./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a --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 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- 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-b5237d8 [2022-11-21 16:58:17,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:58:17,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:58:17,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:58:17,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:58:17,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:58:17,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:58:17,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:58:17,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:58:17,445 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:58:17,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:58:17,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:58:17,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:58:17,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:58:17,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:58:17,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:58:17,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:58:17,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:58:17,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:58:17,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:58:17,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:58:17,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:58:17,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:58:17,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:58:17,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:58:17,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:58:17,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:58:17,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:58:17,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:58:17,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:58:17,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:58:17,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:58:17,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:58:17,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:58:17,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:58:17,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:58:17,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:58:17,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:58:17,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:58:17,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:58:17,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:58:17,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:58:17,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:58:17,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:58:17,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:58:17,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:58:17,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:58:17,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:58:17,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:58:17,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:58:17,525 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:58:17,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:58:17,526 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:58:17,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:58:17,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:58:17,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:58:17,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:58:17,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:58:17,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:58:17,528 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:58:17,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:58:17,529 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:58:17,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:58:17,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:58:17,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:58:17,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:58:17,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:58:17,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:58:17,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:58:17,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:58:17,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:58:17,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:58:17,532 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:58:17,532 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:58:17,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:58:17,533 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_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2022-11-21 16:58:17,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:58:17,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:58:17,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:58:17,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:58:17,992 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:58:17,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-21 16:58:21,286 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:58:21,633 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:58:21,634 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-21 16:58:21,648 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/data/f2dbad57b/81c0230361144371875b3e207b099580/FLAGd919ad0b3 [2022-11-21 16:58:21,666 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/data/f2dbad57b/81c0230361144371875b3e207b099580 [2022-11-21 16:58:21,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:58:21,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:58:21,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:58:21,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:58:21,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:58:21,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:58:21" (1/1) ... [2022-11-21 16:58:21,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2071fa58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:21, skipping insertion in model container [2022-11-21 16:58:21,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:58:21" (1/1) ... [2022-11-21 16:58:21,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:58:21,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:58:22,118 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_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-21 16:58:22,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:58:22,156 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:58:22,282 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_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-21 16:58:22,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:58:22,314 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:58:22,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22 WrapperNode [2022-11-21 16:58:22,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:58:22,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:58:22,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:58:22,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:58:22,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22" (1/1) ... [2022-11-21 16:58:22,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22" (1/1) ... [2022-11-21 16:58:22,434 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 574 [2022-11-21 16:58:22,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:58:22,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:58:22,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:58:22,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:58:22,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22" (1/1) ... [2022-11-21 16:58:22,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22" (1/1) ... [2022-11-21 16:58:22,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22" (1/1) ... [2022-11-21 16:58:22,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22" (1/1) ... [2022-11-21 16:58:22,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22" (1/1) ... [2022-11-21 16:58:22,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22" (1/1) ... [2022-11-21 16:58:22,481 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22" (1/1) ... [2022-11-21 16:58:22,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22" (1/1) ... [2022-11-21 16:58:22,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:58:22,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:58:22,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:58:22,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:58:22,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22" (1/1) ... [2022-11-21 16:58:22,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:58:22,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:58:22,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:58:22,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:58:22,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:58:22,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:58:22,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:58:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:58:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:58:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:58:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:58:22,626 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:58:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:58:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:58:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:58:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:58:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:58:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:58:22,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:58:22,630 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:58:22,838 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:58:22,841 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:58:23,843 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:58:23,866 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:58:23,866 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-21 16:58:23,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:58:23 BoogieIcfgContainer [2022-11-21 16:58:23,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:58:23,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:58:23,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:58:23,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:58:23,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:58:21" (1/3) ... [2022-11-21 16:58:23,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57114f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:58:23, skipping insertion in model container [2022-11-21 16:58:23,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:58:22" (2/3) ... [2022-11-21 16:58:23,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57114f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:58:23, skipping insertion in model container [2022-11-21 16:58:23,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:58:23" (3/3) ... [2022-11-21 16:58:23,884 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-11-21 16:58:23,893 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:58:23,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:58:23,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:58:23,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:58:24,184 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:58:24,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 761 transitions, 1546 flow [2022-11-21 16:58:24,782 INFO L130 PetriNetUnfolder]: 73/758 cut-off events. [2022-11-21 16:58:24,782 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 16:58:24,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 758 events. 73/758 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2695 event pairs, 0 based on Foata normal form. 0/684 useless extension candidates. Maximal degree in co-relation 559. Up to 2 conditions per place. [2022-11-21 16:58:24,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 698 places, 761 transitions, 1546 flow [2022-11-21 16:58:24,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 684 places, 747 transitions, 1512 flow [2022-11-21 16:58:24,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:58:24,850 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;@d60bcb1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:58:24,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 16:58:25,151 INFO L130 PetriNetUnfolder]: 73/746 cut-off events. [2022-11-21 16:58:25,152 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 16:58:25,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:25,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:25,155 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 1 more)] === [2022-11-21 16:58:25,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:25,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1540408722, now seen corresponding path program 1 times [2022-11-21 16:58:25,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:25,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654094206] [2022-11-21 16:58:25,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:25,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:25,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:25,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:25,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654094206] [2022-11-21 16:58:25,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654094206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:25,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:25,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:58:25,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729083624] [2022-11-21 16:58:25,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:25,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:58:25,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:25,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:58:25,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:58:25,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 717 out of 761 [2022-11-21 16:58:25,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 747 transitions, 1512 flow. Second operand has 2 states, 2 states have (on average 721.5) internal successors, (1443), 2 states have internal predecessors, (1443), 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) [2022-11-21 16:58:25,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:25,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 717 of 761 [2022-11-21 16:58:25,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:26,139 INFO L130 PetriNetUnfolder]: 36/710 cut-off events. [2022-11-21 16:58:26,139 INFO L131 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-11-21 16:58:26,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 710 events. 36/710 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2657 event pairs, 0 based on Foata normal form. 60/703 useless extension candidates. Maximal degree in co-relation 534. Up to 7 conditions per place. [2022-11-21 16:58:26,162 INFO L137 encePairwiseOnDemand]: 724/761 looper letters, 6 selfloop transitions, 0 changer transitions 7/710 dead transitions. [2022-11-21 16:58:26,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 710 transitions, 1450 flow [2022-11-21 16:58:26,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:58:26,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:58:26,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1477 transitions. [2022-11-21 16:58:26,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9704336399474376 [2022-11-21 16:58:26,193 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1477 transitions. [2022-11-21 16:58:26,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1477 transitions. [2022-11-21 16:58:26,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:26,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1477 transitions. [2022-11-21 16:58:26,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 738.5) internal successors, (1477), 2 states have internal predecessors, (1477), 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) [2022-11-21 16:58:26,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 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) [2022-11-21 16:58:26,230 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 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) [2022-11-21 16:58:26,232 INFO L175 Difference]: Start difference. First operand has 684 places, 747 transitions, 1512 flow. Second operand 2 states and 1477 transitions. [2022-11-21 16:58:26,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 710 transitions, 1450 flow [2022-11-21 16:58:26,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 710 transitions, 1438 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:58:26,266 INFO L231 Difference]: Finished difference. Result has 679 places, 703 transitions, 1412 flow [2022-11-21 16:58:26,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1412, PETRI_PLACES=679, PETRI_TRANSITIONS=703} [2022-11-21 16:58:26,274 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -5 predicate places. [2022-11-21 16:58:26,274 INFO L495 AbstractCegarLoop]: Abstraction has has 679 places, 703 transitions, 1412 flow [2022-11-21 16:58:26,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 721.5) internal successors, (1443), 2 states have internal predecessors, (1443), 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) [2022-11-21 16:58:26,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:26,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:26,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:58:26,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:26,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 10790097, now seen corresponding path program 1 times [2022-11-21 16:58:26,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:26,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4946446] [2022-11-21 16:58:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:26,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:26,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:26,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4946446] [2022-11-21 16:58:26,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4946446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:26,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:26,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:58:26,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140341129] [2022-11-21 16:58:26,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:26,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:58:26,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:26,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:58:26,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:58:26,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-21 16:58:26,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 703 transitions, 1412 flow. Second operand has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 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) [2022-11-21 16:58:26,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:26,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-21 16:58:26,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:28,097 INFO L130 PetriNetUnfolder]: 274/3060 cut-off events. [2022-11-21 16:58:28,097 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-21 16:58:28,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 3060 events. 274/3060 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 28303 event pairs, 96 based on Foata normal form. 0/2750 useless extension candidates. Maximal degree in co-relation 3377. Up to 185 conditions per place. [2022-11-21 16:58:28,211 INFO L137 encePairwiseOnDemand]: 757/761 looper letters, 33 selfloop transitions, 2 changer transitions 0/718 dead transitions. [2022-11-21 16:58:28,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 718 transitions, 1517 flow [2022-11-21 16:58:28,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:58:28,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:58:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-21 16:58:28,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-21 16:58:28,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-21 16:58:28,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-21 16:58:28,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:28,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-21 16:58:28,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 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) [2022-11-21 16:58:28,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:28,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:28,233 INFO L175 Difference]: Start difference. First operand has 679 places, 703 transitions, 1412 flow. Second operand 3 states and 2146 transitions. [2022-11-21 16:58:28,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 718 transitions, 1517 flow [2022-11-21 16:58:28,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 718 transitions, 1517 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:58:28,248 INFO L231 Difference]: Finished difference. Result has 676 places, 705 transitions, 1432 flow [2022-11-21 16:58:28,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1432, PETRI_PLACES=676, PETRI_TRANSITIONS=705} [2022-11-21 16:58:28,250 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -8 predicate places. [2022-11-21 16:58:28,250 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 705 transitions, 1432 flow [2022-11-21 16:58:28,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 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) [2022-11-21 16:58:28,252 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:28,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:28,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:58:28,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:28,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:28,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1112876859, now seen corresponding path program 2 times [2022-11-21 16:58:28,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:28,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244646323] [2022-11-21 16:58:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:28,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:28,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:28,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244646323] [2022-11-21 16:58:28,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244646323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:28,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:28,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:58:28,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368832888] [2022-11-21 16:58:28,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:28,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:58:28,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:28,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:58:28,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:58:28,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-21 16:58:28,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 705 transitions, 1432 flow. Second operand has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 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) [2022-11-21 16:58:28,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:28,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-21 16:58:28,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:29,783 INFO L130 PetriNetUnfolder]: 288/3350 cut-off events. [2022-11-21 16:58:29,783 INFO L131 PetriNetUnfolder]: For 112/121 co-relation queries the response was YES. [2022-11-21 16:58:29,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3757 conditions, 3350 events. 288/3350 cut-off events. For 112/121 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 30977 event pairs, 98 based on Foata normal form. 6/3065 useless extension candidates. Maximal degree in co-relation 3752. Up to 201 conditions per place. [2022-11-21 16:58:29,856 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 33 selfloop transitions, 4 changer transitions 0/720 dead transitions. [2022-11-21 16:58:29,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 720 transitions, 1545 flow [2022-11-21 16:58:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:58:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:58:29,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-21 16:58:29,861 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-21 16:58:29,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-21 16:58:29,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-21 16:58:29,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:29,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-21 16:58:29,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 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) [2022-11-21 16:58:29,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:29,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:29,876 INFO L175 Difference]: Start difference. First operand has 676 places, 705 transitions, 1432 flow. Second operand 3 states and 2146 transitions. [2022-11-21 16:58:29,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 720 transitions, 1545 flow [2022-11-21 16:58:29,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 720 transitions, 1543 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:58:29,890 INFO L231 Difference]: Finished difference. Result has 679 places, 707 transitions, 1462 flow [2022-11-21 16:58:29,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1462, PETRI_PLACES=679, PETRI_TRANSITIONS=707} [2022-11-21 16:58:29,892 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -5 predicate places. [2022-11-21 16:58:29,892 INFO L495 AbstractCegarLoop]: Abstraction has has 679 places, 707 transitions, 1462 flow [2022-11-21 16:58:29,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 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) [2022-11-21 16:58:29,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:29,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:29,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:58:29,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:29,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1716266549, now seen corresponding path program 1 times [2022-11-21 16:58:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:29,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927222745] [2022-11-21 16:58:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:29,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:30,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:30,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927222745] [2022-11-21 16:58:30,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927222745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:30,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:30,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:58:30,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536390136] [2022-11-21 16:58:30,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:30,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:58:30,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:30,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:58:30,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:58:30,038 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-21 16:58:30,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 707 transitions, 1462 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-21 16:58:30,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:30,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-21 16:58:30,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:31,779 INFO L130 PetriNetUnfolder]: 575/5502 cut-off events. [2022-11-21 16:58:31,780 INFO L131 PetriNetUnfolder]: For 420/496 co-relation queries the response was YES. [2022-11-21 16:58:31,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6216 conditions, 5502 events. 575/5502 cut-off events. For 420/496 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 57324 event pairs, 210 based on Foata normal form. 4/4914 useless extension candidates. Maximal degree in co-relation 6210. Up to 401 conditions per place. [2022-11-21 16:58:31,891 INFO L137 encePairwiseOnDemand]: 757/761 looper letters, 34 selfloop transitions, 3 changer transitions 0/722 dead transitions. [2022-11-21 16:58:31,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 722 transitions, 1580 flow [2022-11-21 16:58:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:58:31,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:58:31,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2145 transitions. [2022-11-21 16:58:31,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9395532194480947 [2022-11-21 16:58:31,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2145 transitions. [2022-11-21 16:58:31,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2145 transitions. [2022-11-21 16:58:31,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:31,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2145 transitions. [2022-11-21 16:58:31,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.0) internal successors, (2145), 3 states have internal predecessors, (2145), 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) [2022-11-21 16:58:31,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:31,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:31,923 INFO L175 Difference]: Start difference. First operand has 679 places, 707 transitions, 1462 flow. Second operand 3 states and 2145 transitions. [2022-11-21 16:58:31,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 722 transitions, 1580 flow [2022-11-21 16:58:31,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 722 transitions, 1564 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-21 16:58:31,948 INFO L231 Difference]: Finished difference. Result has 681 places, 710 transitions, 1486 flow [2022-11-21 16:58:31,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=704, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1486, PETRI_PLACES=681, PETRI_TRANSITIONS=710} [2022-11-21 16:58:31,952 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -3 predicate places. [2022-11-21 16:58:31,959 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 710 transitions, 1486 flow [2022-11-21 16:58:31,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-21 16:58:31,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:31,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:31,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:58:31,962 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:31,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash 195838855, now seen corresponding path program 1 times [2022-11-21 16:58:31,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:31,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632362504] [2022-11-21 16:58:31,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:31,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:32,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:32,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632362504] [2022-11-21 16:58:32,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632362504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:32,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:32,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:58:32,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815717638] [2022-11-21 16:58:32,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:32,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:58:32,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:32,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:58:32,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:58:32,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-21 16:58:32,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 710 transitions, 1486 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-21 16:58:32,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:32,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-21 16:58:32,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:33,482 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2345] thread2EXIT-->L160-2: Formula: (and (= v_thread2Thread1of1ForFork0_thidvar2_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem95#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread2Thread1of1ForFork0_thidvar0_4) (= v_thread2Thread1of1ForFork0_thidvar1_4 0)) InVars {ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][524], [701#true, Black: 718#(not (= ~is_null_9~0 (* 256 (div ~is_null_9~0 256)))), Black: 704#true, 722#true, 621#L160-2true, Black: 712#(= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0), 716#true, 415#L123-6true, 706#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0))]) [2022-11-21 16:58:33,482 INFO L383 tUnfolder$Statistics]: this new event has 232 ancestors and is cut-off event [2022-11-21 16:58:33,483 INFO L386 tUnfolder$Statistics]: existing Event has 239 ancestors and is cut-off event [2022-11-21 16:58:33,483 INFO L386 tUnfolder$Statistics]: existing Event has 241 ancestors and is cut-off event [2022-11-21 16:58:33,483 INFO L386 tUnfolder$Statistics]: existing Event has 232 ancestors and is cut-off event [2022-11-21 16:58:33,715 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2346] thread3EXIT-->L161-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem96#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][703], [701#true, Black: 716#true, Black: 706#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)), 527#L161-2true, 718#(not (= ~is_null_9~0 (* 256 (div ~is_null_9~0 256)))), Black: 710#true, 724#(not (= (* 256 (div ~is_null_1~0 256)) ~is_null_1~0))]) [2022-11-21 16:58:33,716 INFO L383 tUnfolder$Statistics]: this new event has 241 ancestors and is not cut-off event [2022-11-21 16:58:33,716 INFO L386 tUnfolder$Statistics]: existing Event has 265 ancestors and is not cut-off event [2022-11-21 16:58:33,716 INFO L386 tUnfolder$Statistics]: existing Event has 243 ancestors and is not cut-off event [2022-11-21 16:58:33,716 INFO L386 tUnfolder$Statistics]: existing Event has 250 ancestors and is not cut-off event [2022-11-21 16:58:33,777 INFO L130 PetriNetUnfolder]: 252/3123 cut-off events. [2022-11-21 16:58:33,777 INFO L131 PetriNetUnfolder]: For 345/408 co-relation queries the response was YES. [2022-11-21 16:58:33,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 3123 events. 252/3123 cut-off events. For 345/408 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 29016 event pairs, 79 based on Foata normal form. 10/2887 useless extension candidates. Maximal degree in co-relation 3650. Up to 195 conditions per place. [2022-11-21 16:58:33,851 INFO L137 encePairwiseOnDemand]: 757/761 looper letters, 36 selfloop transitions, 3 changer transitions 0/726 dead transitions. [2022-11-21 16:58:33,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 726 transitions, 1609 flow [2022-11-21 16:58:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:58:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:58:33,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-21 16:58:33,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-21 16:58:33,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-21 16:58:33,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-21 16:58:33,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:33,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-21 16:58:33,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 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) [2022-11-21 16:58:33,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:33,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:33,874 INFO L175 Difference]: Start difference. First operand has 681 places, 710 transitions, 1486 flow. Second operand 3 states and 2146 transitions. [2022-11-21 16:58:33,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 726 transitions, 1609 flow [2022-11-21 16:58:33,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 726 transitions, 1606 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:58:33,891 INFO L231 Difference]: Finished difference. Result has 684 places, 713 transitions, 1523 flow [2022-11-21 16:58:33,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1523, PETRI_PLACES=684, PETRI_TRANSITIONS=713} [2022-11-21 16:58:33,896 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 0 predicate places. [2022-11-21 16:58:33,896 INFO L495 AbstractCegarLoop]: Abstraction has has 684 places, 713 transitions, 1523 flow [2022-11-21 16:58:33,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-21 16:58:33,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:33,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:33,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:58:33,899 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash 780397969, now seen corresponding path program 2 times [2022-11-21 16:58:33,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:33,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292085367] [2022-11-21 16:58:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:33,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:34,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:34,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292085367] [2022-11-21 16:58:34,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292085367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:34,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:34,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:58:34,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931695913] [2022-11-21 16:58:34,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:34,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:58:34,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:34,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:58:34,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:58:34,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-21 16:58:34,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 713 transitions, 1523 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-21 16:58:34,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:34,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-21 16:58:34,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:35,120 INFO L130 PetriNetUnfolder]: 222/2779 cut-off events. [2022-11-21 16:58:35,120 INFO L131 PetriNetUnfolder]: For 524/584 co-relation queries the response was YES. [2022-11-21 16:58:35,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 2779 events. 222/2779 cut-off events. For 524/584 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 24829 event pairs, 76 based on Foata normal form. 6/2578 useless extension candidates. Maximal degree in co-relation 3399. Up to 187 conditions per place. [2022-11-21 16:58:35,193 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 36 selfloop transitions, 6 changer transitions 0/728 dead transitions. [2022-11-21 16:58:35,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 728 transitions, 1654 flow [2022-11-21 16:58:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:58:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:58:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-21 16:58:35,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-21 16:58:35,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-21 16:58:35,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-21 16:58:35,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:35,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-21 16:58:35,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 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) [2022-11-21 16:58:35,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:35,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:35,213 INFO L175 Difference]: Start difference. First operand has 684 places, 713 transitions, 1523 flow. Second operand 3 states and 2146 transitions. [2022-11-21 16:58:35,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 728 transitions, 1654 flow [2022-11-21 16:58:35,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 728 transitions, 1651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:58:35,228 INFO L231 Difference]: Finished difference. Result has 687 places, 715 transitions, 1572 flow [2022-11-21 16:58:35,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1572, PETRI_PLACES=687, PETRI_TRANSITIONS=715} [2022-11-21 16:58:35,230 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 3 predicate places. [2022-11-21 16:58:35,231 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 715 transitions, 1572 flow [2022-11-21 16:58:35,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-21 16:58:35,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:35,233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:35,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:58:35,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:35,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:35,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1401565433, now seen corresponding path program 2 times [2022-11-21 16:58:35,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:35,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914138199] [2022-11-21 16:58:35,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:35,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:35,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:35,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914138199] [2022-11-21 16:58:35,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914138199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:35,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:35,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:58:35,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210960824] [2022-11-21 16:58:35,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:35,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:58:35,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:35,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:58:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:58:35,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-21 16:58:35,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 715 transitions, 1572 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-21 16:58:35,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:35,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-21 16:58:35,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:37,355 INFO L130 PetriNetUnfolder]: 603/6728 cut-off events. [2022-11-21 16:58:37,355 INFO L131 PetriNetUnfolder]: For 862/973 co-relation queries the response was YES. [2022-11-21 16:58:37,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7729 conditions, 6728 events. 603/6728 cut-off events. For 862/973 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 74469 event pairs, 219 based on Foata normal form. 13/6102 useless extension candidates. Maximal degree in co-relation 7720. Up to 422 conditions per place. [2022-11-21 16:58:37,500 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 34 selfloop transitions, 6 changer transitions 0/727 dead transitions. [2022-11-21 16:58:37,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 727 transitions, 1684 flow [2022-11-21 16:58:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:58:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:58:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2145 transitions. [2022-11-21 16:58:37,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9395532194480947 [2022-11-21 16:58:37,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2145 transitions. [2022-11-21 16:58:37,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2145 transitions. [2022-11-21 16:58:37,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:37,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2145 transitions. [2022-11-21 16:58:37,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.0) internal successors, (2145), 3 states have internal predecessors, (2145), 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) [2022-11-21 16:58:37,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:37,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:37,523 INFO L175 Difference]: Start difference. First operand has 687 places, 715 transitions, 1572 flow. Second operand 3 states and 2145 transitions. [2022-11-21 16:58:37,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 727 transitions, 1684 flow [2022-11-21 16:58:37,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 727 transitions, 1668 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-21 16:58:37,544 INFO L231 Difference]: Finished difference. Result has 689 places, 715 transitions, 1596 flow [2022-11-21 16:58:37,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1596, PETRI_PLACES=689, PETRI_TRANSITIONS=715} [2022-11-21 16:58:37,546 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 5 predicate places. [2022-11-21 16:58:37,547 INFO L495 AbstractCegarLoop]: Abstraction has has 689 places, 715 transitions, 1596 flow [2022-11-21 16:58:37,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 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) [2022-11-21 16:58:37,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:37,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:37,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:58:37,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:37,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:37,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2086372397, now seen corresponding path program 1 times [2022-11-21 16:58:37,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:37,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881706806] [2022-11-21 16:58:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:37,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:58:37,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:37,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881706806] [2022-11-21 16:58:37,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881706806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:37,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:37,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:58:37,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853524274] [2022-11-21 16:58:37,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:37,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:58:37,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:37,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:58:37,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:58:37,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 684 out of 761 [2022-11-21 16:58:37,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 689 places, 715 transitions, 1596 flow. Second operand has 5 states, 5 states have (on average 689.4) internal successors, (3447), 5 states have internal predecessors, (3447), 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) [2022-11-21 16:58:37,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:37,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 684 of 761 [2022-11-21 16:58:37,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:38,506 INFO L130 PetriNetUnfolder]: 36/946 cut-off events. [2022-11-21 16:58:38,506 INFO L131 PetriNetUnfolder]: For 135/170 co-relation queries the response was YES. [2022-11-21 16:58:38,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 946 events. 36/946 cut-off events. For 135/170 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4779 event pairs, 0 based on Foata normal form. 0/882 useless extension candidates. Maximal degree in co-relation 1106. Up to 55 conditions per place. [2022-11-21 16:58:38,539 INFO L137 encePairwiseOnDemand]: 746/761 looper letters, 39 selfloop transitions, 12 changer transitions 0/727 dead transitions. [2022-11-21 16:58:38,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 727 transitions, 1722 flow [2022-11-21 16:58:38,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:58:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:58:38,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3474 transitions. [2022-11-21 16:58:38,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9130091984231274 [2022-11-21 16:58:38,552 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3474 transitions. [2022-11-21 16:58:38,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3474 transitions. [2022-11-21 16:58:38,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:38,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3474 transitions. [2022-11-21 16:58:38,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 694.8) internal successors, (3474), 5 states have internal predecessors, (3474), 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) [2022-11-21 16:58:38,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 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) [2022-11-21 16:58:38,578 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 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) [2022-11-21 16:58:38,579 INFO L175 Difference]: Start difference. First operand has 689 places, 715 transitions, 1596 flow. Second operand 5 states and 3474 transitions. [2022-11-21 16:58:38,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 727 transitions, 1722 flow [2022-11-21 16:58:38,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 727 transitions, 1706 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-21 16:58:38,601 INFO L231 Difference]: Finished difference. Result has 692 places, 718 transitions, 1628 flow [2022-11-21 16:58:38,603 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1628, PETRI_PLACES=692, PETRI_TRANSITIONS=718} [2022-11-21 16:58:38,605 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 8 predicate places. [2022-11-21 16:58:38,606 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 718 transitions, 1628 flow [2022-11-21 16:58:38,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 689.4) internal successors, (3447), 5 states have internal predecessors, (3447), 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) [2022-11-21 16:58:38,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:38,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:38,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:58:38,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:38,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1555615525, now seen corresponding path program 1 times [2022-11-21 16:58:38,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:38,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416990695] [2022-11-21 16:58:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:38,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:58:39,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:39,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416990695] [2022-11-21 16:58:39,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416990695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:58:39,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404478493] [2022-11-21 16:58:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:39,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:58:39,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:58:39,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:58:39,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:58:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:39,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:58:39,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:58:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:58:39,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:58:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:58:39,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404478493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:58:39,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:58:39,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-21 16:58:39,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145614600] [2022-11-21 16:58:39,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:58:39,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 16:58:39,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:39,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 16:58:39,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-21 16:58:39,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 681 out of 761 [2022-11-21 16:58:39,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 718 transitions, 1628 flow. Second operand has 15 states, 15 states have (on average 685.0666666666667) internal successors, (10276), 15 states have internal predecessors, (10276), 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) [2022-11-21 16:58:39,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:39,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 681 of 761 [2022-11-21 16:58:39,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:40,757 INFO L130 PetriNetUnfolder]: 36/970 cut-off events. [2022-11-21 16:58:40,758 INFO L131 PetriNetUnfolder]: For 123/157 co-relation queries the response was YES. [2022-11-21 16:58:40,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 970 events. 36/970 cut-off events. For 123/157 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4773 event pairs, 0 based on Foata normal form. 6/915 useless extension candidates. Maximal degree in co-relation 1170. Up to 46 conditions per place. [2022-11-21 16:58:40,792 INFO L137 encePairwiseOnDemand]: 737/761 looper letters, 42 selfloop transitions, 33 changer transitions 0/748 dead transitions. [2022-11-21 16:58:40,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 702 places, 748 transitions, 1844 flow [2022-11-21 16:58:40,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:58:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:58:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 7572 transitions. [2022-11-21 16:58:40,815 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9045514275474854 [2022-11-21 16:58:40,815 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 7572 transitions. [2022-11-21 16:58:40,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 7572 transitions. [2022-11-21 16:58:40,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:40,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 7572 transitions. [2022-11-21 16:58:40,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 688.3636363636364) internal successors, (7572), 11 states have internal predecessors, (7572), 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) [2022-11-21 16:58:40,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 761.0) internal successors, (9132), 12 states have internal predecessors, (9132), 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) [2022-11-21 16:58:40,868 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 761.0) internal successors, (9132), 12 states have internal predecessors, (9132), 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) [2022-11-21 16:58:40,868 INFO L175 Difference]: Start difference. First operand has 692 places, 718 transitions, 1628 flow. Second operand 11 states and 7572 transitions. [2022-11-21 16:58:40,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 702 places, 748 transitions, 1844 flow [2022-11-21 16:58:40,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 748 transitions, 1826 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:58:40,890 INFO L231 Difference]: Finished difference. Result has 702 places, 736 transitions, 1777 flow [2022-11-21 16:58:40,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1777, PETRI_PLACES=702, PETRI_TRANSITIONS=736} [2022-11-21 16:58:40,893 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 18 predicate places. [2022-11-21 16:58:40,894 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 736 transitions, 1777 flow [2022-11-21 16:58:40,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 685.0666666666667) internal successors, (10276), 15 states have internal predecessors, (10276), 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) [2022-11-21 16:58:40,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:40,899 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:40,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 16:58:41,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:58:41,106 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:41,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:41,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1710211390, now seen corresponding path program 1 times [2022-11-21 16:58:41,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:41,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787052005] [2022-11-21 16:58:41,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:41,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-21 16:58:41,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:41,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787052005] [2022-11-21 16:58:41,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787052005] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:58:41,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172146031] [2022-11-21 16:58:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:41,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:58:41,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:58:41,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:58:41,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:58:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:42,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:58:42,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:58:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-21 16:58:42,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:58:42,466 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-21 16:58:42,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172146031] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:58:42,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:58:42,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-21 16:58:42,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233211029] [2022-11-21 16:58:42,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:58:42,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 16:58:42,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:42,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 16:58:42,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-21 16:58:42,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 681 out of 761 [2022-11-21 16:58:42,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 736 transitions, 1777 flow. Second operand has 22 states, 22 states have (on average 684.6818181818181) internal successors, (15063), 22 states have internal predecessors, (15063), 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) [2022-11-21 16:58:42,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:42,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 681 of 761 [2022-11-21 16:58:42,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:43,363 INFO L130 PetriNetUnfolder]: 36/1006 cut-off events. [2022-11-21 16:58:43,364 INFO L131 PetriNetUnfolder]: For 175/209 co-relation queries the response was YES. [2022-11-21 16:58:43,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 1006 events. 36/1006 cut-off events. For 175/209 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4756 event pairs, 0 based on Foata normal form. 6/951 useless extension candidates. Maximal degree in co-relation 1337. Up to 46 conditions per place. [2022-11-21 16:58:43,401 INFO L137 encePairwiseOnDemand]: 737/761 looper letters, 54 selfloop transitions, 51 changer transitions 0/778 dead transitions. [2022-11-21 16:58:43,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 778 transitions, 2167 flow [2022-11-21 16:58:43,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:58:43,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:58:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 11688 transitions. [2022-11-21 16:58:43,422 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9034552059982994 [2022-11-21 16:58:43,422 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 11688 transitions. [2022-11-21 16:58:43,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 11688 transitions. [2022-11-21 16:58:43,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:43,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 11688 transitions. [2022-11-21 16:58:43,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 687.5294117647059) internal successors, (11688), 17 states have internal predecessors, (11688), 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) [2022-11-21 16:58:43,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 761.0) internal successors, (13698), 18 states have internal predecessors, (13698), 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) [2022-11-21 16:58:43,480 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 761.0) internal successors, (13698), 18 states have internal predecessors, (13698), 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) [2022-11-21 16:58:43,480 INFO L175 Difference]: Start difference. First operand has 702 places, 736 transitions, 1777 flow. Second operand 17 states and 11688 transitions. [2022-11-21 16:58:43,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 778 transitions, 2167 flow [2022-11-21 16:58:43,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 778 transitions, 2130 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-21 16:58:43,496 INFO L231 Difference]: Finished difference. Result has 718 places, 757 transitions, 2015 flow [2022-11-21 16:58:43,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2015, PETRI_PLACES=718, PETRI_TRANSITIONS=757} [2022-11-21 16:58:43,499 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 34 predicate places. [2022-11-21 16:58:43,499 INFO L495 AbstractCegarLoop]: Abstraction has has 718 places, 757 transitions, 2015 flow [2022-11-21 16:58:43,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 684.6818181818181) internal successors, (15063), 22 states have internal predecessors, (15063), 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) [2022-11-21 16:58:43,504 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:43,504 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:43,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:58:43,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f9a9cfe-5c9e-4208-9261-9f5f4804332d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:58:43,712 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:43,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:43,712 INFO L85 PathProgramCache]: Analyzing trace with hash 686667092, now seen corresponding path program 2 times [2022-11-21 16:58:43,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:43,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59101926] [2022-11-21 16:58:43,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:43,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-21 16:58:44,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:44,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59101926] [2022-11-21 16:58:44,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59101926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:44,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:44,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:58:44,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124904306] [2022-11-21 16:58:44,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:44,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:58:44,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:44,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:58:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:58:44,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-21 16:58:44,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 757 transitions, 2015 flow. Second operand has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 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) [2022-11-21 16:58:44,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:44,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-21 16:58:44,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:45,641 INFO L130 PetriNetUnfolder]: 231/3749 cut-off events. [2022-11-21 16:58:45,641 INFO L131 PetriNetUnfolder]: For 501/619 co-relation queries the response was YES. [2022-11-21 16:58:45,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 3749 events. 231/3749 cut-off events. For 501/619 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 33885 event pairs, 44 based on Foata normal form. 2/3428 useless extension candidates. Maximal degree in co-relation 4477. Up to 132 conditions per place. [2022-11-21 16:58:45,765 INFO L137 encePairwiseOnDemand]: 756/761 looper letters, 24 selfloop transitions, 4 changer transitions 0/765 dead transitions. [2022-11-21 16:58:45,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 720 places, 765 transitions, 2091 flow [2022-11-21 16:58:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:58:45,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:58:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2138 transitions. [2022-11-21 16:58:45,772 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9364870784056066 [2022-11-21 16:58:45,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2138 transitions. [2022-11-21 16:58:45,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2138 transitions. [2022-11-21 16:58:45,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:45,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2138 transitions. [2022-11-21 16:58:45,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 712.6666666666666) internal successors, (2138), 3 states have internal predecessors, (2138), 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) [2022-11-21 16:58:45,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:45,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:45,784 INFO L175 Difference]: Start difference. First operand has 718 places, 757 transitions, 2015 flow. Second operand 3 states and 2138 transitions. [2022-11-21 16:58:45,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 720 places, 765 transitions, 2091 flow [2022-11-21 16:58:45,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 765 transitions, 2024 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-21 16:58:45,802 INFO L231 Difference]: Finished difference. Result has 713 places, 758 transitions, 1966 flow [2022-11-21 16:58:45,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1966, PETRI_PLACES=713, PETRI_TRANSITIONS=758} [2022-11-21 16:58:45,804 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 29 predicate places. [2022-11-21 16:58:45,804 INFO L495 AbstractCegarLoop]: Abstraction has has 713 places, 758 transitions, 1966 flow [2022-11-21 16:58:45,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 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) [2022-11-21 16:58:45,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:45,805 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:45,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:58:45,806 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:45,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:45,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2064020475, now seen corresponding path program 2 times [2022-11-21 16:58:45,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:45,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599544027] [2022-11-21 16:58:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:45,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-21 16:58:46,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:46,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599544027] [2022-11-21 16:58:46,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599544027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:46,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:46,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:58:46,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754581494] [2022-11-21 16:58:46,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:46,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:58:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:58:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:58:46,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-21 16:58:46,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 713 places, 758 transitions, 1966 flow. Second operand has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 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) [2022-11-21 16:58:46,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:46,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-21 16:58:46,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:48,160 INFO L130 PetriNetUnfolder]: 318/6374 cut-off events. [2022-11-21 16:58:48,161 INFO L131 PetriNetUnfolder]: For 802/946 co-relation queries the response was YES. [2022-11-21 16:58:48,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7228 conditions, 6374 events. 318/6374 cut-off events. For 802/946 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 64195 event pairs, 22 based on Foata normal form. 2/5827 useless extension candidates. Maximal degree in co-relation 7210. Up to 96 conditions per place. [2022-11-21 16:58:48,301 INFO L137 encePairwiseOnDemand]: 756/761 looper letters, 25 selfloop transitions, 4 changer transitions 0/767 dead transitions. [2022-11-21 16:58:48,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 767 transitions, 2047 flow [2022-11-21 16:58:48,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:58:48,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:58:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2139 transitions. [2022-11-21 16:58:48,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9369250985545335 [2022-11-21 16:58:48,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2139 transitions. [2022-11-21 16:58:48,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2139 transitions. [2022-11-21 16:58:48,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:48,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2139 transitions. [2022-11-21 16:58:48,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 713.0) internal successors, (2139), 3 states have internal predecessors, (2139), 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) [2022-11-21 16:58:48,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:48,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:48,313 INFO L175 Difference]: Start difference. First operand has 713 places, 758 transitions, 1966 flow. Second operand 3 states and 2139 transitions. [2022-11-21 16:58:48,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 767 transitions, 2047 flow [2022-11-21 16:58:48,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 714 places, 767 transitions, 2043 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:58:48,331 INFO L231 Difference]: Finished difference. Result has 715 places, 759 transitions, 1980 flow [2022-11-21 16:58:48,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=712, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1980, PETRI_PLACES=715, PETRI_TRANSITIONS=759} [2022-11-21 16:58:48,333 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 31 predicate places. [2022-11-21 16:58:48,333 INFO L495 AbstractCegarLoop]: Abstraction has has 715 places, 759 transitions, 1980 flow [2022-11-21 16:58:48,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 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) [2022-11-21 16:58:48,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:48,334 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:48,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:58:48,335 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:48,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash -91015375, now seen corresponding path program 1 times [2022-11-21 16:58:48,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:48,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41510131] [2022-11-21 16:58:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:48,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-21 16:58:48,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:48,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41510131] [2022-11-21 16:58:48,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41510131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:48,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:48,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:58:48,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773605557] [2022-11-21 16:58:48,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:48,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:58:48,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:48,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:58:48,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:58:48,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-21 16:58:48,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 759 transitions, 1980 flow. Second operand has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 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) [2022-11-21 16:58:48,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:48,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-21 16:58:48,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:58:49,968 INFO L130 PetriNetUnfolder]: 444/4315 cut-off events. [2022-11-21 16:58:49,968 INFO L131 PetriNetUnfolder]: For 511/599 co-relation queries the response was YES. [2022-11-21 16:58:50,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 4315 events. 444/4315 cut-off events. For 511/599 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 40683 event pairs, 198 based on Foata normal form. 0/3776 useless extension candidates. Maximal degree in co-relation 5216. Up to 487 conditions per place. [2022-11-21 16:58:50,017 INFO L137 encePairwiseOnDemand]: 756/761 looper letters, 23 selfloop transitions, 4 changer transitions 0/766 dead transitions. [2022-11-21 16:58:50,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 766 transitions, 2051 flow [2022-11-21 16:58:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:58:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 16:58:50,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2137 transitions. [2022-11-21 16:58:50,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9360490582566798 [2022-11-21 16:58:50,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2137 transitions. [2022-11-21 16:58:50,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2137 transitions. [2022-11-21 16:58:50,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:58:50,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2137 transitions. [2022-11-21 16:58:50,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 712.3333333333334) internal successors, (2137), 3 states have internal predecessors, (2137), 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) [2022-11-21 16:58:50,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:50,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 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) [2022-11-21 16:58:50,034 INFO L175 Difference]: Start difference. First operand has 715 places, 759 transitions, 1980 flow. Second operand 3 states and 2137 transitions. [2022-11-21 16:58:50,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 766 transitions, 2051 flow [2022-11-21 16:58:50,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 716 places, 766 transitions, 2047 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:58:50,050 INFO L231 Difference]: Finished difference. Result has 717 places, 760 transitions, 1994 flow [2022-11-21 16:58:50,051 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=714, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1994, PETRI_PLACES=717, PETRI_TRANSITIONS=760} [2022-11-21 16:58:50,052 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 33 predicate places. [2022-11-21 16:58:50,052 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 760 transitions, 1994 flow [2022-11-21 16:58:50,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 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) [2022-11-21 16:58:50,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:58:50,053 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:58:50,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:58:50,054 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:58:50,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:58:50,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2119714508, now seen corresponding path program 1 times [2022-11-21 16:58:50,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:58:50,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535573003] [2022-11-21 16:58:50,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:58:50,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:58:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:58:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-21 16:58:50,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:58:50,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535573003] [2022-11-21 16:58:50,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535573003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:58:50,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:58:50,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:58:50,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999495156] [2022-11-21 16:58:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:58:50,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:58:50,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:58:50,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:58:50,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:58:50,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 655 out of 761 [2022-11-21 16:58:50,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 760 transitions, 1994 flow. Second operand has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 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) [2022-11-21 16:58:50,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:58:50,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 655 of 761 [2022-11-21 16:58:50,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:59:02,081 INFO L130 PetriNetUnfolder]: 5961/35371 cut-off events. [2022-11-21 16:59:02,081 INFO L131 PetriNetUnfolder]: For 2137/2250 co-relation queries the response was YES. [2022-11-21 16:59:02,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44997 conditions, 35371 events. 5961/35371 cut-off events. For 2137/2250 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 503183 event pairs, 3852 based on Foata normal form. 8/31265 useless extension candidates. Maximal degree in co-relation 44977. Up to 6389 conditions per place. [2022-11-21 16:59:02,658 INFO L137 encePairwiseOnDemand]: 753/761 looper letters, 102 selfloop transitions, 5 changer transitions 4/810 dead transitions. [2022-11-21 16:59:02,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 810 transitions, 2325 flow [2022-11-21 16:59:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:59:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 16:59:02,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5352 transitions. [2022-11-21 16:59:02,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791064388961892 [2022-11-21 16:59:02,670 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5352 transitions. [2022-11-21 16:59:02,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5352 transitions. [2022-11-21 16:59:02,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:59:02,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5352 transitions. [2022-11-21 16:59:02,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 669.0) internal successors, (5352), 8 states have internal predecessors, (5352), 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) [2022-11-21 16:59:02,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 761.0) internal successors, (6849), 9 states have internal predecessors, (6849), 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) [2022-11-21 16:59:02,689 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 761.0) internal successors, (6849), 9 states have internal predecessors, (6849), 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) [2022-11-21 16:59:02,689 INFO L175 Difference]: Start difference. First operand has 717 places, 760 transitions, 1994 flow. Second operand 8 states and 5352 transitions. [2022-11-21 16:59:02,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 810 transitions, 2325 flow [2022-11-21 16:59:02,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 810 transitions, 2321 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:59:02,717 INFO L231 Difference]: Finished difference. Result has 728 places, 762 transitions, 2019 flow [2022-11-21 16:59:02,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2019, PETRI_PLACES=728, PETRI_TRANSITIONS=762} [2022-11-21 16:59:02,719 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 44 predicate places. [2022-11-21 16:59:02,719 INFO L495 AbstractCegarLoop]: Abstraction has has 728 places, 762 transitions, 2019 flow [2022-11-21 16:59:02,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 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) [2022-11-21 16:59:02,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:59:02,721 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:59:02,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:59:02,721 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:59:02,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:02,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1228615812, now seen corresponding path program 1 times [2022-11-21 16:59:02,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:02,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813998962] [2022-11-21 16:59:02,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:02,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-21 16:59:03,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:03,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813998962] [2022-11-21 16:59:03,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813998962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:59:03,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:59:03,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:59:03,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119403076] [2022-11-21 16:59:03,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:59:03,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:59:03,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:03,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:59:03,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:59:03,415 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 761 [2022-11-21 16:59:03,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 762 transitions, 2019 flow. Second operand has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 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) [2022-11-21 16:59:03,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:59:03,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 761 [2022-11-21 16:59:03,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:59:15,404 INFO L130 PetriNetUnfolder]: 7161/36900 cut-off events. [2022-11-21 16:59:15,405 INFO L131 PetriNetUnfolder]: For 17068/18735 co-relation queries the response was YES. [2022-11-21 16:59:15,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57061 conditions, 36900 events. 7161/36900 cut-off events. For 17068/18735 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 507714 event pairs, 2832 based on Foata normal form. 123/34647 useless extension candidates. Maximal degree in co-relation 57036. Up to 4501 conditions per place. [2022-11-21 16:59:16,182 INFO L137 encePairwiseOnDemand]: 748/761 looper letters, 201 selfloop transitions, 21 changer transitions 2/908 dead transitions. [2022-11-21 16:59:16,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 908 transitions, 3007 flow [2022-11-21 16:59:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:59:16,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:59:16,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4802 transitions. [2022-11-21 16:59:16,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9014454664914586 [2022-11-21 16:59:16,192 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4802 transitions. [2022-11-21 16:59:16,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4802 transitions. [2022-11-21 16:59:16,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:59:16,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4802 transitions. [2022-11-21 16:59:16,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 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) [2022-11-21 16:59:16,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 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) [2022-11-21 16:59:16,206 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 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) [2022-11-21 16:59:16,207 INFO L175 Difference]: Start difference. First operand has 728 places, 762 transitions, 2019 flow. Second operand 7 states and 4802 transitions. [2022-11-21 16:59:16,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 732 places, 908 transitions, 3007 flow [2022-11-21 16:59:16,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 908 transitions, 2998 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-21 16:59:16,293 INFO L231 Difference]: Finished difference. Result has 733 places, 784 transitions, 2277 flow [2022-11-21 16:59:16,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2277, PETRI_PLACES=733, PETRI_TRANSITIONS=784} [2022-11-21 16:59:16,296 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 49 predicate places. [2022-11-21 16:59:16,296 INFO L495 AbstractCegarLoop]: Abstraction has has 733 places, 784 transitions, 2277 flow [2022-11-21 16:59:16,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 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) [2022-11-21 16:59:16,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:59:16,300 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:59:16,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:59:16,301 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:59:16,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:16,302 INFO L85 PathProgramCache]: Analyzing trace with hash -546603780, now seen corresponding path program 2 times [2022-11-21 16:59:16,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:16,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700310953] [2022-11-21 16:59:16,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:16,804 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-21 16:59:16,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:16,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700310953] [2022-11-21 16:59:16,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700310953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:59:16,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:59:16,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:59:16,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974054155] [2022-11-21 16:59:16,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:59:16,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:59:16,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:16,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:59:16,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:59:16,810 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 761 [2022-11-21 16:59:16,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 784 transitions, 2277 flow. Second operand has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 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) [2022-11-21 16:59:16,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:59:16,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 761 [2022-11-21 16:59:16,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:59:32,441 INFO L130 PetriNetUnfolder]: 7684/51223 cut-off events. [2022-11-21 16:59:32,441 INFO L131 PetriNetUnfolder]: For 27661/29081 co-relation queries the response was YES. [2022-11-21 16:59:33,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75019 conditions, 51223 events. 7684/51223 cut-off events. For 27661/29081 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 775878 event pairs, 5092 based on Foata normal form. 20/48092 useless extension candidates. Maximal degree in co-relation 74992. Up to 8735 conditions per place. [2022-11-21 16:59:33,578 INFO L137 encePairwiseOnDemand]: 744/761 looper letters, 188 selfloop transitions, 12 changer transitions 14/898 dead transitions. [2022-11-21 16:59:33,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 898 transitions, 3011 flow [2022-11-21 16:59:33,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:59:33,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:59:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4783 transitions. [2022-11-21 16:59:33,590 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8978787309930543 [2022-11-21 16:59:33,591 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4783 transitions. [2022-11-21 16:59:33,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4783 transitions. [2022-11-21 16:59:33,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:59:33,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4783 transitions. [2022-11-21 16:59:33,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 683.2857142857143) internal successors, (4783), 7 states have internal predecessors, (4783), 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) [2022-11-21 16:59:33,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 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) [2022-11-21 16:59:33,614 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 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) [2022-11-21 16:59:33,614 INFO L175 Difference]: Start difference. First operand has 733 places, 784 transitions, 2277 flow. Second operand 7 states and 4783 transitions. [2022-11-21 16:59:33,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 898 transitions, 3011 flow [2022-11-21 16:59:33,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 898 transitions, 3011 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:59:33,784 INFO L231 Difference]: Finished difference. Result has 743 places, 786 transitions, 2336 flow [2022-11-21 16:59:33,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=733, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=772, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2336, PETRI_PLACES=743, PETRI_TRANSITIONS=786} [2022-11-21 16:59:33,785 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 59 predicate places. [2022-11-21 16:59:33,785 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 786 transitions, 2336 flow [2022-11-21 16:59:33,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 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) [2022-11-21 16:59:33,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:59:33,786 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:59:33,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:59:33,787 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:59:33,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:59:33,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1801948532, now seen corresponding path program 3 times [2022-11-21 16:59:33,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:59:33,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744114291] [2022-11-21 16:59:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:59:33,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:59:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:59:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-21 16:59:34,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:59:34,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744114291] [2022-11-21 16:59:34,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744114291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:59:34,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:59:34,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:59:34,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244475735] [2022-11-21 16:59:34,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:59:34,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:59:34,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:59:34,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:59:34,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:59:34,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 761 [2022-11-21 16:59:34,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 786 transitions, 2336 flow. Second operand has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 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) [2022-11-21 16:59:34,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:59:34,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 761 [2022-11-21 16:59:34,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand