./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:19,329 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:19,404 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:05:19,410 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:19,411 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:19,460 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:19,461 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:19,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:19,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:19,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:19,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:19,465 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:19,465 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:19,466 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:19,466 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:19,467 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:19,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:19,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:19,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:19,502 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:19,504 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:19,504 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:19,505 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:19,505 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:19,505 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:19,506 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:19,507 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:19,507 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:19,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:19,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:19,509 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:19,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:19,509 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:19,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:19,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:19,510 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:19,510 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:19,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:19,510 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:19,511 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa [2023-11-19 08:05:19,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:19,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:19,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:19,835 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:19,836 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:19,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-19 08:05:23,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:23,417 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:23,418 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-19 08:05:23,443 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/data/dfa9903c7/627ccce78ca14f4ca698d09f8e86e612/FLAGf0537ada5 [2023-11-19 08:05:23,458 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/data/dfa9903c7/627ccce78ca14f4ca698d09f8e86e612 [2023-11-19 08:05:23,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:23,463 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:23,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:23,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:23,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:23,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:23" (1/1) ... [2023-11-19 08:05:23,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d1b9e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:23, skipping insertion in model container [2023-11-19 08:05:23,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:23" (1/1) ... [2023-11-19 08:05:23,560 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:23,796 WARN L240 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_909813e6-a39b-4b7f-aee5-e8f93e04e204/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-11-19 08:05:24,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:24,179 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:24,192 WARN L240 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_909813e6-a39b-4b7f-aee5-e8f93e04e204/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-11-19 08:05:24,246 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:24,289 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:05:24,289 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:05:24,297 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:24,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24 WrapperNode [2023-11-19 08:05:24,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:24,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:24,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:24,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:24,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,327 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,360 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2023-11-19 08:05:24,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:24,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:24,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:24,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:24,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,388 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,389 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,426 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:24,427 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:24,428 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:24,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:24,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24" (1/1) ... [2023-11-19 08:05:24,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:24,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:24,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:24,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:24,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:05:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:05:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:05:24,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:05:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:05:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:05:24,529 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:05:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:05:24,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:05:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:24,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:24,534 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 08:05:24,682 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:24,685 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:25,146 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:25,405 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:25,405 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:05:25,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:25 BoogieIcfgContainer [2023-11-19 08:05:25,411 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:25,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:25,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:25,418 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:25,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:23" (1/3) ... [2023-11-19 08:05:25,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f43f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:25, skipping insertion in model container [2023-11-19 08:05:25,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:24" (2/3) ... [2023-11-19 08:05:25,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f43f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:25, skipping insertion in model container [2023-11-19 08:05:25,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:25" (3/3) ... [2023-11-19 08:05:25,423 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-19 08:05:25,432 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 08:05:25,443 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:25,444 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:05:25,445 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:05:25,505 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:05:25,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 95 transitions, 198 flow [2023-11-19 08:05:25,611 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2023-11-19 08:05:25,612 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:25,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-19 08:05:25,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 95 transitions, 198 flow [2023-11-19 08:05:25,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 93 transitions, 192 flow [2023-11-19 08:05:25,625 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:05:25,635 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 93 transitions, 192 flow [2023-11-19 08:05:25,638 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 93 transitions, 192 flow [2023-11-19 08:05:25,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 93 transitions, 192 flow [2023-11-19 08:05:25,665 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2023-11-19 08:05:25,666 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:25,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-19 08:05:25,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 1388 [2023-11-19 08:05:30,569 INFO L134 LiptonReduction]: Checked pairs total: 3382 [2023-11-19 08:05:30,570 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-11-19 08:05:30,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:30,594 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=LoopHeads, 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;@62737fbd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:30,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-19 08:05:30,599 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:05:30,599 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-19 08:05:30,599 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:30,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:30,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 08:05:30,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:30,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:30,606 INFO L85 PathProgramCache]: Analyzing trace with hash 482243288, now seen corresponding path program 1 times [2023-11-19 08:05:30,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:30,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304621641] [2023-11-19 08:05:30,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:30,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:31,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:31,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304621641] [2023-11-19 08:05:31,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304621641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:31,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:31,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:05:31,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115814045] [2023-11-19 08:05:31,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:31,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:31,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:31,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 180 [2023-11-19 08:05:31,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-11-19 08:05:31,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:31,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 180 [2023-11-19 08:05:31,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:31,495 INFO L124 PetriNetUnfolderBase]: 275/468 cut-off events. [2023-11-19 08:05:31,495 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 08:05:31,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 468 events. 275/468 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1779 event pairs, 30 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 944. Up to 396 conditions per place. [2023-11-19 08:05:31,501 INFO L140 encePairwiseOnDemand]: 177/180 looper letters, 23 selfloop transitions, 2 changer transitions 2/27 dead transitions. [2023-11-19 08:05:31,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 114 flow [2023-11-19 08:05:31,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:05:31,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-11-19 08:05:31,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2023-11-19 08:05:31,530 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-11-19 08:05:31,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-11-19 08:05:31,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:31,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-11-19 08:05:31,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2023-11-19 08:05:31,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2023-11-19 08:05:31,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2023-11-19 08:05:31,550 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 44 flow. Second operand 3 states and 268 transitions. [2023-11-19 08:05:31,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 114 flow [2023-11-19 08:05:31,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:31,556 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 42 flow [2023-11-19 08:05:31,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-11-19 08:05:31,563 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-11-19 08:05:31,563 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 42 flow [2023-11-19 08:05:31,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 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) [2023-11-19 08:05:31,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:31,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:31,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:31,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:31,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:31,575 INFO L85 PathProgramCache]: Analyzing trace with hash -420621412, now seen corresponding path program 1 times [2023-11-19 08:05:31,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:31,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036372572] [2023-11-19 08:05:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:31,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:31,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:31,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:31,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036372572] [2023-11-19 08:05:31,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036372572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:31,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:31,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:05:31,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015100183] [2023-11-19 08:05:31,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:31,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:31,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:31,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:31,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:31,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 180 [2023-11-19 08:05:31,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-11-19 08:05:31,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:31,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 180 [2023-11-19 08:05:31,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:32,020 INFO L124 PetriNetUnfolderBase]: 193/338 cut-off events. [2023-11-19 08:05:32,021 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 08:05:32,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 338 events. 193/338 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1140 event pairs, 65 based on Foata normal form. 12/350 useless extension candidates. Maximal degree in co-relation 702. Up to 243 conditions per place. [2023-11-19 08:05:32,028 INFO L140 encePairwiseOnDemand]: 177/180 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-11-19 08:05:32,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 24 transitions, 104 flow [2023-11-19 08:05:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:05:32,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-11-19 08:05:32,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48518518518518516 [2023-11-19 08:05:32,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-11-19 08:05:32,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-11-19 08:05:32,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:32,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-11-19 08:05:32,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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) [2023-11-19 08:05:32,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2023-11-19 08:05:32,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2023-11-19 08:05:32,042 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 42 flow. Second operand 3 states and 262 transitions. [2023-11-19 08:05:32,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 24 transitions, 104 flow [2023-11-19 08:05:32,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 24 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:32,044 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 46 flow [2023-11-19 08:05:32,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-11-19 08:05:32,047 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-11-19 08:05:32,047 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 46 flow [2023-11-19 08:05:32,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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) [2023-11-19 08:05:32,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:32,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:32,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:05:32,055 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:32,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:32,058 INFO L85 PathProgramCache]: Analyzing trace with hash -492147834, now seen corresponding path program 1 times [2023-11-19 08:05:32,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:32,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564998453] [2023-11-19 08:05:32,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:32,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:32,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:32,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:32,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564998453] [2023-11-19 08:05:32,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564998453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:32,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:32,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:32,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222914858] [2023-11-19 08:05:32,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:32,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:32,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:32,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:32,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:32,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 180 [2023-11-19 08:05:32,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2023-11-19 08:05:32,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:32,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 180 [2023-11-19 08:05:32,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:33,103 INFO L124 PetriNetUnfolderBase]: 172/305 cut-off events. [2023-11-19 08:05:33,104 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-19 08:05:33,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 305 events. 172/305 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1040 event pairs, 76 based on Foata normal form. 12/317 useless extension candidates. Maximal degree in co-relation 666. Up to 177 conditions per place. [2023-11-19 08:05:33,107 INFO L140 encePairwiseOnDemand]: 177/180 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-11-19 08:05:33,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 121 flow [2023-11-19 08:05:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:05:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-11-19 08:05:33,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2023-11-19 08:05:33,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-11-19 08:05:33,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-11-19 08:05:33,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:33,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-11-19 08:05:33,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 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) [2023-11-19 08:05:33,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2023-11-19 08:05:33,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2023-11-19 08:05:33,114 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 46 flow. Second operand 3 states and 246 transitions. [2023-11-19 08:05:33,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 26 transitions, 121 flow [2023-11-19 08:05:33,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 115 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:33,116 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 50 flow [2023-11-19 08:05:33,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2023-11-19 08:05:33,117 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-11-19 08:05:33,117 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 50 flow [2023-11-19 08:05:33,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2023-11-19 08:05:33,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:33,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:33,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:05:33,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:33,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash -21469874, now seen corresponding path program 1 times [2023-11-19 08:05:33,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:33,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878634620] [2023-11-19 08:05:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:33,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:34,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:34,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878634620] [2023-11-19 08:05:34,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878634620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:34,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:34,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:34,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748848016] [2023-11-19 08:05:34,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:34,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:34,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:34,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:34,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 180 [2023-11-19 08:05:34,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 50 flow. Second operand has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 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) [2023-11-19 08:05:34,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:34,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 180 [2023-11-19 08:05:34,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:34,458 INFO L124 PetriNetUnfolderBase]: 216/379 cut-off events. [2023-11-19 08:05:34,458 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-19 08:05:34,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 379 events. 216/379 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1370 event pairs, 27 based on Foata normal form. 4/383 useless extension candidates. Maximal degree in co-relation 875. Up to 244 conditions per place. [2023-11-19 08:05:34,462 INFO L140 encePairwiseOnDemand]: 173/180 looper letters, 30 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2023-11-19 08:05:34,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 176 flow [2023-11-19 08:05:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:05:34,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 420 transitions. [2023-11-19 08:05:34,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-11-19 08:05:34,465 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 420 transitions. [2023-11-19 08:05:34,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 420 transitions. [2023-11-19 08:05:34,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:34,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 420 transitions. [2023-11-19 08:05:34,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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) [2023-11-19 08:05:34,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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) [2023-11-19 08:05:34,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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) [2023-11-19 08:05:34,471 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 50 flow. Second operand 5 states and 420 transitions. [2023-11-19 08:05:34,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 176 flow [2023-11-19 08:05:34,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:34,474 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 97 flow [2023-11-19 08:05:34,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-11-19 08:05:34,475 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-11-19 08:05:34,475 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 97 flow [2023-11-19 08:05:34,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 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) [2023-11-19 08:05:34,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:34,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:34,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:05:34,477 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:34,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:34,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1549366558, now seen corresponding path program 2 times [2023-11-19 08:05:34,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:34,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155754263] [2023-11-19 08:05:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:34,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:35,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:35,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155754263] [2023-11-19 08:05:35,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155754263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:35,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:35,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:35,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632798334] [2023-11-19 08:05:35,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:35,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:35,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:35,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:35,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 180 [2023-11-19 08:05:35,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 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) [2023-11-19 08:05:35,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:35,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 180 [2023-11-19 08:05:35,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:36,022 INFO L124 PetriNetUnfolderBase]: 238/418 cut-off events. [2023-11-19 08:05:36,022 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-11-19 08:05:36,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1190 conditions, 418 events. 238/418 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1565 event pairs, 35 based on Foata normal form. 4/422 useless extension candidates. Maximal degree in co-relation 1176. Up to 269 conditions per place. [2023-11-19 08:05:36,027 INFO L140 encePairwiseOnDemand]: 171/180 looper letters, 31 selfloop transitions, 14 changer transitions 0/45 dead transitions. [2023-11-19 08:05:36,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 257 flow [2023-11-19 08:05:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:36,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:05:36,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 502 transitions. [2023-11-19 08:05:36,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648148148148148 [2023-11-19 08:05:36,031 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 502 transitions. [2023-11-19 08:05:36,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 502 transitions. [2023-11-19 08:05:36,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:36,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 502 transitions. [2023-11-19 08:05:36,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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) [2023-11-19 08:05:36,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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) [2023-11-19 08:05:36,037 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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) [2023-11-19 08:05:36,038 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 97 flow. Second operand 6 states and 502 transitions. [2023-11-19 08:05:36,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 257 flow [2023-11-19 08:05:36,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:05:36,042 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 191 flow [2023-11-19 08:05:36,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-19 08:05:36,043 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-11-19 08:05:36,044 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 191 flow [2023-11-19 08:05:36,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 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) [2023-11-19 08:05:36,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:36,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:36,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:05:36,045 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:36,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:36,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1107591662, now seen corresponding path program 1 times [2023-11-19 08:05:36,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:36,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517246282] [2023-11-19 08:05:36,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:36,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:37,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:37,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517246282] [2023-11-19 08:05:37,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517246282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:37,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:37,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:37,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860349312] [2023-11-19 08:05:37,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:37,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:05:37,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:37,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:05:37,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:05:37,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 180 [2023-11-19 08:05:37,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 191 flow. Second operand has 8 states, 8 states have (on average 76.625) internal successors, (613), 8 states have internal predecessors, (613), 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) [2023-11-19 08:05:37,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:37,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 180 [2023-11-19 08:05:37,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:38,162 INFO L124 PetriNetUnfolderBase]: 262/467 cut-off events. [2023-11-19 08:05:38,163 INFO L125 PetriNetUnfolderBase]: For 444/444 co-relation queries the response was YES. [2023-11-19 08:05:38,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1601 conditions, 467 events. 262/467 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1851 event pairs, 21 based on Foata normal form. 8/475 useless extension candidates. Maximal degree in co-relation 1584. Up to 248 conditions per place. [2023-11-19 08:05:38,167 INFO L140 encePairwiseOnDemand]: 173/180 looper letters, 33 selfloop transitions, 14 changer transitions 1/48 dead transitions. [2023-11-19 08:05:38,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 349 flow [2023-11-19 08:05:38,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:38,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:05:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 489 transitions. [2023-11-19 08:05:38,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2023-11-19 08:05:38,172 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 489 transitions. [2023-11-19 08:05:38,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 489 transitions. [2023-11-19 08:05:38,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:38,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 489 transitions. [2023-11-19 08:05:38,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.5) internal successors, (489), 6 states have internal predecessors, (489), 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) [2023-11-19 08:05:38,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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) [2023-11-19 08:05:38,181 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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) [2023-11-19 08:05:38,181 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 191 flow. Second operand 6 states and 489 transitions. [2023-11-19 08:05:38,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 349 flow [2023-11-19 08:05:38,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 342 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-19 08:05:38,193 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 270 flow [2023-11-19 08:05:38,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-11-19 08:05:38,196 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 17 predicate places. [2023-11-19 08:05:38,196 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 270 flow [2023-11-19 08:05:38,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.625) internal successors, (613), 8 states have internal predecessors, (613), 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) [2023-11-19 08:05:38,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:38,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:38,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:05:38,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:38,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:38,198 INFO L85 PathProgramCache]: Analyzing trace with hash -247748927, now seen corresponding path program 1 times [2023-11-19 08:05:38,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:38,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170582106] [2023-11-19 08:05:38,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:38,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:38,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:38,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170582106] [2023-11-19 08:05:38,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170582106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:38,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:38,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:38,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087862090] [2023-11-19 08:05:38,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:38,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:38,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:38,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:38,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 180 [2023-11-19 08:05:38,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 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) [2023-11-19 08:05:38,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:38,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 180 [2023-11-19 08:05:38,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:39,216 INFO L124 PetriNetUnfolderBase]: 321/587 cut-off events. [2023-11-19 08:05:39,216 INFO L125 PetriNetUnfolderBase]: For 1180/1180 co-relation queries the response was YES. [2023-11-19 08:05:39,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 587 events. 321/587 cut-off events. For 1180/1180 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2593 event pairs, 35 based on Foata normal form. 10/597 useless extension candidates. Maximal degree in co-relation 2232. Up to 309 conditions per place. [2023-11-19 08:05:39,223 INFO L140 encePairwiseOnDemand]: 170/180 looper letters, 53 selfloop transitions, 31 changer transitions 16/100 dead transitions. [2023-11-19 08:05:39,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 100 transitions, 832 flow [2023-11-19 08:05:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:05:39,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 08:05:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 903 transitions. [2023-11-19 08:05:39,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45606060606060606 [2023-11-19 08:05:39,229 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 903 transitions. [2023-11-19 08:05:39,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 903 transitions. [2023-11-19 08:05:39,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:39,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 903 transitions. [2023-11-19 08:05:39,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 82.0909090909091) internal successors, (903), 11 states have internal predecessors, (903), 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) [2023-11-19 08:05:39,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 180.0) internal successors, (2160), 12 states have internal predecessors, (2160), 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) [2023-11-19 08:05:39,240 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 180.0) internal successors, (2160), 12 states have internal predecessors, (2160), 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) [2023-11-19 08:05:39,240 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 270 flow. Second operand 11 states and 903 transitions. [2023-11-19 08:05:39,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 100 transitions, 832 flow [2023-11-19 08:05:39,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 100 transitions, 827 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-19 08:05:39,252 INFO L231 Difference]: Finished difference. Result has 60 places, 60 transitions, 623 flow [2023-11-19 08:05:39,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=623, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2023-11-19 08:05:39,253 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2023-11-19 08:05:39,253 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 623 flow [2023-11-19 08:05:39,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 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) [2023-11-19 08:05:39,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:39,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:39,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:05:39,255 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:39,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:39,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1880356637, now seen corresponding path program 2 times [2023-11-19 08:05:39,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:39,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39794764] [2023-11-19 08:05:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:39,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:40,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:40,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39794764] [2023-11-19 08:05:40,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39794764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:40,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:40,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:05:40,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304479704] [2023-11-19 08:05:40,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:40,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 08:05:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:40,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 08:05:40,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:05:41,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 180 [2023-11-19 08:05:41,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 623 flow. Second operand has 9 states, 9 states have (on average 74.44444444444444) internal successors, (670), 9 states have internal predecessors, (670), 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) [2023-11-19 08:05:41,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:41,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 180 [2023-11-19 08:05:41,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:41,602 INFO L124 PetriNetUnfolderBase]: 322/609 cut-off events. [2023-11-19 08:05:41,603 INFO L125 PetriNetUnfolderBase]: For 2991/2991 co-relation queries the response was YES. [2023-11-19 08:05:41,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 609 events. 322/609 cut-off events. For 2991/2991 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2830 event pairs, 39 based on Foata normal form. 15/624 useless extension candidates. Maximal degree in co-relation 3116. Up to 381 conditions per place. [2023-11-19 08:05:41,611 INFO L140 encePairwiseOnDemand]: 171/180 looper letters, 63 selfloop transitions, 30 changer transitions 8/101 dead transitions. [2023-11-19 08:05:41,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 101 transitions, 1155 flow [2023-11-19 08:05:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:05:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 568 transitions. [2023-11-19 08:05:41,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2023-11-19 08:05:41,615 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 568 transitions. [2023-11-19 08:05:41,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 568 transitions. [2023-11-19 08:05:41,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:41,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 568 transitions. [2023-11-19 08:05:41,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.14285714285714) internal successors, (568), 7 states have internal predecessors, (568), 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) [2023-11-19 08:05:41,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 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) [2023-11-19 08:05:41,621 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 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) [2023-11-19 08:05:41,621 INFO L175 Difference]: Start difference. First operand has 60 places, 60 transitions, 623 flow. Second operand 7 states and 568 transitions. [2023-11-19 08:05:41,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 101 transitions, 1155 flow [2023-11-19 08:05:41,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 101 transitions, 1134 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:41,638 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 915 flow [2023-11-19 08:05:41,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=915, PETRI_PLACES=67, PETRI_TRANSITIONS=74} [2023-11-19 08:05:41,642 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 41 predicate places. [2023-11-19 08:05:41,642 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 915 flow [2023-11-19 08:05:41,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 74.44444444444444) internal successors, (670), 9 states have internal predecessors, (670), 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) [2023-11-19 08:05:41,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:41,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:41,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:05:41,645 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:41,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:41,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1777493885, now seen corresponding path program 3 times [2023-11-19 08:05:41,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:41,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377087435] [2023-11-19 08:05:41,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:41,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:42,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:42,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377087435] [2023-11-19 08:05:42,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377087435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:42,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:42,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:42,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398027756] [2023-11-19 08:05:42,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:42,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:42,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:42,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:42,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:42,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 180 [2023-11-19 08:05:42,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 74 transitions, 915 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2023-11-19 08:05:42,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:42,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 180 [2023-11-19 08:05:42,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:43,051 INFO L124 PetriNetUnfolderBase]: 299/576 cut-off events. [2023-11-19 08:05:43,052 INFO L125 PetriNetUnfolderBase]: For 3594/3594 co-relation queries the response was YES. [2023-11-19 08:05:43,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3364 conditions, 576 events. 299/576 cut-off events. For 3594/3594 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2701 event pairs, 48 based on Foata normal form. 4/580 useless extension candidates. Maximal degree in co-relation 3330. Up to 386 conditions per place. [2023-11-19 08:05:43,061 INFO L140 encePairwiseOnDemand]: 170/180 looper letters, 44 selfloop transitions, 61 changer transitions 9/114 dead transitions. [2023-11-19 08:05:43,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 114 transitions, 1519 flow [2023-11-19 08:05:43,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:05:43,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:05:43,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 620 transitions. [2023-11-19 08:05:43,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2023-11-19 08:05:43,066 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 620 transitions. [2023-11-19 08:05:43,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 620 transitions. [2023-11-19 08:05:43,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:43,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 620 transitions. [2023-11-19 08:05:43,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 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) [2023-11-19 08:05:43,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 180.0) internal successors, (1620), 9 states have internal predecessors, (1620), 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) [2023-11-19 08:05:43,075 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 180.0) internal successors, (1620), 9 states have internal predecessors, (1620), 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) [2023-11-19 08:05:43,075 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 915 flow. Second operand 8 states and 620 transitions. [2023-11-19 08:05:43,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 114 transitions, 1519 flow [2023-11-19 08:05:43,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 114 transitions, 1479 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-19 08:05:43,126 INFO L231 Difference]: Finished difference. Result has 74 places, 92 transitions, 1311 flow [2023-11-19 08:05:43,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1311, PETRI_PLACES=74, PETRI_TRANSITIONS=92} [2023-11-19 08:05:43,128 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2023-11-19 08:05:43,128 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 92 transitions, 1311 flow [2023-11-19 08:05:43,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2023-11-19 08:05:43,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:43,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:43,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:05:43,129 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:43,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash 732261849, now seen corresponding path program 1 times [2023-11-19 08:05:43,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:43,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540657705] [2023-11-19 08:05:43,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:43,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:43,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:43,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540657705] [2023-11-19 08:05:43,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540657705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:43,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:43,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:43,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999454391] [2023-11-19 08:05:43,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:43,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:43,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:43,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:43,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:43,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 180 [2023-11-19 08:05:43,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 92 transitions, 1311 flow. Second operand has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2023-11-19 08:05:43,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:43,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 180 [2023-11-19 08:05:43,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:44,259 INFO L124 PetriNetUnfolderBase]: 300/581 cut-off events. [2023-11-19 08:05:44,259 INFO L125 PetriNetUnfolderBase]: For 5391/5391 co-relation queries the response was YES. [2023-11-19 08:05:44,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 581 events. 300/581 cut-off events. For 5391/5391 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2710 event pairs, 42 based on Foata normal form. 8/589 useless extension candidates. Maximal degree in co-relation 3758. Up to 389 conditions per place. [2023-11-19 08:05:44,268 INFO L140 encePairwiseOnDemand]: 172/180 looper letters, 86 selfloop transitions, 35 changer transitions 10/131 dead transitions. [2023-11-19 08:05:44,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 131 transitions, 1988 flow [2023-11-19 08:05:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:05:44,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:05:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 648 transitions. [2023-11-19 08:05:44,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-11-19 08:05:44,272 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 648 transitions. [2023-11-19 08:05:44,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 648 transitions. [2023-11-19 08:05:44,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:44,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 648 transitions. [2023-11-19 08:05:44,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.0) internal successors, (648), 8 states have internal predecessors, (648), 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) [2023-11-19 08:05:44,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 180.0) internal successors, (1620), 9 states have internal predecessors, (1620), 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) [2023-11-19 08:05:44,278 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 180.0) internal successors, (1620), 9 states have internal predecessors, (1620), 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) [2023-11-19 08:05:44,279 INFO L175 Difference]: Start difference. First operand has 74 places, 92 transitions, 1311 flow. Second operand 8 states and 648 transitions. [2023-11-19 08:05:44,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 131 transitions, 1988 flow [2023-11-19 08:05:44,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 131 transitions, 1866 flow, removed 55 selfloop flow, removed 3 redundant places. [2023-11-19 08:05:44,306 INFO L231 Difference]: Finished difference. Result has 82 places, 106 transitions, 1576 flow [2023-11-19 08:05:44,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1576, PETRI_PLACES=82, PETRI_TRANSITIONS=106} [2023-11-19 08:05:44,307 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-11-19 08:05:44,308 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 106 transitions, 1576 flow [2023-11-19 08:05:44,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2023-11-19 08:05:44,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:44,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:44,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:05:44,309 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:44,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1815145593, now seen corresponding path program 1 times [2023-11-19 08:05:44,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:44,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338968039] [2023-11-19 08:05:44,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:44,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:44,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:44,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:44,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338968039] [2023-11-19 08:05:44,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338968039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:44,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:44,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:44,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948990783] [2023-11-19 08:05:44,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:44,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:44,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:44,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:44,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:44,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 180 [2023-11-19 08:05:44,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 106 transitions, 1576 flow. Second operand has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2023-11-19 08:05:44,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:44,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 180 [2023-11-19 08:05:44,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:45,376 INFO L124 PetriNetUnfolderBase]: 302/589 cut-off events. [2023-11-19 08:05:45,377 INFO L125 PetriNetUnfolderBase]: For 6329/6329 co-relation queries the response was YES. [2023-11-19 08:05:45,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3939 conditions, 589 events. 302/589 cut-off events. For 6329/6329 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2783 event pairs, 55 based on Foata normal form. 6/595 useless extension candidates. Maximal degree in co-relation 3898. Up to 358 conditions per place. [2023-11-19 08:05:45,386 INFO L140 encePairwiseOnDemand]: 170/180 looper letters, 74 selfloop transitions, 45 changer transitions 15/134 dead transitions. [2023-11-19 08:05:45,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 134 transitions, 2138 flow [2023-11-19 08:05:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:05:45,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 565 transitions. [2023-11-19 08:05:45,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2023-11-19 08:05:45,391 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 565 transitions. [2023-11-19 08:05:45,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 565 transitions. [2023-11-19 08:05:45,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:45,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 565 transitions. [2023-11-19 08:05:45,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 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) [2023-11-19 08:05:45,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 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) [2023-11-19 08:05:45,397 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 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) [2023-11-19 08:05:45,398 INFO L175 Difference]: Start difference. First operand has 82 places, 106 transitions, 1576 flow. Second operand 7 states and 565 transitions. [2023-11-19 08:05:45,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 134 transitions, 2138 flow [2023-11-19 08:05:45,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 134 transitions, 2073 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-11-19 08:05:45,440 INFO L231 Difference]: Finished difference. Result has 87 places, 109 transitions, 1705 flow [2023-11-19 08:05:45,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1705, PETRI_PLACES=87, PETRI_TRANSITIONS=109} [2023-11-19 08:05:45,441 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 61 predicate places. [2023-11-19 08:05:45,441 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 109 transitions, 1705 flow [2023-11-19 08:05:45,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.33333333333333) internal successors, (458), 6 states have internal predecessors, (458), 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) [2023-11-19 08:05:45,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:45,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:45,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:05:45,442 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:45,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1210123631, now seen corresponding path program 2 times [2023-11-19 08:05:45,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:45,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003479505] [2023-11-19 08:05:45,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:45,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:46,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:46,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003479505] [2023-11-19 08:05:46,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003479505] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:46,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:46,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:46,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966582768] [2023-11-19 08:05:46,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:46,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:05:46,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:46,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:05:46,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:05:46,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 180 [2023-11-19 08:05:46,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 109 transitions, 1705 flow. Second operand has 8 states, 8 states have (on average 72.75) internal successors, (582), 8 states have internal predecessors, (582), 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) [2023-11-19 08:05:46,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:46,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 180 [2023-11-19 08:05:46,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:47,126 INFO L124 PetriNetUnfolderBase]: 281/562 cut-off events. [2023-11-19 08:05:47,127 INFO L125 PetriNetUnfolderBase]: For 6849/6849 co-relation queries the response was YES. [2023-11-19 08:05:47,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3837 conditions, 562 events. 281/562 cut-off events. For 6849/6849 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2692 event pairs, 46 based on Foata normal form. 8/570 useless extension candidates. Maximal degree in co-relation 3794. Up to 233 conditions per place. [2023-11-19 08:05:47,135 INFO L140 encePairwiseOnDemand]: 171/180 looper letters, 52 selfloop transitions, 61 changer transitions 18/131 dead transitions. [2023-11-19 08:05:47,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 131 transitions, 2112 flow [2023-11-19 08:05:47,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:05:47,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:05:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 699 transitions. [2023-11-19 08:05:47,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43148148148148147 [2023-11-19 08:05:47,139 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 699 transitions. [2023-11-19 08:05:47,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 699 transitions. [2023-11-19 08:05:47,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:47,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 699 transitions. [2023-11-19 08:05:47,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.66666666666667) internal successors, (699), 9 states have internal predecessors, (699), 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) [2023-11-19 08:05:47,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 180.0) internal successors, (1800), 10 states have internal predecessors, (1800), 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) [2023-11-19 08:05:47,147 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 180.0) internal successors, (1800), 10 states have internal predecessors, (1800), 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) [2023-11-19 08:05:47,148 INFO L175 Difference]: Start difference. First operand has 87 places, 109 transitions, 1705 flow. Second operand 9 states and 699 transitions. [2023-11-19 08:05:47,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 131 transitions, 2112 flow [2023-11-19 08:05:47,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 131 transitions, 2040 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-11-19 08:05:47,188 INFO L231 Difference]: Finished difference. Result has 91 places, 99 transitions, 1637 flow [2023-11-19 08:05:47,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1637, PETRI_PLACES=91, PETRI_TRANSITIONS=99} [2023-11-19 08:05:47,189 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 65 predicate places. [2023-11-19 08:05:47,189 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 99 transitions, 1637 flow [2023-11-19 08:05:47,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.75) internal successors, (582), 8 states have internal predecessors, (582), 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) [2023-11-19 08:05:47,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:47,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:47,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:05:47,191 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:47,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1219349231, now seen corresponding path program 3 times [2023-11-19 08:05:47,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:47,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340531423] [2023-11-19 08:05:47,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:47,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:47,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:47,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340531423] [2023-11-19 08:05:47,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340531423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:47,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:47,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:47,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165151130] [2023-11-19 08:05:47,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:47,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:47,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:47,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:47,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:47,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 180 [2023-11-19 08:05:47,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 1637 flow. Second operand has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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) [2023-11-19 08:05:47,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:47,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 180 [2023-11-19 08:05:47,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:47,906 INFO L124 PetriNetUnfolderBase]: 217/475 cut-off events. [2023-11-19 08:05:47,906 INFO L125 PetriNetUnfolderBase]: For 5613/5613 co-relation queries the response was YES. [2023-11-19 08:05:47,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3392 conditions, 475 events. 217/475 cut-off events. For 5613/5613 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2353 event pairs, 37 based on Foata normal form. 6/481 useless extension candidates. Maximal degree in co-relation 3349. Up to 233 conditions per place. [2023-11-19 08:05:47,913 INFO L140 encePairwiseOnDemand]: 172/180 looper letters, 60 selfloop transitions, 18 changer transitions 48/126 dead transitions. [2023-11-19 08:05:47,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 126 transitions, 2232 flow [2023-11-19 08:05:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:47,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:05:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 425 transitions. [2023-11-19 08:05:47,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-11-19 08:05:47,916 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 425 transitions. [2023-11-19 08:05:47,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 425 transitions. [2023-11-19 08:05:47,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:47,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 425 transitions. [2023-11-19 08:05:47,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 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) [2023-11-19 08:05:47,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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) [2023-11-19 08:05:47,921 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 180.0) internal successors, (1080), 6 states have internal predecessors, (1080), 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) [2023-11-19 08:05:47,921 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 1637 flow. Second operand 5 states and 425 transitions. [2023-11-19 08:05:47,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 126 transitions, 2232 flow [2023-11-19 08:05:47,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 126 transitions, 2106 flow, removed 15 selfloop flow, removed 7 redundant places. [2023-11-19 08:05:47,954 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 1068 flow [2023-11-19 08:05:47,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1068, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2023-11-19 08:05:47,956 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 63 predicate places. [2023-11-19 08:05:47,956 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 1068 flow [2023-11-19 08:05:47,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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) [2023-11-19 08:05:47,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:47,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:47,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:05:47,957 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:47,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:47,958 INFO L85 PathProgramCache]: Analyzing trace with hash 436190075, now seen corresponding path program 4 times [2023-11-19 08:05:47,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:47,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702134651] [2023-11-19 08:05:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:47,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:48,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:48,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702134651] [2023-11-19 08:05:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702134651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:48,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:48,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519720095] [2023-11-19 08:05:48,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:48,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:05:48,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:05:48,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:05:49,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 180 [2023-11-19 08:05:49,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 1068 flow. Second operand has 8 states, 8 states have (on average 72.75) internal successors, (582), 8 states have internal predecessors, (582), 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) [2023-11-19 08:05:49,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:49,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 180 [2023-11-19 08:05:49,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:49,448 INFO L124 PetriNetUnfolderBase]: 150/325 cut-off events. [2023-11-19 08:05:49,449 INFO L125 PetriNetUnfolderBase]: For 3345/3345 co-relation queries the response was YES. [2023-11-19 08:05:49,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2162 conditions, 325 events. 150/325 cut-off events. For 3345/3345 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1358 event pairs, 37 based on Foata normal form. 6/331 useless extension candidates. Maximal degree in co-relation 2121. Up to 174 conditions per place. [2023-11-19 08:05:49,454 INFO L140 encePairwiseOnDemand]: 171/180 looper letters, 57 selfloop transitions, 24 changer transitions 8/89 dead transitions. [2023-11-19 08:05:49,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 89 transitions, 1365 flow [2023-11-19 08:05:49,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:05:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 543 transitions. [2023-11-19 08:05:49,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430952380952381 [2023-11-19 08:05:49,459 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 543 transitions. [2023-11-19 08:05:49,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 543 transitions. [2023-11-19 08:05:49,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:49,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 543 transitions. [2023-11-19 08:05:49,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.57142857142857) internal successors, (543), 7 states have internal predecessors, (543), 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) [2023-11-19 08:05:49,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 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) [2023-11-19 08:05:49,465 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 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) [2023-11-19 08:05:49,466 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 1068 flow. Second operand 7 states and 543 transitions. [2023-11-19 08:05:49,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 89 transitions, 1365 flow [2023-11-19 08:05:49,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 1265 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-11-19 08:05:49,490 INFO L231 Difference]: Finished difference. Result has 89 places, 71 transitions, 998 flow [2023-11-19 08:05:49,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=998, PETRI_PLACES=89, PETRI_TRANSITIONS=71} [2023-11-19 08:05:49,491 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 63 predicate places. [2023-11-19 08:05:49,491 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 71 transitions, 998 flow [2023-11-19 08:05:49,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.75) internal successors, (582), 8 states have internal predecessors, (582), 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) [2023-11-19 08:05:49,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:49,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:49,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 08:05:49,493 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:49,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:49,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1084639301, now seen corresponding path program 5 times [2023-11-19 08:05:49,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:49,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108573108] [2023-11-19 08:05:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:49,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:50,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:50,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:50,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108573108] [2023-11-19 08:05:50,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108573108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:50,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:50,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:50,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839747032] [2023-11-19 08:05:50,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:50,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:50,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:50,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:50,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:50,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 180 [2023-11-19 08:05:50,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 71 transitions, 998 flow. Second operand has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 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) [2023-11-19 08:05:50,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:50,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 180 [2023-11-19 08:05:50,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:50,752 INFO L124 PetriNetUnfolderBase]: 142/309 cut-off events. [2023-11-19 08:05:50,752 INFO L125 PetriNetUnfolderBase]: For 3051/3051 co-relation queries the response was YES. [2023-11-19 08:05:50,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 309 events. 142/309 cut-off events. For 3051/3051 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1266 event pairs, 27 based on Foata normal form. 6/315 useless extension candidates. Maximal degree in co-relation 1954. Up to 160 conditions per place. [2023-11-19 08:05:50,757 INFO L140 encePairwiseOnDemand]: 172/180 looper letters, 58 selfloop transitions, 22 changer transitions 15/95 dead transitions. [2023-11-19 08:05:50,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 1329 flow [2023-11-19 08:05:50,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:05:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:05:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 733 transitions. [2023-11-19 08:05:50,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524691358024691 [2023-11-19 08:05:50,763 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 733 transitions. [2023-11-19 08:05:50,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 733 transitions. [2023-11-19 08:05:50,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:50,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 733 transitions. [2023-11-19 08:05:50,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.44444444444444) internal successors, (733), 9 states have internal predecessors, (733), 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) [2023-11-19 08:05:50,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 180.0) internal successors, (1800), 10 states have internal predecessors, (1800), 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) [2023-11-19 08:05:50,771 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 180.0) internal successors, (1800), 10 states have internal predecessors, (1800), 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) [2023-11-19 08:05:50,771 INFO L175 Difference]: Start difference. First operand has 89 places, 71 transitions, 998 flow. Second operand 9 states and 733 transitions. [2023-11-19 08:05:50,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 1329 flow [2023-11-19 08:05:50,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 95 transitions, 1252 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-11-19 08:05:50,792 INFO L231 Difference]: Finished difference. Result has 92 places, 65 transitions, 870 flow [2023-11-19 08:05:50,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=923, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=870, PETRI_PLACES=92, PETRI_TRANSITIONS=65} [2023-11-19 08:05:50,794 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2023-11-19 08:05:50,795 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 65 transitions, 870 flow [2023-11-19 08:05:50,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.33333333333333) internal successors, (464), 6 states have internal predecessors, (464), 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) [2023-11-19 08:05:50,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:50,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:50,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 08:05:50,796 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:50,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:50,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1992947343, now seen corresponding path program 6 times [2023-11-19 08:05:50,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:50,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979586979] [2023-11-19 08:05:50,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:50,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:52,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:52,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979586979] [2023-11-19 08:05:52,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979586979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:52,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:52,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:52,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631957316] [2023-11-19 08:05:52,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:52,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:05:52,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:52,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:05:52,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:05:52,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 180 [2023-11-19 08:05:52,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 65 transitions, 870 flow. Second operand has 8 states, 8 states have (on average 74.75) internal successors, (598), 8 states have internal predecessors, (598), 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) [2023-11-19 08:05:52,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:52,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 180 [2023-11-19 08:05:52,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:52,522 INFO L124 PetriNetUnfolderBase]: 162/340 cut-off events. [2023-11-19 08:05:52,522 INFO L125 PetriNetUnfolderBase]: For 2883/2883 co-relation queries the response was YES. [2023-11-19 08:05:52,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2057 conditions, 340 events. 162/340 cut-off events. For 2883/2883 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1404 event pairs, 18 based on Foata normal form. 6/346 useless extension candidates. Maximal degree in co-relation 2017. Up to 89 conditions per place. [2023-11-19 08:05:52,527 INFO L140 encePairwiseOnDemand]: 171/180 looper letters, 36 selfloop transitions, 23 changer transitions 30/89 dead transitions. [2023-11-19 08:05:52,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 89 transitions, 1191 flow [2023-11-19 08:05:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:05:52,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:05:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 714 transitions. [2023-11-19 08:05:52,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44074074074074077 [2023-11-19 08:05:52,532 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 714 transitions. [2023-11-19 08:05:52,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 714 transitions. [2023-11-19 08:05:52,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:52,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 714 transitions. [2023-11-19 08:05:52,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 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) [2023-11-19 08:05:52,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 180.0) internal successors, (1800), 10 states have internal predecessors, (1800), 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) [2023-11-19 08:05:52,540 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 180.0) internal successors, (1800), 10 states have internal predecessors, (1800), 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) [2023-11-19 08:05:52,540 INFO L175 Difference]: Start difference. First operand has 92 places, 65 transitions, 870 flow. Second operand 9 states and 714 transitions. [2023-11-19 08:05:52,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 89 transitions, 1191 flow [2023-11-19 08:05:52,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 1121 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-11-19 08:05:52,559 INFO L231 Difference]: Finished difference. Result has 95 places, 47 transitions, 633 flow [2023-11-19 08:05:52,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=633, PETRI_PLACES=95, PETRI_TRANSITIONS=47} [2023-11-19 08:05:52,560 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 69 predicate places. [2023-11-19 08:05:52,560 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 47 transitions, 633 flow [2023-11-19 08:05:52,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.75) internal successors, (598), 8 states have internal predecessors, (598), 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) [2023-11-19 08:05:52,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:52,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:52,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 08:05:52,561 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:52,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:52,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1225019115, now seen corresponding path program 1 times [2023-11-19 08:05:52,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:52,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103190683] [2023-11-19 08:05:52,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:52,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:53,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:53,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103190683] [2023-11-19 08:05:53,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103190683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:53,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:53,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837325810] [2023-11-19 08:05:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:53,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:05:53,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:53,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:05:53,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:54,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 180 [2023-11-19 08:05:54,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 47 transitions, 633 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2023-11-19 08:05:54,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:54,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 180 [2023-11-19 08:05:54,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:54,400 INFO L124 PetriNetUnfolderBase]: 118/255 cut-off events. [2023-11-19 08:05:54,400 INFO L125 PetriNetUnfolderBase]: For 2655/2655 co-relation queries the response was YES. [2023-11-19 08:05:54,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1613 conditions, 255 events. 118/255 cut-off events. For 2655/2655 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 946 event pairs, 19 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 1581. Up to 56 conditions per place. [2023-11-19 08:05:54,404 INFO L140 encePairwiseOnDemand]: 172/180 looper letters, 25 selfloop transitions, 21 changer transitions 25/71 dead transitions. [2023-11-19 08:05:54,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 71 transitions, 974 flow [2023-11-19 08:05:54,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:05:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 08:05:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 608 transitions. [2023-11-19 08:05:54,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2023-11-19 08:05:54,408 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 608 transitions. [2023-11-19 08:05:54,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 608 transitions. [2023-11-19 08:05:54,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:54,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 608 transitions. [2023-11-19 08:05:54,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.0) internal successors, (608), 8 states have internal predecessors, (608), 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) [2023-11-19 08:05:54,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 180.0) internal successors, (1620), 9 states have internal predecessors, (1620), 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) [2023-11-19 08:05:54,414 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 180.0) internal successors, (1620), 9 states have internal predecessors, (1620), 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) [2023-11-19 08:05:54,415 INFO L175 Difference]: Start difference. First operand has 95 places, 47 transitions, 633 flow. Second operand 8 states and 608 transitions. [2023-11-19 08:05:54,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 71 transitions, 974 flow [2023-11-19 08:05:54,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 695 flow, removed 25 selfloop flow, removed 27 redundant places. [2023-11-19 08:05:54,429 INFO L231 Difference]: Finished difference. Result has 71 places, 39 transitions, 427 flow [2023-11-19 08:05:54,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=427, PETRI_PLACES=71, PETRI_TRANSITIONS=39} [2023-11-19 08:05:54,430 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 45 predicate places. [2023-11-19 08:05:54,431 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 39 transitions, 427 flow [2023-11-19 08:05:54,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 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) [2023-11-19 08:05:54,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:54,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:54,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 08:05:54,433 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:54,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:54,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1453372583, now seen corresponding path program 2 times [2023-11-19 08:05:54,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:54,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037201180] [2023-11-19 08:05:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:54,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:55,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:55,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037201180] [2023-11-19 08:05:55,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037201180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:55,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:55,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:55,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608704548] [2023-11-19 08:05:55,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:55,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:05:55,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:55,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:05:55,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:05:55,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 180 [2023-11-19 08:05:55,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 39 transitions, 427 flow. Second operand has 8 states, 8 states have (on average 74.875) internal successors, (599), 8 states have internal predecessors, (599), 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) [2023-11-19 08:05:55,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:55,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 180 [2023-11-19 08:05:55,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:55,587 INFO L124 PetriNetUnfolderBase]: 75/170 cut-off events. [2023-11-19 08:05:55,587 INFO L125 PetriNetUnfolderBase]: For 877/877 co-relation queries the response was YES. [2023-11-19 08:05:55,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 170 events. 75/170 cut-off events. For 877/877 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 537 event pairs, 20 based on Foata normal form. 4/174 useless extension candidates. Maximal degree in co-relation 851. Up to 61 conditions per place. [2023-11-19 08:05:55,590 INFO L140 encePairwiseOnDemand]: 172/180 looper letters, 25 selfloop transitions, 11 changer transitions 15/51 dead transitions. [2023-11-19 08:05:55,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 51 transitions, 571 flow [2023-11-19 08:05:55,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:05:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2023-11-19 08:05:55,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2023-11-19 08:05:55,592 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2023-11-19 08:05:55,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2023-11-19 08:05:55,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:55,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2023-11-19 08:05:55,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 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) [2023-11-19 08:05:55,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 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) [2023-11-19 08:05:55,598 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 180.0) internal successors, (1440), 8 states have internal predecessors, (1440), 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) [2023-11-19 08:05:55,599 INFO L175 Difference]: Start difference. First operand has 71 places, 39 transitions, 427 flow. Second operand 7 states and 549 transitions. [2023-11-19 08:05:55,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 51 transitions, 571 flow [2023-11-19 08:05:55,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 51 transitions, 481 flow, removed 17 selfloop flow, removed 11 redundant places. [2023-11-19 08:05:55,605 INFO L231 Difference]: Finished difference. Result has 68 places, 31 transitions, 295 flow [2023-11-19 08:05:55,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=68, PETRI_TRANSITIONS=31} [2023-11-19 08:05:55,606 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2023-11-19 08:05:55,606 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 31 transitions, 295 flow [2023-11-19 08:05:55,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.875) internal successors, (599), 8 states have internal predecessors, (599), 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) [2023-11-19 08:05:55,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:55,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:55,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 08:05:55,608 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:55,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:55,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1476137099, now seen corresponding path program 3 times [2023-11-19 08:05:55,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:55,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543907490] [2023-11-19 08:05:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:55,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:56,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:56,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:56,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543907490] [2023-11-19 08:05:56,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543907490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:56,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:56,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:05:56,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785939384] [2023-11-19 08:05:56,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:56,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:05:56,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:56,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:05:56,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:05:56,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 180 [2023-11-19 08:05:56,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 31 transitions, 295 flow. Second operand has 10 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 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) [2023-11-19 08:05:56,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:56,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 180 [2023-11-19 08:05:56,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:57,103 INFO L124 PetriNetUnfolderBase]: 60/139 cut-off events. [2023-11-19 08:05:57,103 INFO L125 PetriNetUnfolderBase]: For 478/478 co-relation queries the response was YES. [2023-11-19 08:05:57,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 139 events. 60/139 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 395 event pairs, 16 based on Foata normal form. 4/143 useless extension candidates. Maximal degree in co-relation 640. Up to 32 conditions per place. [2023-11-19 08:05:57,105 INFO L140 encePairwiseOnDemand]: 171/180 looper letters, 18 selfloop transitions, 7 changer transitions 22/47 dead transitions. [2023-11-19 08:05:57,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 47 transitions, 442 flow [2023-11-19 08:05:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:05:57,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:05:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 677 transitions. [2023-11-19 08:05:57,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41790123456790124 [2023-11-19 08:05:57,108 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 677 transitions. [2023-11-19 08:05:57,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 677 transitions. [2023-11-19 08:05:57,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:57,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 677 transitions. [2023-11-19 08:05:57,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 75.22222222222223) internal successors, (677), 9 states have internal predecessors, (677), 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) [2023-11-19 08:05:57,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 180.0) internal successors, (1800), 10 states have internal predecessors, (1800), 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) [2023-11-19 08:05:57,114 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 180.0) internal successors, (1800), 10 states have internal predecessors, (1800), 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) [2023-11-19 08:05:57,114 INFO L175 Difference]: Start difference. First operand has 68 places, 31 transitions, 295 flow. Second operand 9 states and 677 transitions. [2023-11-19 08:05:57,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 47 transitions, 442 flow [2023-11-19 08:05:57,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 47 transitions, 326 flow, removed 10 selfloop flow, removed 16 redundant places. [2023-11-19 08:05:57,119 INFO L231 Difference]: Finished difference. Result has 59 places, 20 transitions, 124 flow [2023-11-19 08:05:57,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=124, PETRI_PLACES=59, PETRI_TRANSITIONS=20} [2023-11-19 08:05:57,119 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2023-11-19 08:05:57,120 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 20 transitions, 124 flow [2023-11-19 08:05:57,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 72.5) internal successors, (725), 10 states have internal predecessors, (725), 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) [2023-11-19 08:05:57,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:57,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:57,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 08:05:57,121 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-19 08:05:57,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:57,122 INFO L85 PathProgramCache]: Analyzing trace with hash -159089717, now seen corresponding path program 4 times [2023-11-19 08:05:57,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:57,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607461918] [2023-11-19 08:05:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:57,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:58,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:58,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607461918] [2023-11-19 08:05:58,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607461918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:58,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:58,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:58,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335687729] [2023-11-19 08:05:58,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:58,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:05:58,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:58,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:05:58,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:05:58,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 180 [2023-11-19 08:05:58,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 20 transitions, 124 flow. Second operand has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 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) [2023-11-19 08:05:58,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:58,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 180 [2023-11-19 08:05:58,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:59,012 INFO L124 PetriNetUnfolderBase]: 28/71 cut-off events. [2023-11-19 08:05:59,012 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2023-11-19 08:05:59,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 71 events. 28/71 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 139 event pairs, 6 based on Foata normal form. 4/75 useless extension candidates. Maximal degree in co-relation 252. Up to 25 conditions per place. [2023-11-19 08:05:59,013 INFO L140 encePairwiseOnDemand]: 173/180 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2023-11-19 08:05:59,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 25 transitions, 182 flow [2023-11-19 08:05:59,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:05:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 445 transitions. [2023-11-19 08:05:59,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41203703703703703 [2023-11-19 08:05:59,016 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 445 transitions. [2023-11-19 08:05:59,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 445 transitions. [2023-11-19 08:05:59,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:59,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 445 transitions. [2023-11-19 08:05:59,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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) [2023-11-19 08:05:59,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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) [2023-11-19 08:05:59,024 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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) [2023-11-19 08:05:59,024 INFO L175 Difference]: Start difference. First operand has 59 places, 20 transitions, 124 flow. Second operand 6 states and 445 transitions. [2023-11-19 08:05:59,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 25 transitions, 182 flow [2023-11-19 08:05:59,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 25 transitions, 118 flow, removed 4 selfloop flow, removed 22 redundant places. [2023-11-19 08:05:59,026 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-11-19 08:05:59,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-11-19 08:05:59,027 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-11-19 08:05:59,027 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-11-19 08:05:59,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 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) [2023-11-19 08:05:59,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-19 08:05:59,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-19 08:05:59,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-19 08:05:59,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-19 08:05:59,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-19 08:05:59,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 08:05:59,041 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 3, 2, 1, 1, 1, 1, 1] [2023-11-19 08:05:59,049 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 08:05:59,050 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:05:59,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:05:59 BasicIcfg [2023-11-19 08:05:59,054 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:05:59,054 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:05:59,054 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:05:59,055 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:05:59,055 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:25" (3/4) ... [2023-11-19 08:05:59,057 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:05:59,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-19 08:05:59,061 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-19 08:05:59,068 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2023-11-19 08:05:59,069 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-19 08:05:59,070 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 08:05:59,071 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:05:59,179 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:05:59,182 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:05:59,182 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:05:59,183 INFO L158 Benchmark]: Toolchain (without parser) took 35719.78ms. Allocated memory was 188.7MB in the beginning and 610.3MB in the end (delta: 421.5MB). Free memory was 158.7MB in the beginning and 471.7MB in the end (delta: -313.0MB). Peak memory consumption was 109.9MB. Max. memory is 16.1GB. [2023-11-19 08:05:59,183 INFO L158 Benchmark]: CDTParser took 14.59ms. Allocated memory is still 123.7MB. Free memory is still 98.7MB. Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:05:59,184 INFO L158 Benchmark]: CACSL2BoogieTranslator took 833.97ms. Allocated memory is still 188.7MB. Free memory was 158.7MB in the beginning and 132.8MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-19 08:05:59,184 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.47ms. Allocated memory is still 188.7MB. Free memory was 132.8MB in the beginning and 129.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:05:59,184 INFO L158 Benchmark]: Boogie Preprocessor took 65.11ms. Allocated memory is still 188.7MB. Free memory was 129.5MB in the beginning and 127.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:05:59,186 INFO L158 Benchmark]: RCFGBuilder took 984.16ms. Allocated memory is still 188.7MB. Free memory was 127.4MB in the beginning and 143.7MB in the end (delta: -16.3MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2023-11-19 08:05:59,187 INFO L158 Benchmark]: TraceAbstraction took 33639.00ms. Allocated memory was 188.7MB in the beginning and 610.3MB in the end (delta: 421.5MB). Free memory was 142.7MB in the beginning and 476.9MB in the end (delta: -334.2MB). Peak memory consumption was 88.3MB. Max. memory is 16.1GB. [2023-11-19 08:05:59,187 INFO L158 Benchmark]: Witness Printer took 127.87ms. Allocated memory is still 610.3MB. Free memory was 476.9MB in the beginning and 471.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:05:59,190 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 14.59ms. Allocated memory is still 123.7MB. Free memory is still 98.7MB. Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 833.97ms. Allocated memory is still 188.7MB. Free memory was 158.7MB in the beginning and 132.8MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.47ms. Allocated memory is still 188.7MB. Free memory was 132.8MB in the beginning and 129.5MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.11ms. Allocated memory is still 188.7MB. Free memory was 129.5MB in the beginning and 127.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 984.16ms. Allocated memory is still 188.7MB. Free memory was 127.4MB in the beginning and 143.7MB in the end (delta: -16.3MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. * TraceAbstraction took 33639.00ms. Allocated memory was 188.7MB in the beginning and 610.3MB in the end (delta: 421.5MB). Free memory was 142.7MB in the beginning and 476.9MB in the end (delta: -334.2MB). Peak memory consumption was 88.3MB. Max. memory is 16.1GB. * Witness Printer took 127.87ms. Allocated memory is still 610.3MB. Free memory was 476.9MB in the beginning and 471.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 98 PlacesBefore, 26 PlacesAfterwards, 93 TransitionsBefore, 19 TransitionsAfterwards, 1388 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 85 TotalNumberOfCompositions, 3382 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1325, independent: 1192, independent conditional: 0, independent unconditional: 1192, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 746, independent: 715, independent conditional: 0, independent unconditional: 715, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1325, independent: 477, independent conditional: 0, independent unconditional: 477, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 746, unknown conditional: 0, unknown unconditional: 746] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 116 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 33.5s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 950 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 751 mSDsluCounter, 888 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 780 mSDsCounter, 457 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2834 IncrementalHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 457 mSolverCounterUnsat, 108 mSDtfsCounter, 2834 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1705occurred in iteration=11, InterpolantAutomatonStates: 136, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 18.3s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 235 ConstructedInterpolants, 0 QuantifiedInterpolants, 3608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 08:05:59,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_909813e6-a39b-4b7f-aee5-e8f93e04e204/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE