53:04,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:04,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115051335] [2022-11-20 11:53:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:04,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:07,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:07,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115051335] [2022-11-20 11:53:07,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115051335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:07,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:07,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-20 11:53:07,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344585238] [2022-11-20 11:53:07,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:07,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 11:53:07,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:07,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 11:53:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:53:07,821 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 280 [2022-11-20 11:53:07,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 268 transitions, 662 flow. Second operand has 27 states, 27 states have (on average 164.4814814814815) internal successors, (4441), 27 states have internal predecessors, (4441), 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) [2022-11-20 11:53:07,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:53:07,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 280 [2022-11-20 11:53:07,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:53:12,433 INFO L130 PetriNetUnfolder]: 1457/6035 cut-off events. [2022-11-20 11:53:12,433 INFO L131 PetriNetUnfolder]: For 117/121 co-relation queries the response was YES. [2022-11-20 11:53:12,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8890 conditions, 6035 events. 1457/6035 cut-off events. For 117/121 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 51239 event pairs, 1160 based on Foata normal form. 2/5759 useless extension candidates. Maximal degree in co-relation 8876. Up to 2311 conditions per place. [2022-11-20 11:53:12,484 INFO L137 encePairwiseOnDemand]: 250/280 looper letters, 104 selfloop transitions, 43 changer transitions 0/302 dead transitions. [2022-11-20 11:53:12,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 302 transitions, 1046 flow [2022-11-20 11:53:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 11:53:12,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-20 11:53:12,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4522 transitions. [2022-11-20 11:53:12,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5981481481481481 [2022-11-20 11:53:12,602 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4522 transitions. [2022-11-20 11:53:12,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4522 transitions. [2022-11-20 11:53:12,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:53:12,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4522 transitions. [2022-11-20 11:53:12,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 167.4814814814815) internal successors, (4522), 27 states have internal predecessors, (4522), 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) [2022-11-20 11:53:12,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 280.0) internal successors, (7840), 28 states have internal predecessors, (7840), 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) [2022-11-20 11:53:12,663 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 280.0) internal successors, (7840), 28 states have internal predecessors, (7840), 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) [2022-11-20 11:53:12,663 INFO L175 Difference]: Start difference. First operand has 279 places, 268 transitions, 662 flow. Second operand 27 states and 4522 transitions. [2022-11-20 11:53:12,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 302 transitions, 1046 flow [2022-11-20 11:53:12,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 302 transitions, 1031 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 11:53:12,675 INFO L231 Difference]: Finished difference. Result has 308 places, 288 transitions, 870 flow [2022-11-20 11:53:12,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=870, PETRI_PLACES=308, PETRI_TRANSITIONS=288} [2022-11-20 11:53:12,680 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 48 predicate places. [2022-11-20 11:53:12,680 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 288 transitions, 870 flow [2022-11-20 11:53:12,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 164.4814814814815) internal successors, (4441), 27 states have internal predecessors, (4441), 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) [2022-11-20 11:53:12,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:53:12,682 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:12,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:53:12,683 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:53:12,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:12,683 INFO L85 PathProgramCache]: Analyzing trace with hash -717945193, now seen corresponding path program 1 times [2022-11-20 11:53:12,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:12,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510177719] [2022-11-20 11:53:12,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:12,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:17,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510177719] [2022-11-20 11:53:17,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510177719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:17,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:17,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 11:53:17,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341474833] [2022-11-20 11:53:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:17,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:53:17,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:53:17,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:53:17,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 280 [2022-11-20 11:53:17,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 288 transitions, 870 flow. Second operand has 20 states, 20 states have (on average 176.85) internal successors, (3537), 20 states have internal predecessors, (3537), 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) [2022-11-20 11:53:17,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:53:17,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 280 [2022-11-20 11:53:17,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:53:22,197 INFO L130 PetriNetUnfolder]: 1599/6694 cut-off events. [2022-11-20 11:53:22,197 INFO L131 PetriNetUnfolder]: For 380/385 co-relation queries the response was YES. [2022-11-20 11:53:22,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10086 conditions, 6694 events. 1599/6694 cut-off events. For 380/385 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 58486 event pairs, 724 based on Foata normal form. 3/6355 useless extension candidates. Maximal degree in co-relation 10061. Up to 2472 conditions per place. [2022-11-20 11:53:22,273 INFO L137 encePairwiseOnDemand]: 258/280 looper letters, 119 selfloop transitions, 39 changer transitions 0/327 dead transitions. [2022-11-20 11:53:22,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 327 transitions, 1320 flow [2022-11-20 11:53:22,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:53:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:53:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3792 transitions. [2022-11-20 11:53:22,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6448979591836734 [2022-11-20 11:53:22,284 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3792 transitions. [2022-11-20 11:53:22,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3792 transitions. [2022-11-20 11:53:22,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:53:22,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3792 transitions. [2022-11-20 11:53:22,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 180.57142857142858) internal successors, (3792), 21 states have internal predecessors, (3792), 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) [2022-11-20 11:53:22,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 280.0) internal successors, (6160), 22 states have internal predecessors, (6160), 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) [2022-11-20 11:53:22,432 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 280.0) internal successors, (6160), 22 states have internal predecessors, (6160), 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) [2022-11-20 11:53:22,433 INFO L175 Difference]: Start difference. First operand has 308 places, 288 transitions, 870 flow. Second operand 21 states and 3792 transitions. [2022-11-20 11:53:22,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 327 transitions, 1320 flow [2022-11-20 11:53:22,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 327 transitions, 1278 flow, removed 7 selfloop flow, removed 13 redundant places. [2022-11-20 11:53:22,449 INFO L231 Difference]: Finished difference. Result has 320 places, 300 transitions, 1007 flow [2022-11-20 11:53:22,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1007, PETRI_PLACES=320, PETRI_TRANSITIONS=300} [2022-11-20 11:53:22,453 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 60 predicate places. [2022-11-20 11:53:22,454 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 300 transitions, 1007 flow [2022-11-20 11:53:22,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 176.85) internal successors, (3537), 20 states have internal predecessors, (3537), 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) [2022-11-20 11:53:22,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:53:22,456 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:22,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:53:22,456 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:53:22,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:22,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1484426723, now seen corresponding path program 2 times [2022-11-20 11:53:22,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:22,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620349314] [2022-11-20 11:53:22,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:22,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:27,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:27,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620349314] [2022-11-20 11:53:27,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620349314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:27,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:27,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:53:27,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512921879] [2022-11-20 11:53:27,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:27,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:53:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:27,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:53:27,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:53:27,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 280 [2022-11-20 11:53:27,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 300 transitions, 1007 flow. Second operand has 21 states, 21 states have (on average 176.71428571428572) internal successors, (3711), 21 states have internal predecessors, (3711), 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) [2022-11-20 11:53:27,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:53:27,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 280 [2022-11-20 11:53:27,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:53:32,501 INFO L130 PetriNetUnfolder]: 1620/6772 cut-off events. [2022-11-20 11:53:32,502 INFO L131 PetriNetUnfolder]: For 551/556 co-relation queries the response was YES. [2022-11-20 11:53:32,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10386 conditions, 6772 events. 1620/6772 cut-off events. For 551/556 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 59120 event pairs, 725 based on Foata normal form. 3/6433 useless extension candidates. Maximal degree in co-relation 10356. Up to 2475 conditions per place. [2022-11-20 11:53:32,549 INFO L137 encePairwiseOnDemand]: 259/280 looper letters, 119 selfloop transitions, 45 changer transitions 0/333 dead transitions. [2022-11-20 11:53:32,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 333 transitions, 1451 flow [2022-11-20 11:53:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:53:32,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:53:32,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3790 transitions. [2022-11-20 11:53:32,560 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6445578231292517 [2022-11-20 11:53:32,560 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3790 transitions. [2022-11-20 11:53:32,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3790 transitions. [2022-11-20 11:53:32,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:53:32,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3790 transitions. [2022-11-20 11:53:32,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 180.47619047619048) internal successors, (3790), 21 states have internal predecessors, (3790), 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) [2022-11-20 11:53:32,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 280.0) internal successors, (6160), 22 states have internal predecessors, (6160), 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) [2022-11-20 11:53:32,587 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 280.0) internal successors, (6160), 22 states have internal predecessors, (6160), 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) [2022-11-20 11:53:32,587 INFO L175 Difference]: Start difference. First operand has 320 places, 300 transitions, 1007 flow. Second operand 21 states and 3790 transitions. [2022-11-20 11:53:32,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 333 transitions, 1451 flow [2022-11-20 11:53:32,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 333 transitions, 1425 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-11-20 11:53:32,601 INFO L231 Difference]: Finished difference. Result has 334 places, 307 transitions, 1163 flow [2022-11-20 11:53:32,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1163, PETRI_PLACES=334, PETRI_TRANSITIONS=307} [2022-11-20 11:53:32,602 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 74 predicate places. [2022-11-20 11:53:32,603 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 307 transitions, 1163 flow [2022-11-20 11:53:32,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 176.71428571428572) internal successors, (3711), 21 states have internal predecessors, (3711), 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) [2022-11-20 11:53:32,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:53:32,604 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:32,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:53:32,605 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:53:32,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:32,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1069805465, now seen corresponding path program 3 times [2022-11-20 11:53:32,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:32,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065148854] [2022-11-20 11:53:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:32,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:36,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:36,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065148854] [2022-11-20 11:53:36,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065148854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:36,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:36,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 11:53:36,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228968622] [2022-11-20 11:53:36,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:36,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 11:53:36,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:36,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 11:53:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:53:36,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 280 [2022-11-20 11:53:36,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 307 transitions, 1163 flow. Second operand has 21 states, 21 states have (on average 176.71428571428572) internal successors, (3711), 21 states have internal predecessors, (3711), 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) [2022-11-20 11:53:36,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:53:36,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 280 [2022-11-20 11:53:36,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:53:41,332 INFO L130 PetriNetUnfolder]: 1611/6757 cut-off events. [2022-11-20 11:53:41,332 INFO L131 PetriNetUnfolder]: For 882/887 co-relation queries the response was YES. [2022-11-20 11:53:41,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10492 conditions, 6757 events. 1611/6757 cut-off events. For 882/887 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 59264 event pairs, 729 based on Foata normal form. 3/6418 useless extension candidates. Maximal degree in co-relation 10458. Up to 2410 conditions per place. [2022-11-20 11:53:41,373 INFO L137 encePairwiseOnDemand]: 260/280 looper letters, 108 selfloop transitions, 43 changer transitions 0/320 dead transitions. [2022-11-20 11:53:41,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 320 transitions, 1501 flow [2022-11-20 11:53:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:53:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-20 11:53:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3420 transitions. [2022-11-20 11:53:41,388 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2022-11-20 11:53:41,388 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3420 transitions. [2022-11-20 11:53:41,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3420 transitions. [2022-11-20 11:53:41,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:53:41,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3420 transitions. [2022-11-20 11:53:41,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 180.0) internal successors, (3420), 19 states have internal predecessors, (3420), 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) [2022-11-20 11:53:41,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 280.0) internal successors, (5600), 20 states have internal predecessors, (5600), 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) [2022-11-20 11:53:41,414 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 280.0) internal successors, (5600), 20 states have internal predecessors, (5600), 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) [2022-11-20 11:53:41,414 INFO L175 Difference]: Start difference. First operand has 334 places, 307 transitions, 1163 flow. Second operand 19 states and 3420 transitions. [2022-11-20 11:53:41,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 320 transitions, 1501 flow [2022-11-20 11:53:41,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 320 transitions, 1453 flow, removed 5 selfloop flow, removed 14 redundant places. [2022-11-20 11:53:41,429 INFO L231 Difference]: Finished difference. Result has 336 places, 304 transitions, 1189 flow [2022-11-20 11:53:41,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1189, PETRI_PLACES=336, PETRI_TRANSITIONS=304} [2022-11-20 11:53:41,431 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 76 predicate places. [2022-11-20 11:53:41,431 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 304 transitions, 1189 flow [2022-11-20 11:53:41,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 176.71428571428572) internal successors, (3711), 21 states have internal predecessors, (3711), 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) [2022-11-20 11:53:41,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:53:41,433 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:41,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:53:41,434 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:53:41,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash 804214104, now seen corresponding path program 1 times [2022-11-20 11:53:41,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:41,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216275084] [2022-11-20 11:53:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:41,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:47,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:47,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216275084] [2022-11-20 11:53:47,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216275084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:47,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:47,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-20 11:53:47,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762948704] [2022-11-20 11:53:47,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:47,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:53:47,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:47,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:53:47,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:53:47,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 280 [2022-11-20 11:53:47,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 304 transitions, 1189 flow. Second operand has 31 states, 31 states have (on average 163.19354838709677) internal successors, (5059), 31 states have internal predecessors, (5059), 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) [2022-11-20 11:53:47,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:53:47,657 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 280 [2022-11-20 11:53:47,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:53:55,761 INFO L130 PetriNetUnfolder]: 1548/6468 cut-off events. [2022-11-20 11:53:55,761 INFO L131 PetriNetUnfolder]: For 1048/1052 co-relation queries the response was YES. [2022-11-20 11:53:55,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10289 conditions, 6468 events. 1548/6468 cut-off events. For 1048/1052 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 55101 event pairs, 920 based on Foata normal form. 3/6186 useless extension candidates. Maximal degree in co-relation 10256. Up to 2266 conditions per place. [2022-11-20 11:53:55,825 INFO L137 encePairwiseOnDemand]: 246/280 looper letters, 135 selfloop transitions, 71 changer transitions 0/361 dead transitions. [2022-11-20 11:53:55,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 361 transitions, 1790 flow [2022-11-20 11:53:55,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:53:55,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:53:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 5166 transitions. [2022-11-20 11:53:55,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5951612903225807 [2022-11-20 11:53:55,839 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 5166 transitions. [2022-11-20 11:53:55,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 5166 transitions. [2022-11-20 11:53:55,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:53:55,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 5166 transitions. [2022-11-20 11:53:55,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 166.6451612903226) internal successors, (5166), 31 states have internal predecessors, (5166), 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) [2022-11-20 11:53:55,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 280.0) internal successors, (8960), 32 states have internal predecessors, (8960), 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) [2022-11-20 11:53:55,872 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 280.0) internal successors, (8960), 32 states have internal predecessors, (8960), 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) [2022-11-20 11:53:55,872 INFO L175 Difference]: Start difference. First operand has 336 places, 304 transitions, 1189 flow. Second operand 31 states and 5166 transitions. [2022-11-20 11:53:55,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 361 transitions, 1790 flow [2022-11-20 11:53:55,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 361 transitions, 1700 flow, removed 0 selfloop flow, removed 18 redundant places. [2022-11-20 11:53:55,890 INFO L231 Difference]: Finished difference. Result has 359 places, 316 transitions, 1400 flow [2022-11-20 11:53:55,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1400, PETRI_PLACES=359, PETRI_TRANSITIONS=316} [2022-11-20 11:53:55,892 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 99 predicate places. [2022-11-20 11:53:55,892 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 316 transitions, 1400 flow [2022-11-20 11:53:55,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 163.19354838709677) internal successors, (5059), 31 states have internal predecessors, (5059), 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) [2022-11-20 11:53:55,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:53:55,894 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:55,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:53:55,895 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:53:55,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:55,895 INFO L85 PathProgramCache]: Analyzing trace with hash -62699994, now seen corresponding path program 2 times [2022-11-20 11:53:55,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:55,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447891565] [2022-11-20 11:53:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:55,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:53:58,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:58,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447891565] [2022-11-20 11:53:58,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447891565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:53:58,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:53:58,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-20 11:53:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676136727] [2022-11-20 11:53:58,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:53:58,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:53:58,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:58,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:53:58,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:53:58,469 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 280 [2022-11-20 11:53:58,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 316 transitions, 1400 flow. Second operand has 29 states, 29 states have (on average 163.3448275862069) internal successors, (4737), 29 states have internal predecessors, (4737), 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) [2022-11-20 11:53:58,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:53:58,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 280 [2022-11-20 11:53:58,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:02,803 INFO L130 PetriNetUnfolder]: 1587/6582 cut-off events. [2022-11-20 11:54:02,803 INFO L131 PetriNetUnfolder]: For 1403/1407 co-relation queries the response was YES. [2022-11-20 11:54:02,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10806 conditions, 6582 events. 1587/6582 cut-off events. For 1403/1407 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 55937 event pairs, 688 based on Foata normal form. 3/6254 useless extension candidates. Maximal degree in co-relation 10762. Up to 2116 conditions per place. [2022-11-20 11:54:02,864 INFO L137 encePairwiseOnDemand]: 248/280 looper letters, 142 selfloop transitions, 69 changer transitions 0/366 dead transitions. [2022-11-20 11:54:02,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 366 transitions, 1988 flow [2022-11-20 11:54:02,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:54:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 11:54:02,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4834 transitions. [2022-11-20 11:54:02,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5953201970443349 [2022-11-20 11:54:02,872 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4834 transitions. [2022-11-20 11:54:02,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4834 transitions. [2022-11-20 11:54:02,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:02,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4834 transitions. [2022-11-20 11:54:02,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 166.68965517241378) internal successors, (4834), 29 states have internal predecessors, (4834), 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) [2022-11-20 11:54:02,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 280.0) internal successors, (8400), 30 states have internal predecessors, (8400), 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) [2022-11-20 11:54:02,896 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 280.0) internal successors, (8400), 30 states have internal predecessors, (8400), 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) [2022-11-20 11:54:02,896 INFO L175 Difference]: Start difference. First operand has 359 places, 316 transitions, 1400 flow. Second operand 29 states and 4834 transitions. [2022-11-20 11:54:02,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 366 transitions, 1988 flow [2022-11-20 11:54:02,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 366 transitions, 1895 flow, removed 14 selfloop flow, removed 19 redundant places. [2022-11-20 11:54:02,914 INFO L231 Difference]: Finished difference. Result has 373 places, 323 transitions, 1551 flow [2022-11-20 11:54:02,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1551, PETRI_PLACES=373, PETRI_TRANSITIONS=323} [2022-11-20 11:54:02,916 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 113 predicate places. [2022-11-20 11:54:02,916 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 323 transitions, 1551 flow [2022-11-20 11:54:02,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 163.3448275862069) internal successors, (4737), 29 states have internal predecessors, (4737), 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) [2022-11-20 11:54:02,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:02,918 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:02,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:54:02,918 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:54:02,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:02,919 INFO L85 PathProgramCache]: Analyzing trace with hash -181604522, now seen corresponding path program 3 times [2022-11-20 11:54:02,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:02,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960620850] [2022-11-20 11:54:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:02,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:05,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:05,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960620850] [2022-11-20 11:54:05,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960620850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:05,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:05,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-20 11:54:05,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111510970] [2022-11-20 11:54:05,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:05,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:54:05,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:05,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:54:05,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:54:05,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 280 [2022-11-20 11:54:05,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 323 transitions, 1551 flow. Second operand has 29 states, 29 states have (on average 163.3448275862069) internal successors, (4737), 29 states have internal predecessors, (4737), 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) [2022-11-20 11:54:05,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:05,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 280 [2022-11-20 11:54:05,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:10,002 INFO L130 PetriNetUnfolder]: 1614/6747 cut-off events. [2022-11-20 11:54:10,002 INFO L131 PetriNetUnfolder]: For 1689/1696 co-relation queries the response was YES. [2022-11-20 11:54:10,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11241 conditions, 6747 events. 1614/6747 cut-off events. For 1689/1696 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 57463 event pairs, 677 based on Foata normal form. 4/6411 useless extension candidates. Maximal degree in co-relation 11193. Up to 2119 conditions per place. [2022-11-20 11:54:10,075 INFO L137 encePairwiseOnDemand]: 248/280 looper letters, 142 selfloop transitions, 73 changer transitions 0/370 dead transitions. [2022-11-20 11:54:10,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 370 transitions, 2140 flow [2022-11-20 11:54:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 11:54:10,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 11:54:10,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4832 transitions. [2022-11-20 11:54:10,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5950738916256157 [2022-11-20 11:54:10,088 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4832 transitions. [2022-11-20 11:54:10,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4832 transitions. [2022-11-20 11:54:10,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:10,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4832 transitions. [2022-11-20 11:54:10,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 166.6206896551724) internal successors, (4832), 29 states have internal predecessors, (4832), 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) [2022-11-20 11:54:10,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 280.0) internal successors, (8400), 30 states have internal predecessors, (8400), 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) [2022-11-20 11:54:10,117 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 280.0) internal successors, (8400), 30 states have internal predecessors, (8400), 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) [2022-11-20 11:54:10,118 INFO L175 Difference]: Start difference. First operand has 373 places, 323 transitions, 1551 flow. Second operand 29 states and 4832 transitions. [2022-11-20 11:54:10,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 370 transitions, 2140 flow [2022-11-20 11:54:10,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 370 transitions, 2042 flow, removed 5 selfloop flow, removed 22 redundant places. [2022-11-20 11:54:10,142 INFO L231 Difference]: Finished difference. Result has 383 places, 328 transitions, 1697 flow [2022-11-20 11:54:10,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1697, PETRI_PLACES=383, PETRI_TRANSITIONS=328} [2022-11-20 11:54:10,144 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 123 predicate places. [2022-11-20 11:54:10,145 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 328 transitions, 1697 flow [2022-11-20 11:54:10,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 163.3448275862069) internal successors, (4737), 29 states have internal predecessors, (4737), 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) [2022-11-20 11:54:10,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:10,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:10,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:54:10,147 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:54:10,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:10,148 INFO L85 PathProgramCache]: Analyzing trace with hash 862032364, now seen corresponding path program 4 times [2022-11-20 11:54:10,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:10,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968768743] [2022-11-20 11:54:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:10,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:12,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:12,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968768743] [2022-11-20 11:54:12,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968768743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:12,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:12,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-11-20 11:54:12,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734792467] [2022-11-20 11:54:12,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:12,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 11:54:12,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:12,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 11:54:12,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2022-11-20 11:54:12,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 280 [2022-11-20 11:54:12,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 328 transitions, 1697 flow. Second operand has 29 states, 29 states have (on average 163.3448275862069) internal successors, (4737), 29 states have internal predecessors, (4737), 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) [2022-11-20 11:54:12,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:12,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 280 [2022-11-20 11:54:12,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:16,528 INFO L130 PetriNetUnfolder]: 935/4024 cut-off events. [2022-11-20 11:54:16,528 INFO L131 PetriNetUnfolder]: For 1966/1972 co-relation queries the response was YES. [2022-11-20 11:54:16,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7379 conditions, 4024 events. 935/4024 cut-off events. For 1966/1972 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 28614 event pairs, 354 based on Foata normal form. 3/3834 useless extension candidates. Maximal degree in co-relation 7328. Up to 1092 conditions per place. [2022-11-20 11:54:16,558 INFO L137 encePairwiseOnDemand]: 250/280 looper letters, 131 selfloop transitions, 71 changer transitions 0/349 dead transitions. [2022-11-20 11:54:16,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 349 transitions, 2154 flow [2022-11-20 11:54:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-20 11:54:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-20 11:54:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4653 transitions. [2022-11-20 11:54:16,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5934948979591836 [2022-11-20 11:54:16,566 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4653 transitions. [2022-11-20 11:54:16,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4653 transitions. [2022-11-20 11:54:16,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:16,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4653 transitions. [2022-11-20 11:54:16,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 166.17857142857142) internal successors, (4653), 28 states have internal predecessors, (4653), 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) [2022-11-20 11:54:16,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 280.0) internal successors, (8120), 29 states have internal predecessors, (8120), 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) [2022-11-20 11:54:16,590 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 280.0) internal successors, (8120), 29 states have internal predecessors, (8120), 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) [2022-11-20 11:54:16,590 INFO L175 Difference]: Start difference. First operand has 383 places, 328 transitions, 1697 flow. Second operand 28 states and 4653 transitions. [2022-11-20 11:54:16,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 349 transitions, 2154 flow [2022-11-20 11:54:16,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 349 transitions, 2015 flow, removed 3 selfloop flow, removed 32 redundant places. [2022-11-20 11:54:16,613 INFO L231 Difference]: Finished difference. Result has 370 places, 317 transitions, 1662 flow [2022-11-20 11:54:16,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1662, PETRI_PLACES=370, PETRI_TRANSITIONS=317} [2022-11-20 11:54:16,614 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 110 predicate places. [2022-11-20 11:54:16,614 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 317 transitions, 1662 flow [2022-11-20 11:54:16,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 163.3448275862069) internal successors, (4737), 29 states have internal predecessors, (4737), 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) [2022-11-20 11:54:16,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:16,616 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:16,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:54:16,616 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:54:16,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:16,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1046288481, now seen corresponding path program 1 times [2022-11-20 11:54:16,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:16,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038983388] [2022-11-20 11:54:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:16,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:16,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:16,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038983388] [2022-11-20 11:54:16,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038983388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:16,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:16,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:54:16,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829282270] [2022-11-20 11:54:16,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:16,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:54:16,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:54:16,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:54:16,800 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 280 [2022-11-20 11:54:16,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 317 transitions, 1662 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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) [2022-11-20 11:54:16,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:16,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 280 [2022-11-20 11:54:16,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:17,072 INFO L130 PetriNetUnfolder]: 96/1295 cut-off events. [2022-11-20 11:54:17,073 INFO L131 PetriNetUnfolder]: For 935/939 co-relation queries the response was YES. [2022-11-20 11:54:17,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2250 conditions, 1295 events. 96/1295 cut-off events. For 935/939 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6930 event pairs, 16 based on Foata normal form. 34/1253 useless extension candidates. Maximal degree in co-relation 2205. Up to 75 conditions per place. [2022-11-20 11:54:17,082 INFO L137 encePairwiseOnDemand]: 274/280 looper letters, 12 selfloop transitions, 6 changer transitions 0/319 dead transitions. [2022-11-20 11:54:17,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 319 transitions, 1705 flow [2022-11-20 11:54:17,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:54:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 11:54:17,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 783 transitions. [2022-11-20 11:54:17,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9321428571428572 [2022-11-20 11:54:17,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 783 transitions. [2022-11-20 11:54:17,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 783 transitions. [2022-11-20 11:54:17,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:17,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 783 transitions. [2022-11-20 11:54:17,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 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) [2022-11-20 11:54:17,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 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) [2022-11-20 11:54:17,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 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) [2022-11-20 11:54:17,088 INFO L175 Difference]: Start difference. First operand has 370 places, 317 transitions, 1662 flow. Second operand 3 states and 783 transitions. [2022-11-20 11:54:17,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 319 transitions, 1705 flow [2022-11-20 11:54:17,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 319 transitions, 1582 flow, removed 0 selfloop flow, removed 26 redundant places. [2022-11-20 11:54:17,103 INFO L231 Difference]: Finished difference. Result has 346 places, 317 transitions, 1551 flow [2022-11-20 11:54:17,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1551, PETRI_PLACES=346, PETRI_TRANSITIONS=317} [2022-11-20 11:54:17,105 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 86 predicate places. [2022-11-20 11:54:17,106 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 317 transitions, 1551 flow [2022-11-20 11:54:17,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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) [2022-11-20 11:54:17,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:17,107 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:17,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:54:17,107 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:54:17,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:17,108 INFO L85 PathProgramCache]: Analyzing trace with hash -768853504, now seen corresponding path program 1 times [2022-11-20 11:54:17,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:17,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504836111] [2022-11-20 11:54:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:17,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:20,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:20,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504836111] [2022-11-20 11:54:20,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504836111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:20,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:20,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2022-11-20 11:54:20,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251209864] [2022-11-20 11:54:20,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:20,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 11:54:20,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 11:54:20,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:54:20,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 280 [2022-11-20 11:54:20,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 317 transitions, 1551 flow. Second operand has 30 states, 30 states have (on average 167.86666666666667) internal successors, (5036), 30 states have internal predecessors, (5036), 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) [2022-11-20 11:54:20,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:20,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 280 [2022-11-20 11:54:20,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:23,781 INFO L130 PetriNetUnfolder]: 632/3100 cut-off events. [2022-11-20 11:54:23,782 INFO L131 PetriNetUnfolder]: For 2042/2050 co-relation queries the response was YES. [2022-11-20 11:54:23,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6464 conditions, 3100 events. 632/3100 cut-off events. For 2042/2050 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 21259 event pairs, 67 based on Foata normal form. 0/2964 useless extension candidates. Maximal degree in co-relation 6419. Up to 433 conditions per place. [2022-11-20 11:54:23,805 INFO L137 encePairwiseOnDemand]: 244/280 looper letters, 178 selfloop transitions, 81 changer transitions 0/410 dead transitions. [2022-11-20 11:54:23,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 410 transitions, 2382 flow [2022-11-20 11:54:23,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 11:54:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-20 11:54:23,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5648 transitions. [2022-11-20 11:54:23,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6112554112554113 [2022-11-20 11:54:23,813 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5648 transitions. [2022-11-20 11:54:23,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5648 transitions. [2022-11-20 11:54:23,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:23,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5648 transitions. [2022-11-20 11:54:23,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 171.15151515151516) internal successors, (5648), 33 states have internal predecessors, (5648), 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) [2022-11-20 11:54:23,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 280.0) internal successors, (9520), 34 states have internal predecessors, (9520), 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) [2022-11-20 11:54:23,836 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 280.0) internal successors, (9520), 34 states have internal predecessors, (9520), 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) [2022-11-20 11:54:23,836 INFO L175 Difference]: Start difference. First operand has 346 places, 317 transitions, 1551 flow. Second operand 33 states and 5648 transitions. [2022-11-20 11:54:23,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 410 transitions, 2382 flow [2022-11-20 11:54:23,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 410 transitions, 2376 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:54:23,858 INFO L231 Difference]: Finished difference. Result has 384 places, 340 transitions, 1909 flow [2022-11-20 11:54:23,859 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1909, PETRI_PLACES=384, PETRI_TRANSITIONS=340} [2022-11-20 11:54:23,859 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 124 predicate places. [2022-11-20 11:54:23,860 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 340 transitions, 1909 flow [2022-11-20 11:54:23,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 167.86666666666667) internal successors, (5036), 30 states have internal predecessors, (5036), 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) [2022-11-20 11:54:23,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:23,861 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:23,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:54:23,862 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:54:23,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1528911942, now seen corresponding path program 2 times [2022-11-20 11:54:23,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:23,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230726764] [2022-11-20 11:54:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:23,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:28,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:28,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230726764] [2022-11-20 11:54:28,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230726764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:28,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:28,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-11-20 11:54:28,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531966636] [2022-11-20 11:54:28,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:28,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 11:54:28,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:28,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 11:54:28,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 11:54:28,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 280 [2022-11-20 11:54:28,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 340 transitions, 1909 flow. Second operand has 37 states, 37 states have (on average 155.51351351351352) internal successors, (5754), 37 states have internal predecessors, (5754), 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) [2022-11-20 11:54:28,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:28,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 280 [2022-11-20 11:54:28,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:34,863 INFO L130 PetriNetUnfolder]: 834/3937 cut-off events. [2022-11-20 11:54:34,863 INFO L131 PetriNetUnfolder]: For 3207/3222 co-relation queries the response was YES. [2022-11-20 11:54:34,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8576 conditions, 3937 events. 834/3937 cut-off events. For 3207/3222 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 28732 event pairs, 95 based on Foata normal form. 0/3784 useless extension candidates. Maximal degree in co-relation 8523. Up to 431 conditions per place. [2022-11-20 11:54:34,887 INFO L137 encePairwiseOnDemand]: 238/280 looper letters, 223 selfloop transitions, 98 changer transitions 0/463 dead transitions. [2022-11-20 11:54:34,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 463 transitions, 2930 flow [2022-11-20 11:54:34,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 11:54:34,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-20 11:54:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6824 transitions. [2022-11-20 11:54:34,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5667774086378737 [2022-11-20 11:54:34,897 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6824 transitions. [2022-11-20 11:54:34,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6824 transitions. [2022-11-20 11:54:34,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:34,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6824 transitions. [2022-11-20 11:54:34,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 158.69767441860466) internal successors, (6824), 43 states have internal predecessors, (6824), 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) [2022-11-20 11:54:34,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 280.0) internal successors, (12320), 44 states have internal predecessors, (12320), 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) [2022-11-20 11:54:34,924 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 280.0) internal successors, (12320), 44 states have internal predecessors, (12320), 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) [2022-11-20 11:54:34,925 INFO L175 Difference]: Start difference. First operand has 384 places, 340 transitions, 1909 flow. Second operand 43 states and 6824 transitions. [2022-11-20 11:54:34,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 463 transitions, 2930 flow [2022-11-20 11:54:34,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 463 transitions, 2801 flow, removed 12 selfloop flow, removed 20 redundant places. [2022-11-20 11:54:34,953 INFO L231 Difference]: Finished difference. Result has 415 places, 365 transitions, 2147 flow [2022-11-20 11:54:34,954 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=2147, PETRI_PLACES=415, PETRI_TRANSITIONS=365} [2022-11-20 11:54:34,954 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 155 predicate places. [2022-11-20 11:54:34,954 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 365 transitions, 2147 flow [2022-11-20 11:54:34,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 155.51351351351352) internal successors, (5754), 37 states have internal predecessors, (5754), 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) [2022-11-20 11:54:34,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:34,956 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:34,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:54:34,956 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:54:34,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:34,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1622015127, now seen corresponding path program 1 times [2022-11-20 11:54:34,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:34,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665585499] [2022-11-20 11:54:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:34,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:34,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:37,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:37,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665585499] [2022-11-20 11:54:37,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665585499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:37,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:37,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-20 11:54:37,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467743825] [2022-11-20 11:54:37,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:37,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:54:37,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:37,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:54:37,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:54:37,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 280 [2022-11-20 11:54:37,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 365 transitions, 2147 flow. Second operand has 31 states, 31 states have (on average 167.80645161290323) internal successors, (5202), 31 states have internal predecessors, (5202), 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) [2022-11-20 11:54:37,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:37,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 280 [2022-11-20 11:54:37,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:41,703 INFO L130 PetriNetUnfolder]: 804/3902 cut-off events. [2022-11-20 11:54:41,703 INFO L131 PetriNetUnfolder]: For 4038/4055 co-relation queries the response was YES. [2022-11-20 11:54:41,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9085 conditions, 3902 events. 804/3902 cut-off events. For 4038/4055 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 28377 event pairs, 98 based on Foata normal form. 5/3768 useless extension candidates. Maximal degree in co-relation 9023. Up to 780 conditions per place. [2022-11-20 11:54:41,732 INFO L137 encePairwiseOnDemand]: 242/280 looper letters, 189 selfloop transitions, 90 changer transitions 0/434 dead transitions. [2022-11-20 11:54:41,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 434 transitions, 2949 flow [2022-11-20 11:54:41,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:54:41,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-20 11:54:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 5308 transitions. [2022-11-20 11:54:41,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6115207373271889 [2022-11-20 11:54:41,739 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 5308 transitions. [2022-11-20 11:54:41,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 5308 transitions. [2022-11-20 11:54:41,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:41,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 5308 transitions. [2022-11-20 11:54:41,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 171.2258064516129) internal successors, (5308), 31 states have internal predecessors, (5308), 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) [2022-11-20 11:54:41,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 280.0) internal successors, (8960), 32 states have internal predecessors, (8960), 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) [2022-11-20 11:54:41,760 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 280.0) internal successors, (8960), 32 states have internal predecessors, (8960), 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) [2022-11-20 11:54:41,760 INFO L175 Difference]: Start difference. First operand has 415 places, 365 transitions, 2147 flow. Second operand 31 states and 5308 transitions. [2022-11-20 11:54:41,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 434 transitions, 2949 flow [2022-11-20 11:54:41,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 434 transitions, 2796 flow, removed 4 selfloop flow, removed 27 redundant places. [2022-11-20 11:54:41,801 INFO L231 Difference]: Finished difference. Result has 422 places, 372 transitions, 2281 flow [2022-11-20 11:54:41,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2281, PETRI_PLACES=422, PETRI_TRANSITIONS=372} [2022-11-20 11:54:41,803 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 162 predicate places. [2022-11-20 11:54:41,803 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 372 transitions, 2281 flow [2022-11-20 11:54:41,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 167.80645161290323) internal successors, (5202), 31 states have internal predecessors, (5202), 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) [2022-11-20 11:54:41,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:41,804 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:41,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:54:41,804 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:54:41,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:41,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1608608807, now seen corresponding path program 2 times [2022-11-20 11:54:41,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:41,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819126066] [2022-11-20 11:54:41,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:41,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:54:48,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:48,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819126066] [2022-11-20 11:54:48,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819126066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:54:48,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:54:48,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-20 11:54:48,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093383735] [2022-11-20 11:54:48,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:54:48,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:54:48,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:54:48,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=811, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:54:48,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 280 [2022-11-20 11:54:48,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 372 transitions, 2281 flow. Second operand has 31 states, 31 states have (on average 167.80645161290323) internal successors, (5202), 31 states have internal predecessors, (5202), 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) [2022-11-20 11:54:48,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:54:48,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 280 [2022-11-20 11:54:48,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:54:53,896 INFO L130 PetriNetUnfolder]: 620/3085 cut-off events. [2022-11-20 11:54:53,897 INFO L131 PetriNetUnfolder]: For 4629/4644 co-relation queries the response was YES. [2022-11-20 11:54:53,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7693 conditions, 3085 events. 620/3085 cut-off events. For 4629/4644 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 20824 event pairs, 87 based on Foata normal form. 6/2977 useless extension candidates. Maximal degree in co-relation 7627. Up to 479 conditions per place. [2022-11-20 11:54:53,921 INFO L137 encePairwiseOnDemand]: 245/280 looper letters, 164 selfloop transitions, 89 changer transitions 0/406 dead transitions. [2022-11-20 11:54:53,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 406 transitions, 2829 flow [2022-11-20 11:54:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 11:54:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-20 11:54:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 5455 transitions. [2022-11-20 11:54:53,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6088169642857143 [2022-11-20 11:54:53,928 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 5455 transitions. [2022-11-20 11:54:53,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 5455 transitions. [2022-11-20 11:54:53,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:54:53,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 5455 transitions. [2022-11-20 11:54:53,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 170.46875) internal successors, (5455), 32 states have internal predecessors, (5455), 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) [2022-11-20 11:54:53,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 280.0) internal successors, (9240), 33 states have internal predecessors, (9240), 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) [2022-11-20 11:54:53,949 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 280.0) internal successors, (9240), 33 states have internal predecessors, (9240), 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) [2022-11-20 11:54:53,949 INFO L175 Difference]: Start difference. First operand has 422 places, 372 transitions, 2281 flow. Second operand 32 states and 5455 transitions. [2022-11-20 11:54:53,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 406 transitions, 2829 flow [2022-11-20 11:54:53,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 406 transitions, 2651 flow, removed 13 selfloop flow, removed 31 redundant places. [2022-11-20 11:54:53,993 INFO L231 Difference]: Finished difference. Result has 418 places, 359 transitions, 2220 flow [2022-11-20 11:54:53,993 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2220, PETRI_PLACES=418, PETRI_TRANSITIONS=359} [2022-11-20 11:54:53,994 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 158 predicate places. [2022-11-20 11:54:53,994 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 359 transitions, 2220 flow [2022-11-20 11:54:53,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 167.80645161290323) internal successors, (5202), 31 states have internal predecessors, (5202), 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) [2022-11-20 11:54:53,996 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:54:53,996 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:53,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:54:53,996 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 11:54:53,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:53,997 INFO L85 PathProgramCache]: Analyzing trace with hash 476380394, now seen corresponding path program 1 times [2022-11-20 11:54:53,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:53,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794060287] [2022-11-20 11:54:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:53,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:56:07,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:07,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794060287] [2022-11-20 11:56:07,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794060287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:56:07,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:56:07,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [] total 48 [2022-11-20 11:56:07,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637084572] [2022-11-20 11:56:07,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:56:07,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-20 11:56:07,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:07,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-20 11:56:07,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2096, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 11:56:07,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 280 [2022-11-20 11:56:07,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 359 transitions, 2220 flow. Second operand has 48 states, 48 states have (on average 139.375) internal successors, (6690), 48 states have internal predecessors, (6690), 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) [2022-11-20 11:56:07,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:56:07,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 280 [2022-11-20 11:56:07,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:57:30,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:57:35,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:57:45,784 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 132 DAG size of output: 78 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:57:52,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 11:58:22,590 WARN L233 SmtUtils]: Spent 20.33s on a formula simplification. DAG size of input: 141 DAG size of output: 138 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:58:44,713 WARN L233 SmtUtils]: Spent 20.06s on a formula simplification. DAG size of input: 136 DAG size of output: 133 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:59:16,034 WARN L233 SmtUtils]: Spent 22.07s on a formula simplification. DAG size of input: 154 DAG size of output: 151 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:59:43,204 WARN L233 SmtUtils]: Spent 20.38s on a formula simplification. DAG size of input: 149 DAG size of output: 146 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:00:10,670 WARN L233 SmtUtils]: Spent 23.29s on a formula simplification. DAG size of input: 160 DAG size of output: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:00:40,868 WARN L233 SmtUtils]: Spent 23.16s on a formula simplification. DAG size of input: 163 DAG size of output: 160 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:01:05,694 WARN L233 SmtUtils]: Spent 21.07s on a formula simplification. DAG size of input: 155 DAG size of output: 152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:01:34,035 WARN L233 SmtUtils]: Spent 22.19s on a formula simplification. DAG size of input: 166 DAG size of output: 163 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:01:59,861 WARN L233 SmtUtils]: Spent 20.32s on a formula simplification. DAG size of input: 158 DAG size of output: 155 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:02:23,599 WARN L233 SmtUtils]: Spent 19.99s on a formula simplification. DAG size of input: 160 DAG size of output: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:02:50,256 WARN L233 SmtUtils]: Spent 22.49s on a formula simplification. DAG size of input: 161 DAG size of output: 158 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:03:11,846 WARN L233 SmtUtils]: Spent 19.31s on a formula simplification. DAG size of input: 157 DAG size of output: 154 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:03:33,363 WARN L233 SmtUtils]: Spent 19.20s on a formula simplification. DAG size of input: 155 DAG size of output: 152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:04:01,744 WARN L233 SmtUtils]: Spent 19.30s on a formula simplification. DAG size of input: 152 DAG size of output: 149 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:04:04,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:04:09,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:04:12,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-20 12:04:32,023 INFO L130 PetriNetUnfolder]: 7255/17779 cut-off events. [2022-11-20 12:04:32,023 INFO L131 PetriNetUnfolder]: For 22565/22569 co-relation queries the response was YES. [2022-11-20 12:04:32,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43060 conditions, 17779 events. 7255/17779 cut-off events. For 22565/22569 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 149051 event pairs, 3127 based on Foata normal form. 2/16523 useless extension candidates. Maximal degree in co-relation 42997. Up to 7171 conditions per place. [2022-11-20 12:04:32,175 INFO L137 encePairwiseOnDemand]: 224/280 looper letters, 575 selfloop transitions, 172 changer transitions 57/934 dead transitions. [2022-11-20 12:04:32,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 934 transitions, 5772 flow [2022-11-20 12:04:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-20 12:04:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2022-11-20 12:04:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 10591 transitions. [2022-11-20 12:04:32,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5253472222222222 [2022-11-20 12:04:32,190 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 10591 transitions. [2022-11-20 12:04:32,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 10591 transitions. [2022-11-20 12:04:32,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:32,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 10591 transitions. [2022-11-20 12:04:32,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 147.09722222222223) internal successors, (10591), 72 states have internal predecessors, (10591), 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) [2022-11-20 12:04:32,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 280.0) internal successors, (20440), 73 states have internal predecessors, (20440), 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) [2022-11-20 12:04:32,232 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 280.0) internal successors, (20440), 73 states have internal predecessors, (20440), 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) [2022-11-20 12:04:32,232 INFO L175 Difference]: Start difference. First operand has 418 places, 359 transitions, 2220 flow. Second operand 72 states and 10591 transitions. [2022-11-20 12:04:32,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 934 transitions, 5772 flow [2022-11-20 12:04:32,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 934 transitions, 5564 flow, removed 6 selfloop flow, removed 29 redundant places. [2022-11-20 12:04:32,457 INFO L231 Difference]: Finished difference. Result has 510 places, 488 transitions, 3556 flow [2022-11-20 12:04:32,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=3556, PETRI_PLACES=510, PETRI_TRANSITIONS=488} [2022-11-20 12:04:32,458 INFO L288 CegarLoopForPetriNet]: 260 programPoint places, 250 predicate places. [2022-11-20 12:04:32,458 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 488 transitions, 3556 flow [2022-11-20 12:04:32,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 139.375) internal successors, (6690), 48 states have internal predecessors, (6690), 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) [2022-11-20 12:04:32,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:32,459 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:04:32,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:04:32,459 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-20 12:04:32,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:32,460 INFO L85 PathProgramCache]: Analyzing trace with hash -447960364, now seen corresponding path program 2 times [2022-11-20 12:04:32,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:32,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988197795] [2022-11-20 12:04:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:32,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat