./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:32:07,252 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:32:07,383 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:32:07,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:32:07,396 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:32:07,441 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:32:07,443 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:32:07,443 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:32:07,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:32:07,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:32:07,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:32:07,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:32:07,453 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:32:07,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:32:07,456 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:32:07,456 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:32:07,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:32:07,457 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:32:07,458 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:32:07,458 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:32:07,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:32:07,459 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:32:07,460 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:32:07,460 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:32:07,461 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:32:07,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:32:07,462 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:32:07,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:32:07,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:32:07,464 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:32:07,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:32:07,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:32:07,466 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:32:07,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:32:07,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:32:07,467 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:32:07,467 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:32:07,467 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:32:07,467 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:32:07,468 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_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2023-11-06 22:32:07,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:32:07,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:32:07,874 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:32:07,876 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:32:07,877 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:32:07,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2023-11-06 22:32:11,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:32:11,550 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:32:11,551 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2023-11-06 22:32:11,562 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/data/d9debd8fc/eb12d1a6f02549e3a2db72d508d817a6/FLAG41ea40112 [2023-11-06 22:32:11,577 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/data/d9debd8fc/eb12d1a6f02549e3a2db72d508d817a6 [2023-11-06 22:32:11,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:32:11,582 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:32:11,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:32:11,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:32:11,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:32:11,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:32:11" (1/1) ... [2023-11-06 22:32:11,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10d2efb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:11, skipping insertion in model container [2023-11-06 22:32:11,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:32:11" (1/1) ... [2023-11-06 22:32:11,638 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:32:11,884 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_b313acaf-43c9-47ec-a71a-2f1c5f114edd/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2023-11-06 22:32:11,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:32:11,931 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:32:11,991 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_b313acaf-43c9-47ec-a71a-2f1c5f114edd/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2023-11-06 22:32:11,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:32:12,016 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:32:12,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12 WrapperNode [2023-11-06 22:32:12,017 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:32:12,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:32:12,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:32:12,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:32:12,028 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12" (1/1) ... [2023-11-06 22:32:12,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12" (1/1) ... [2023-11-06 22:32:12,102 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 603 [2023-11-06 22:32:12,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:32:12,103 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:32:12,103 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:32:12,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:32:12,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12" (1/1) ... [2023-11-06 22:32:12,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12" (1/1) ... [2023-11-06 22:32:12,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12" (1/1) ... [2023-11-06 22:32:12,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12" (1/1) ... [2023-11-06 22:32:12,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12" (1/1) ... [2023-11-06 22:32:12,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12" (1/1) ... [2023-11-06 22:32:12,197 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12" (1/1) ... [2023-11-06 22:32:12,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12" (1/1) ... [2023-11-06 22:32:12,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:32:12,210 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:32:12,210 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:32:12,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:32:12,212 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12" (1/1) ... [2023-11-06 22:32:12,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:32:12,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:12,280 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:32:12,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:32:12,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:32:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:32:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:32:12,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:32:12,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:32:12,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:32:12,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:32:12,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:32:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:32:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:32:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:32:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:32:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:32:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:32:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:32:12,348 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:32:12,558 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:32:12,561 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:32:13,755 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:32:13,780 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:32:13,781 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:32:13,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:32:13 BoogieIcfgContainer [2023-11-06 22:32:13,786 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:32:13,790 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:32:13,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:32:13,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:32:13,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:32:11" (1/3) ... [2023-11-06 22:32:13,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295851cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:32:13, skipping insertion in model container [2023-11-06 22:32:13,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:32:12" (2/3) ... [2023-11-06 22:32:13,798 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295851cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:32:13, skipping insertion in model container [2023-11-06 22:32:13,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:32:13" (3/3) ... [2023-11-06 22:32:13,801 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2023-11-06 22:32:13,811 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:32:13,823 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:32:13,825 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:32:13,825 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:32:14,061 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:32:14,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 724 places, 787 transitions, 1595 flow [2023-11-06 22:32:14,658 INFO L124 PetriNetUnfolderBase]: 73/784 cut-off events. [2023-11-06 22:32:14,659 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:32:14,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 784 events. 73/784 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2727 event pairs, 0 based on Foata normal form. 0/710 useless extension candidates. Maximal degree in co-relation 583. Up to 2 conditions per place. [2023-11-06 22:32:14,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 724 places, 787 transitions, 1595 flow [2023-11-06 22:32:14,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 710 places, 773 transitions, 1564 flow [2023-11-06 22:32:14,725 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:32:14,741 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 710 places, 773 transitions, 1564 flow [2023-11-06 22:32:14,745 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 710 places, 773 transitions, 1564 flow [2023-11-06 22:32:14,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 710 places, 773 transitions, 1564 flow [2023-11-06 22:32:15,133 INFO L124 PetriNetUnfolderBase]: 73/773 cut-off events. [2023-11-06 22:32:15,133 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:32:15,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 773 events. 73/773 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2730 event pairs, 0 based on Foata normal form. 0/700 useless extension candidates. Maximal degree in co-relation 583. Up to 2 conditions per place. [2023-11-06 22:32:15,233 INFO L119 LiptonReduction]: Number of co-enabled transitions 192030 [2023-11-06 22:32:50,289 INFO L134 LiptonReduction]: Checked pairs total: 185212 [2023-11-06 22:32:50,290 INFO L136 LiptonReduction]: Total number of compositions: 997 [2023-11-06 22:32:50,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:32:50,311 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f516e03, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:32:50,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:32:50,323 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:32:50,323 INFO L124 PetriNetUnfolderBase]: 12/47 cut-off events. [2023-11-06 22:32:50,323 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:32:50,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:50,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:50,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:32:50,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:50,330 INFO L85 PathProgramCache]: Analyzing trace with hash -841812030, now seen corresponding path program 1 times [2023-11-06 22:32:50,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:50,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409865778] [2023-11-06 22:32:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:50,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:50,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:50,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409865778] [2023-11-06 22:32:50,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409865778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:50,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:50,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:32:50,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749204573] [2023-11-06 22:32:50,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:50,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:32:50,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:51,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:32:51,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:32:51,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 725 out of 1784 [2023-11-06 22:32:51,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 731.3333333333334) internal successors, (2194), 3 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:51,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:51,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 725 of 1784 [2023-11-06 22:32:51,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:51,988 INFO L124 PetriNetUnfolderBase]: 2694/3589 cut-off events. [2023-11-06 22:32:51,988 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-11-06 22:32:51,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7439 conditions, 3589 events. 2694/3589 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12714 event pairs, 1657 based on Foata normal form. 0/2552 useless extension candidates. Maximal degree in co-relation 6908. Up to 3587 conditions per place. [2023-11-06 22:32:52,014 INFO L140 encePairwiseOnDemand]: 1777/1784 looper letters, 45 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2023-11-06 22:32:52,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 222 flow [2023-11-06 22:32:52,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:32:52,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:32:52,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2229 transitions. [2023-11-06 22:32:52,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164798206278027 [2023-11-06 22:32:52,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2229 transitions. [2023-11-06 22:32:52,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2229 transitions. [2023-11-06 22:32:52,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:52,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2229 transitions. [2023-11-06 22:32:52,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 743.0) internal successors, (2229), 3 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:52,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1784.0) internal successors, (7136), 4 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:52,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1784.0) internal successors, (7136), 4 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:52,097 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 114 flow. Second operand 3 states and 2229 transitions. [2023-11-06 22:32:52,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 222 flow [2023-11-06 22:32:52,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:32:52,114 INFO L231 Difference]: Finished difference. Result has 43 places, 51 transitions, 134 flow [2023-11-06 22:32:52,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=51} [2023-11-06 22:32:52,120 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-11-06 22:32:52,120 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 51 transitions, 134 flow [2023-11-06 22:32:52,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 731.3333333333334) internal successors, (2194), 3 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:52,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:52,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:52,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:32:52,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:32:52,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:52,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2021521612, now seen corresponding path program 1 times [2023-11-06 22:32:52,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:52,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269084064] [2023-11-06 22:32:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:52,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:32:52,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:52,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269084064] [2023-11-06 22:32:52,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269084064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:52,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766096677] [2023-11-06 22:32:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:52,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:52,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:52,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:52,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:32:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:52,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:32:52,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:32:52,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:32:52,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766096677] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:32:52,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:32:52,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-06 22:32:52,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185639798] [2023-11-06 22:32:52,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:52,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:32:52,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:52,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:32:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:32:52,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 719 out of 1784 [2023-11-06 22:32:52,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 51 transitions, 134 flow. Second operand has 8 states, 8 states have (on average 722.5) internal successors, (5780), 8 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:52,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:52,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 719 of 1784 [2023-11-06 22:32:52,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:53,906 INFO L124 PetriNetUnfolderBase]: 2694/3598 cut-off events. [2023-11-06 22:32:53,906 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-06 22:32:53,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 3598 events. 2694/3598 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12710 event pairs, 1657 based on Foata normal form. 6/2569 useless extension candidates. Maximal degree in co-relation 7284. Up to 3587 conditions per place. [2023-11-06 22:32:53,931 INFO L140 encePairwiseOnDemand]: 1777/1784 looper letters, 45 selfloop transitions, 15 changer transitions 0/60 dead transitions. [2023-11-06 22:32:53,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 290 flow [2023-11-06 22:32:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:32:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:32:53,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4383 transitions. [2023-11-06 22:32:53,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40947309417040356 [2023-11-06 22:32:53,950 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4383 transitions. [2023-11-06 22:32:53,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4383 transitions. [2023-11-06 22:32:53,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:53,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4383 transitions. [2023-11-06 22:32:53,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 730.5) internal successors, (4383), 6 states have internal predecessors, (4383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:53,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1784.0) internal successors, (12488), 7 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:54,009 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1784.0) internal successors, (12488), 7 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:54,009 INFO L175 Difference]: Start difference. First operand has 43 places, 51 transitions, 134 flow. Second operand 6 states and 4383 transitions. [2023-11-06 22:32:54,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 290 flow [2023-11-06 22:32:54,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:32:54,013 INFO L231 Difference]: Finished difference. Result has 50 places, 60 transitions, 224 flow [2023-11-06 22:32:54,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=50, PETRI_TRANSITIONS=60} [2023-11-06 22:32:54,014 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-11-06 22:32:54,015 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 60 transitions, 224 flow [2023-11-06 22:32:54,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 722.5) internal successors, (5780), 8 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:54,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:54,020 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:54,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:32:54,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:54,228 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:32:54,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:54,229 INFO L85 PathProgramCache]: Analyzing trace with hash 152220180, now seen corresponding path program 2 times [2023-11-06 22:32:54,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:54,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557110599] [2023-11-06 22:32:54,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:54,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:54,549 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:32:54,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:54,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557110599] [2023-11-06 22:32:54,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557110599] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:54,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561419528] [2023-11-06 22:32:54,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:32:54,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:54,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:54,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:54,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:32:54,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:32:54,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:32:54,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:32:54,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:32:56,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:32:56,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561419528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:56,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:32:56,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-06 22:32:56,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371849453] [2023-11-06 22:32:56,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:56,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:32:56,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:56,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:32:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:32:56,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 709 out of 1784 [2023-11-06 22:32:56,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 60 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 713.4) internal successors, (3567), 5 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:56,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:32:56,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 709 of 1784 [2023-11-06 22:32:56,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:32:58,417 INFO L124 PetriNetUnfolderBase]: 3034/4117 cut-off events. [2023-11-06 22:32:58,418 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-06 22:32:58,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8413 conditions, 4117 events. 3034/4117 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15888 event pairs, 1657 based on Foata normal form. 1/2930 useless extension candidates. Maximal degree in co-relation 8325. Up to 3517 conditions per place. [2023-11-06 22:32:58,451 INFO L140 encePairwiseOnDemand]: 1780/1784 looper letters, 98 selfloop transitions, 2 changer transitions 7/107 dead transitions. [2023-11-06 22:32:58,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 107 transitions, 544 flow [2023-11-06 22:32:58,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:32:58,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:32:58,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3641 transitions. [2023-11-06 22:32:58,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40818385650224215 [2023-11-06 22:32:58,467 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3641 transitions. [2023-11-06 22:32:58,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3641 transitions. [2023-11-06 22:32:58,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:32:58,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3641 transitions. [2023-11-06 22:32:58,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 728.2) internal successors, (3641), 5 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:58,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:58,513 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:58,522 INFO L175 Difference]: Start difference. First operand has 50 places, 60 transitions, 224 flow. Second operand 5 states and 3641 transitions. [2023-11-06 22:32:58,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 107 transitions, 544 flow [2023-11-06 22:32:58,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 107 transitions, 520 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:32:58,528 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 215 flow [2023-11-06 22:32:58,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=215, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2023-11-06 22:32:58,531 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-11-06 22:32:58,532 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 215 flow [2023-11-06 22:32:58,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 713.4) internal successors, (3567), 5 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:32:58,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:32:58,534 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:58,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:58,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:58,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:32:58,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:58,745 INFO L85 PathProgramCache]: Analyzing trace with hash -822410276, now seen corresponding path program 3 times [2023-11-06 22:32:58,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:58,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827597969] [2023-11-06 22:32:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:58,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:32:59,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:59,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827597969] [2023-11-06 22:32:59,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827597969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:59,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939528628] [2023-11-06 22:32:59,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:32:59,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:59,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:59,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:59,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:32:59,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:32:59,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:32:59,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:32:59,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:33:00,285 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:33:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939528628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:00,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:33:00,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-06 22:33:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672085342] [2023-11-06 22:33:00,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:00,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:00,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:00,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:33:00,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 709 out of 1784 [2023-11-06 22:33:00,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 713.4) internal successors, (3567), 5 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:00,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:00,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 709 of 1784 [2023-11-06 22:33:00,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:02,280 INFO L124 PetriNetUnfolderBase]: 3224/4457 cut-off events. [2023-11-06 22:33:02,280 INFO L125 PetriNetUnfolderBase]: For 693/693 co-relation queries the response was YES. [2023-11-06 22:33:02,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9603 conditions, 4457 events. 3224/4457 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18374 event pairs, 1919 based on Foata normal form. 1/3672 useless extension candidates. Maximal degree in co-relation 9571. Up to 3969 conditions per place. [2023-11-06 22:33:02,308 INFO L140 encePairwiseOnDemand]: 1780/1784 looper letters, 101 selfloop transitions, 3 changer transitions 7/111 dead transitions. [2023-11-06 22:33:02,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 111 transitions, 559 flow [2023-11-06 22:33:02,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:02,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:33:02,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3644 transitions. [2023-11-06 22:33:02,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4085201793721973 [2023-11-06 22:33:02,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3644 transitions. [2023-11-06 22:33:02,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3644 transitions. [2023-11-06 22:33:02,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:02,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3644 transitions. [2023-11-06 22:33:02,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 728.8) internal successors, (3644), 5 states have internal predecessors, (3644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:02,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:02,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:02,354 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 215 flow. Second operand 5 states and 3644 transitions. [2023-11-06 22:33:02,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 111 transitions, 559 flow [2023-11-06 22:33:02,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 111 transitions, 550 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 22:33:02,360 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 232 flow [2023-11-06 22:33:02,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2023-11-06 22:33:02,362 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-11-06 22:33:02,362 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 232 flow [2023-11-06 22:33:02,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 713.4) internal successors, (3567), 5 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:02,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:02,363 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:02,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:02,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:02,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:02,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:02,570 INFO L85 PathProgramCache]: Analyzing trace with hash 763356518, now seen corresponding path program 4 times [2023-11-06 22:33:02,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:02,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256820461] [2023-11-06 22:33:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:02,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:33:02,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:02,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256820461] [2023-11-06 22:33:02,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256820461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:33:02,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245086566] [2023-11-06 22:33:02,802 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:33:02,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:02,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:33:02,803 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:33:02,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:33:03,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:33:03,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:33:03,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:33:03,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:33:03,273 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:33:03,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:33:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:33:03,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245086566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:33:03,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:33:03,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-06 22:33:03,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670951691] [2023-11-06 22:33:03,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:33:03,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:33:03,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:03,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:33:03,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:33:03,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 719 out of 1784 [2023-11-06 22:33:03,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 232 flow. Second operand has 17 states, 17 states have (on average 721.1764705882352) internal successors, (12260), 17 states have internal predecessors, (12260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:03,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:03,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 719 of 1784 [2023-11-06 22:33:03,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:04,703 INFO L124 PetriNetUnfolderBase]: 3223/4452 cut-off events. [2023-11-06 22:33:04,703 INFO L125 PetriNetUnfolderBase]: For 1808/1808 co-relation queries the response was YES. [2023-11-06 22:33:04,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10113 conditions, 4452 events. 3223/4452 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17937 event pairs, 2136 based on Foata normal form. 1/3667 useless extension candidates. Maximal degree in co-relation 10079. Up to 4438 conditions per place. [2023-11-06 22:33:04,722 INFO L140 encePairwiseOnDemand]: 1777/1784 looper letters, 47 selfloop transitions, 18 changer transitions 0/65 dead transitions. [2023-11-06 22:33:04,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 380 flow [2023-11-06 22:33:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:33:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:33:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 5099 transitions. [2023-11-06 22:33:04,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40831197950032033 [2023-11-06 22:33:04,743 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 5099 transitions. [2023-11-06 22:33:04,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 5099 transitions. [2023-11-06 22:33:04,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:04,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 5099 transitions. [2023-11-06 22:33:04,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 728.4285714285714) internal successors, (5099), 7 states have internal predecessors, (5099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:04,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1784.0) internal successors, (14272), 8 states have internal predecessors, (14272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:04,794 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1784.0) internal successors, (14272), 8 states have internal predecessors, (14272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:04,794 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 232 flow. Second operand 7 states and 5099 transitions. [2023-11-06 22:33:04,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 380 flow [2023-11-06 22:33:04,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 374 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:33:04,805 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 294 flow [2023-11-06 22:33:04,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=294, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-11-06 22:33:04,806 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-11-06 22:33:04,806 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 294 flow [2023-11-06 22:33:04,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 721.1764705882352) internal successors, (12260), 17 states have internal predecessors, (12260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:04,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:04,809 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:04,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:33:05,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b313acaf-43c9-47ec-a71a-2f1c5f114edd/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:33:05,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:05,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:05,017 INFO L85 PathProgramCache]: Analyzing trace with hash 372234976, now seen corresponding path program 5 times [2023-11-06 22:33:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:05,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262862972] [2023-11-06 22:33:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:05,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:05,830 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:33:05,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:05,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262862972] [2023-11-06 22:33:05,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262862972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:05,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:05,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:33:05,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736031499] [2023-11-06 22:33:05,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:05,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:05,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:05,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:05,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:06,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 705 out of 1784 [2023-11-06 22:33:06,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 709.4) internal successors, (3547), 5 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:06,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:06,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 705 of 1784 [2023-11-06 22:33:06,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:07,632 INFO L124 PetriNetUnfolderBase]: 3893/5527 cut-off events. [2023-11-06 22:33:07,632 INFO L125 PetriNetUnfolderBase]: For 1189/1189 co-relation queries the response was YES. [2023-11-06 22:33:07,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12125 conditions, 5527 events. 3893/5527 cut-off events. For 1189/1189 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 25354 event pairs, 2135 based on Foata normal form. 1/4558 useless extension candidates. Maximal degree in co-relation 12012. Up to 4114 conditions per place. [2023-11-06 22:33:07,683 INFO L140 encePairwiseOnDemand]: 1772/1784 looper letters, 123 selfloop transitions, 14 changer transitions 4/141 dead transitions. [2023-11-06 22:33:07,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 141 transitions, 759 flow [2023-11-06 22:33:07,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:33:07,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3649 transitions. [2023-11-06 22:33:07,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090807174887892 [2023-11-06 22:33:07,699 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3649 transitions. [2023-11-06 22:33:07,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3649 transitions. [2023-11-06 22:33:07,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:07,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3649 transitions. [2023-11-06 22:33:07,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 729.8) internal successors, (3649), 5 states have internal predecessors, (3649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:07,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:07,732 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:07,733 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 294 flow. Second operand 5 states and 3649 transitions. [2023-11-06 22:33:07,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 141 transitions, 759 flow [2023-11-06 22:33:07,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 141 transitions, 723 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-06 22:33:07,747 INFO L231 Difference]: Finished difference. Result has 67 places, 77 transitions, 374 flow [2023-11-06 22:33:07,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=67, PETRI_TRANSITIONS=77} [2023-11-06 22:33:07,750 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2023-11-06 22:33:07,750 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 77 transitions, 374 flow [2023-11-06 22:33:07,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 709.4) internal successors, (3547), 5 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:07,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:07,751 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:07,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:33:07,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:07,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash 511149970, now seen corresponding path program 6 times [2023-11-06 22:33:07,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:07,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47275185] [2023-11-06 22:33:07,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:07,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:07,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:08,425 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:33:08,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:08,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47275185] [2023-11-06 22:33:08,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47275185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:08,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:08,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:33:08,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939288093] [2023-11-06 22:33:08,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:08,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:08,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:08,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:08,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:08,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 705 out of 1784 [2023-11-06 22:33:08,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 77 transitions, 374 flow. Second operand has 5 states, 5 states have (on average 709.4) internal successors, (3547), 5 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:08,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:08,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 705 of 1784 [2023-11-06 22:33:08,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:11,117 INFO L124 PetriNetUnfolderBase]: 7204/10068 cut-off events. [2023-11-06 22:33:11,117 INFO L125 PetriNetUnfolderBase]: For 6869/6869 co-relation queries the response was YES. [2023-11-06 22:33:11,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25190 conditions, 10068 events. 7204/10068 cut-off events. For 6869/6869 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 49754 event pairs, 1989 based on Foata normal form. 1/8637 useless extension candidates. Maximal degree in co-relation 25091. Up to 4894 conditions per place. [2023-11-06 22:33:11,194 INFO L140 encePairwiseOnDemand]: 1769/1784 looper letters, 130 selfloop transitions, 43 changer transitions 3/176 dead transitions. [2023-11-06 22:33:11,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 176 transitions, 1054 flow [2023-11-06 22:33:11,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:11,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:33:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3671 transitions. [2023-11-06 22:33:11,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115470852017937 [2023-11-06 22:33:11,208 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3671 transitions. [2023-11-06 22:33:11,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3671 transitions. [2023-11-06 22:33:11,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:11,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3671 transitions. [2023-11-06 22:33:11,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 734.2) internal successors, (3671), 5 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:11,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:11,235 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:11,235 INFO L175 Difference]: Start difference. First operand has 67 places, 77 transitions, 374 flow. Second operand 5 states and 3671 transitions. [2023-11-06 22:33:11,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 176 transitions, 1054 flow [2023-11-06 22:33:11,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 176 transitions, 1043 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:33:11,253 INFO L231 Difference]: Finished difference. Result has 73 places, 107 transitions, 713 flow [2023-11-06 22:33:11,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=713, PETRI_PLACES=73, PETRI_TRANSITIONS=107} [2023-11-06 22:33:11,256 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2023-11-06 22:33:11,256 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 107 transitions, 713 flow [2023-11-06 22:33:11,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 709.4) internal successors, (3547), 5 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:11,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:11,257 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:11,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:33:11,258 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:11,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:11,258 INFO L85 PathProgramCache]: Analyzing trace with hash 710482848, now seen corresponding path program 7 times [2023-11-06 22:33:11,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:11,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243594197] [2023-11-06 22:33:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:11,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:33:11,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243594197] [2023-11-06 22:33:11,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243594197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:11,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:11,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:33:11,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750528063] [2023-11-06 22:33:11,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:11,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:11,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:11,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:12,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 704 out of 1784 [2023-11-06 22:33:12,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 107 transitions, 713 flow. Second operand has 5 states, 5 states have (on average 708.4) internal successors, (3542), 5 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:12,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:12,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 704 of 1784 [2023-11-06 22:33:12,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:15,657 INFO L124 PetriNetUnfolderBase]: 11185/15642 cut-off events. [2023-11-06 22:33:15,658 INFO L125 PetriNetUnfolderBase]: For 23164/23164 co-relation queries the response was YES. [2023-11-06 22:33:15,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46695 conditions, 15642 events. 11185/15642 cut-off events. For 23164/23164 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 82818 event pairs, 2885 based on Foata normal form. 1/13363 useless extension candidates. Maximal degree in co-relation 46593. Up to 8320 conditions per place. [2023-11-06 22:33:15,777 INFO L140 encePairwiseOnDemand]: 1772/1784 looper letters, 161 selfloop transitions, 43 changer transitions 4/208 dead transitions. [2023-11-06 22:33:15,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 208 transitions, 1640 flow [2023-11-06 22:33:15,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:15,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:33:15,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3653 transitions. [2023-11-06 22:33:15,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095291479820628 [2023-11-06 22:33:15,790 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3653 transitions. [2023-11-06 22:33:15,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3653 transitions. [2023-11-06 22:33:15,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:15,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3653 transitions. [2023-11-06 22:33:15,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 730.6) internal successors, (3653), 5 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:15,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:15,816 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:15,816 INFO L175 Difference]: Start difference. First operand has 73 places, 107 transitions, 713 flow. Second operand 5 states and 3653 transitions. [2023-11-06 22:33:15,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 208 transitions, 1640 flow [2023-11-06 22:33:15,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 208 transitions, 1626 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-06 22:33:15,880 INFO L231 Difference]: Finished difference. Result has 81 places, 135 transitions, 1155 flow [2023-11-06 22:33:15,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1155, PETRI_PLACES=81, PETRI_TRANSITIONS=135} [2023-11-06 22:33:15,882 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2023-11-06 22:33:15,882 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 135 transitions, 1155 flow [2023-11-06 22:33:15,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 708.4) internal successors, (3542), 5 states have internal predecessors, (3542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:15,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:15,883 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:15,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:33:15,884 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:15,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1335305584, now seen corresponding path program 8 times [2023-11-06 22:33:15,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:15,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037240237] [2023-11-06 22:33:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:15,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:16,573 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:33:16,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:16,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037240237] [2023-11-06 22:33:16,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037240237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:16,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:16,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:33:16,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882762801] [2023-11-06 22:33:16,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:16,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:16,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:16,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:16,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 706 out of 1784 [2023-11-06 22:33:16,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 135 transitions, 1155 flow. Second operand has 5 states, 5 states have (on average 710.4) internal successors, (3552), 5 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:16,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:16,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 706 of 1784 [2023-11-06 22:33:16,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:21,116 INFO L124 PetriNetUnfolderBase]: 11327/15868 cut-off events. [2023-11-06 22:33:21,116 INFO L125 PetriNetUnfolderBase]: For 38501/38501 co-relation queries the response was YES. [2023-11-06 22:33:21,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51489 conditions, 15868 events. 11327/15868 cut-off events. For 38501/38501 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 84663 event pairs, 4676 based on Foata normal form. 1/13573 useless extension candidates. Maximal degree in co-relation 51383. Up to 12373 conditions per place. [2023-11-06 22:33:21,240 INFO L140 encePairwiseOnDemand]: 1772/1784 looper letters, 185 selfloop transitions, 42 changer transitions 4/231 dead transitions. [2023-11-06 22:33:21,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 231 transitions, 2173 flow [2023-11-06 22:33:21,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:33:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3664 transitions. [2023-11-06 22:33:21,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41076233183856503 [2023-11-06 22:33:21,251 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3664 transitions. [2023-11-06 22:33:21,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3664 transitions. [2023-11-06 22:33:21,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:21,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3664 transitions. [2023-11-06 22:33:21,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 732.8) internal successors, (3664), 5 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:21,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:21,278 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:21,278 INFO L175 Difference]: Start difference. First operand has 81 places, 135 transitions, 1155 flow. Second operand 5 states and 3664 transitions. [2023-11-06 22:33:21,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 231 transitions, 2173 flow [2023-11-06 22:33:21,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 231 transitions, 2149 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-11-06 22:33:21,384 INFO L231 Difference]: Finished difference. Result has 88 places, 156 transitions, 1583 flow [2023-11-06 22:33:21,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1583, PETRI_PLACES=88, PETRI_TRANSITIONS=156} [2023-11-06 22:33:21,386 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 42 predicate places. [2023-11-06 22:33:21,386 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 156 transitions, 1583 flow [2023-11-06 22:33:21,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 710.4) internal successors, (3552), 5 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:21,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:21,387 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:21,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:33:21,387 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:21,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:21,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1655477142, now seen corresponding path program 1 times [2023-11-06 22:33:21,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:21,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608049466] [2023-11-06 22:33:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:21,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:33:21,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:21,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608049466] [2023-11-06 22:33:21,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608049466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:21,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:21,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:33:21,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969665571] [2023-11-06 22:33:21,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:21,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:21,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:21,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:21,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:21,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 724 out of 1784 [2023-11-06 22:33:21,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 156 transitions, 1583 flow. Second operand has 5 states, 5 states have (on average 728.6) internal successors, (3643), 5 states have internal predecessors, (3643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:21,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:21,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 724 of 1784 [2023-11-06 22:33:21,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:25,281 INFO L124 PetriNetUnfolderBase]: 11422/16037 cut-off events. [2023-11-06 22:33:25,281 INFO L125 PetriNetUnfolderBase]: For 52904/52904 co-relation queries the response was YES. [2023-11-06 22:33:25,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53801 conditions, 16037 events. 11422/16037 cut-off events. For 52904/52904 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 85977 event pairs, 5732 based on Foata normal form. 5/13704 useless extension candidates. Maximal degree in co-relation 53691. Up to 14957 conditions per place. [2023-11-06 22:33:25,399 INFO L140 encePairwiseOnDemand]: 1779/1784 looper letters, 202 selfloop transitions, 10 changer transitions 9/221 dead transitions. [2023-11-06 22:33:25,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 221 transitions, 2403 flow [2023-11-06 22:33:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:33:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:33:25,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3723 transitions. [2023-11-06 22:33:25,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41737668161434976 [2023-11-06 22:33:25,410 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3723 transitions. [2023-11-06 22:33:25,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3723 transitions. [2023-11-06 22:33:25,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:25,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3723 transitions. [2023-11-06 22:33:25,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 744.6) internal successors, (3723), 5 states have internal predecessors, (3723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:25,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:25,431 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:25,431 INFO L175 Difference]: Start difference. First operand has 88 places, 156 transitions, 1583 flow. Second operand 5 states and 3723 transitions. [2023-11-06 22:33:25,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 221 transitions, 2403 flow [2023-11-06 22:33:25,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 221 transitions, 2389 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-06 22:33:25,557 INFO L231 Difference]: Finished difference. Result has 95 places, 158 transitions, 1625 flow [2023-11-06 22:33:25,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1625, PETRI_PLACES=95, PETRI_TRANSITIONS=158} [2023-11-06 22:33:25,559 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2023-11-06 22:33:25,559 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 158 transitions, 1625 flow [2023-11-06 22:33:25,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 728.6) internal successors, (3643), 5 states have internal predecessors, (3643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:25,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:25,560 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:25,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:33:25,560 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:25,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:25,561 INFO L85 PathProgramCache]: Analyzing trace with hash 315482397, now seen corresponding path program 1 times [2023-11-06 22:33:25,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:25,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131841385] [2023-11-06 22:33:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:25,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:33:25,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131841385] [2023-11-06 22:33:25,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131841385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:25,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:25,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:25,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806442165] [2023-11-06 22:33:25,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:25,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:33:25,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:33:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:33:25,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 730 out of 1784 [2023-11-06 22:33:25,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 158 transitions, 1625 flow. Second operand has 4 states, 4 states have (on average 735.75) internal successors, (2943), 4 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:25,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:25,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 730 of 1784 [2023-11-06 22:33:25,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:30,020 INFO L124 PetriNetUnfolderBase]: 11719/16550 cut-off events. [2023-11-06 22:33:30,020 INFO L125 PetriNetUnfolderBase]: For 55201/55201 co-relation queries the response was YES. [2023-11-06 22:33:30,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55770 conditions, 16550 events. 11719/16550 cut-off events. For 55201/55201 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 90142 event pairs, 3722 based on Foata normal form. 5/14133 useless extension candidates. Maximal degree in co-relation 55656. Up to 15501 conditions per place. [2023-11-06 22:33:30,153 INFO L140 encePairwiseOnDemand]: 1780/1784 looper letters, 164 selfloop transitions, 12 changer transitions 44/220 dead transitions. [2023-11-06 22:33:30,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 220 transitions, 2544 flow [2023-11-06 22:33:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:33:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:33:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3010 transitions. [2023-11-06 22:33:30,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421804932735426 [2023-11-06 22:33:30,162 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3010 transitions. [2023-11-06 22:33:30,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3010 transitions. [2023-11-06 22:33:30,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:30,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3010 transitions. [2023-11-06 22:33:30,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 752.5) internal successors, (3010), 4 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:30,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1784.0) internal successors, (8920), 5 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:30,178 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1784.0) internal successors, (8920), 5 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:30,178 INFO L175 Difference]: Start difference. First operand has 95 places, 158 transitions, 1625 flow. Second operand 4 states and 3010 transitions. [2023-11-06 22:33:30,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 220 transitions, 2544 flow [2023-11-06 22:33:30,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 220 transitions, 2529 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:33:30,302 INFO L231 Difference]: Finished difference. Result has 98 places, 157 transitions, 1655 flow [2023-11-06 22:33:30,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1655, PETRI_PLACES=98, PETRI_TRANSITIONS=157} [2023-11-06 22:33:30,303 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2023-11-06 22:33:30,303 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 157 transitions, 1655 flow [2023-11-06 22:33:30,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 735.75) internal successors, (2943), 4 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:30,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:30,304 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:30,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:33:30,304 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:30,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1567175860, now seen corresponding path program 2 times [2023-11-06 22:33:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:30,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036474945] [2023-11-06 22:33:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:30,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:33:30,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:30,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036474945] [2023-11-06 22:33:30,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036474945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:30,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:30,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:33:30,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119744351] [2023-11-06 22:33:30,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:30,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:30,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:30,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:30,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:30,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 722 out of 1784 [2023-11-06 22:33:30,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 157 transitions, 1655 flow. Second operand has 5 states, 5 states have (on average 726.6) internal successors, (3633), 5 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:30,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:30,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 722 of 1784 [2023-11-06 22:33:30,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:34,542 INFO L124 PetriNetUnfolderBase]: 12368/17607 cut-off events. [2023-11-06 22:33:34,542 INFO L125 PetriNetUnfolderBase]: For 54985/54985 co-relation queries the response was YES. [2023-11-06 22:33:34,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58646 conditions, 17607 events. 12368/17607 cut-off events. For 54985/54985 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 99459 event pairs, 2708 based on Foata normal form. 5/15038 useless extension candidates. Maximal degree in co-relation 58531. Up to 8237 conditions per place. [2023-11-06 22:33:34,682 INFO L140 encePairwiseOnDemand]: 1774/1784 looper letters, 202 selfloop transitions, 68 changer transitions 31/301 dead transitions. [2023-11-06 22:33:34,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 301 transitions, 3023 flow [2023-11-06 22:33:34,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:33:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:33:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4513 transitions. [2023-11-06 22:33:34,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42161808669656203 [2023-11-06 22:33:34,695 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4513 transitions. [2023-11-06 22:33:34,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4513 transitions. [2023-11-06 22:33:34,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:34,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4513 transitions. [2023-11-06 22:33:34,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 752.1666666666666) internal successors, (4513), 6 states have internal predecessors, (4513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:34,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1784.0) internal successors, (12488), 7 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:34,716 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1784.0) internal successors, (12488), 7 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:34,717 INFO L175 Difference]: Start difference. First operand has 98 places, 157 transitions, 1655 flow. Second operand 6 states and 4513 transitions. [2023-11-06 22:33:34,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 301 transitions, 3023 flow [2023-11-06 22:33:34,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 301 transitions, 2998 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-06 22:33:34,852 INFO L231 Difference]: Finished difference. Result has 104 places, 172 transitions, 2103 flow [2023-11-06 22:33:34,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2103, PETRI_PLACES=104, PETRI_TRANSITIONS=172} [2023-11-06 22:33:34,853 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 58 predicate places. [2023-11-06 22:33:34,853 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 172 transitions, 2103 flow [2023-11-06 22:33:34,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 726.6) internal successors, (3633), 5 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:34,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:34,854 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:34,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:33:34,854 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:34,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:34,855 INFO L85 PathProgramCache]: Analyzing trace with hash 797840624, now seen corresponding path program 1 times [2023-11-06 22:33:34,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:34,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138936578] [2023-11-06 22:33:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:34,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:33:35,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:35,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138936578] [2023-11-06 22:33:35,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138936578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:35,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:35,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:35,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941441157] [2023-11-06 22:33:35,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:35,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:33:35,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:35,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:33:35,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:33:35,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 730 out of 1784 [2023-11-06 22:33:35,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 172 transitions, 2103 flow. Second operand has 4 states, 4 states have (on average 735.75) internal successors, (2943), 4 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:35,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:35,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 730 of 1784 [2023-11-06 22:33:35,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:38,498 INFO L124 PetriNetUnfolderBase]: 12386/17664 cut-off events. [2023-11-06 22:33:38,498 INFO L125 PetriNetUnfolderBase]: For 75413/75413 co-relation queries the response was YES. [2023-11-06 22:33:38,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63544 conditions, 17664 events. 12386/17664 cut-off events. For 75413/75413 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 100084 event pairs, 2575 based on Foata normal form. 5/15151 useless extension candidates. Maximal degree in co-relation 63428. Up to 14292 conditions per place. [2023-11-06 22:33:38,667 INFO L140 encePairwiseOnDemand]: 1780/1784 looper letters, 174 selfloop transitions, 13 changer transitions 59/246 dead transitions. [2023-11-06 22:33:38,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 246 transitions, 3223 flow [2023-11-06 22:33:38,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:33:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:33:38,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3023 transitions. [2023-11-06 22:33:38,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236266816143498 [2023-11-06 22:33:38,677 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3023 transitions. [2023-11-06 22:33:38,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3023 transitions. [2023-11-06 22:33:38,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:38,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3023 transitions. [2023-11-06 22:33:38,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 755.75) internal successors, (3023), 4 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:38,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1784.0) internal successors, (8920), 5 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:38,693 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1784.0) internal successors, (8920), 5 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:38,693 INFO L175 Difference]: Start difference. First operand has 104 places, 172 transitions, 2103 flow. Second operand 4 states and 3023 transitions. [2023-11-06 22:33:38,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 246 transitions, 3223 flow [2023-11-06 22:33:38,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 246 transitions, 3176 flow, removed 23 selfloop flow, removed 2 redundant places. [2023-11-06 22:33:38,969 INFO L231 Difference]: Finished difference. Result has 107 places, 159 transitions, 1941 flow [2023-11-06 22:33:38,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1941, PETRI_PLACES=107, PETRI_TRANSITIONS=159} [2023-11-06 22:33:38,970 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 61 predicate places. [2023-11-06 22:33:38,970 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 159 transitions, 1941 flow [2023-11-06 22:33:38,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 735.75) internal successors, (2943), 4 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:38,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:38,971 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:38,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:33:38,972 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:38,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:38,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2061824480, now seen corresponding path program 2 times [2023-11-06 22:33:38,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:38,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176815453] [2023-11-06 22:33:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:38,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:33:39,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:39,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176815453] [2023-11-06 22:33:39,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176815453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:39,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:39,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:39,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641309256] [2023-11-06 22:33:39,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:39,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:33:39,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:39,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:33:39,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:33:39,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 730 out of 1784 [2023-11-06 22:33:39,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 159 transitions, 1941 flow. Second operand has 4 states, 4 states have (on average 735.75) internal successors, (2943), 4 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:39,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:39,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 730 of 1784 [2023-11-06 22:33:39,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:42,612 INFO L124 PetriNetUnfolderBase]: 10414/14858 cut-off events. [2023-11-06 22:33:42,612 INFO L125 PetriNetUnfolderBase]: For 54257/54257 co-relation queries the response was YES. [2023-11-06 22:33:42,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51364 conditions, 14858 events. 10414/14858 cut-off events. For 54257/54257 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 80985 event pairs, 4823 based on Foata normal form. 5/12559 useless extension candidates. Maximal degree in co-relation 51282. Up to 12216 conditions per place. [2023-11-06 22:33:42,750 INFO L140 encePairwiseOnDemand]: 1781/1784 looper letters, 130 selfloop transitions, 3 changer transitions 73/206 dead transitions. [2023-11-06 22:33:42,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 206 transitions, 2593 flow [2023-11-06 22:33:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:33:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:33:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3019 transitions. [2023-11-06 22:33:42,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42306614349775784 [2023-11-06 22:33:42,760 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3019 transitions. [2023-11-06 22:33:42,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3019 transitions. [2023-11-06 22:33:42,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:42,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3019 transitions. [2023-11-06 22:33:42,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 754.75) internal successors, (3019), 4 states have internal predecessors, (3019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:42,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1784.0) internal successors, (8920), 5 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:42,775 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1784.0) internal successors, (8920), 5 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:42,775 INFO L175 Difference]: Start difference. First operand has 107 places, 159 transitions, 1941 flow. Second operand 4 states and 3019 transitions. [2023-11-06 22:33:42,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 206 transitions, 2593 flow [2023-11-06 22:33:42,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 206 transitions, 2516 flow, removed 32 selfloop flow, removed 2 redundant places. [2023-11-06 22:33:42,931 INFO L231 Difference]: Finished difference. Result has 108 places, 116 transitions, 1087 flow [2023-11-06 22:33:42,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1087, PETRI_PLACES=108, PETRI_TRANSITIONS=116} [2023-11-06 22:33:42,932 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2023-11-06 22:33:42,932 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 116 transitions, 1087 flow [2023-11-06 22:33:42,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 735.75) internal successors, (2943), 4 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:42,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:42,933 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:42,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:33:42,934 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:42,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:42,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1336781774, now seen corresponding path program 3 times [2023-11-06 22:33:42,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:42,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160884883] [2023-11-06 22:33:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:42,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:43,209 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:33:43,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:43,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160884883] [2023-11-06 22:33:43,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160884883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:43,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:43,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:33:43,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208534054] [2023-11-06 22:33:43,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:43,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:33:43,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:43,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:33:43,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:33:43,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 721 out of 1784 [2023-11-06 22:33:43,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 116 transitions, 1087 flow. Second operand has 5 states, 5 states have (on average 725.6) internal successors, (3628), 5 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:43,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:43,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 721 of 1784 [2023-11-06 22:33:43,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:46,283 INFO L124 PetriNetUnfolderBase]: 10259/14362 cut-off events. [2023-11-06 22:33:46,283 INFO L125 PetriNetUnfolderBase]: For 41461/41461 co-relation queries the response was YES. [2023-11-06 22:33:46,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47779 conditions, 14362 events. 10259/14362 cut-off events. For 41461/41461 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 75642 event pairs, 1047 based on Foata normal form. 4/12136 useless extension candidates. Maximal degree in co-relation 47742. Up to 6897 conditions per place. [2023-11-06 22:33:46,432 INFO L140 encePairwiseOnDemand]: 1775/1784 looper letters, 191 selfloop transitions, 33 changer transitions 33/257 dead transitions. [2023-11-06 22:33:46,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 257 transitions, 2410 flow [2023-11-06 22:33:46,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:33:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:33:46,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4498 transitions. [2023-11-06 22:33:46,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4202167414050822 [2023-11-06 22:33:46,443 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4498 transitions. [2023-11-06 22:33:46,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4498 transitions. [2023-11-06 22:33:46,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:46,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4498 transitions. [2023-11-06 22:33:46,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 749.6666666666666) internal successors, (4498), 6 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:46,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1784.0) internal successors, (12488), 7 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:46,462 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1784.0) internal successors, (12488), 7 states have internal predecessors, (12488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:46,463 INFO L175 Difference]: Start difference. First operand has 108 places, 116 transitions, 1087 flow. Second operand 6 states and 4498 transitions. [2023-11-06 22:33:46,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 257 transitions, 2410 flow [2023-11-06 22:33:46,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 257 transitions, 2232 flow, removed 30 selfloop flow, removed 11 redundant places. [2023-11-06 22:33:46,676 INFO L231 Difference]: Finished difference. Result has 104 places, 131 transitions, 1305 flow [2023-11-06 22:33:46,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1305, PETRI_PLACES=104, PETRI_TRANSITIONS=131} [2023-11-06 22:33:46,676 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 58 predicate places. [2023-11-06 22:33:46,676 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 131 transitions, 1305 flow [2023-11-06 22:33:46,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 725.6) internal successors, (3628), 5 states have internal predecessors, (3628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:46,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:46,677 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:46,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:33:46,677 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:46,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:46,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1447060521, now seen corresponding path program 2 times [2023-11-06 22:33:46,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:46,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553912300] [2023-11-06 22:33:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:46,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:33:46,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:46,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553912300] [2023-11-06 22:33:46,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553912300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:46,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:46,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:46,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45204964] [2023-11-06 22:33:46,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:46,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:33:46,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:46,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:33:46,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:33:46,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 730 out of 1784 [2023-11-06 22:33:46,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 131 transitions, 1305 flow. Second operand has 4 states, 4 states have (on average 735.75) internal successors, (2943), 4 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:46,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:46,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 730 of 1784 [2023-11-06 22:33:46,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:49,773 INFO L124 PetriNetUnfolderBase]: 9720/13545 cut-off events. [2023-11-06 22:33:49,773 INFO L125 PetriNetUnfolderBase]: For 46469/46469 co-relation queries the response was YES. [2023-11-06 22:33:49,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46379 conditions, 13545 events. 9720/13545 cut-off events. For 46469/46469 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 69544 event pairs, 4966 based on Foata normal form. 6/11457 useless extension candidates. Maximal degree in co-relation 46344. Up to 12855 conditions per place. [2023-11-06 22:33:49,885 INFO L140 encePairwiseOnDemand]: 1781/1784 looper letters, 109 selfloop transitions, 0 changer transitions 61/170 dead transitions. [2023-11-06 22:33:49,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 170 transitions, 1897 flow [2023-11-06 22:33:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:33:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:33:49,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2998 transitions. [2023-11-06 22:33:49,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201233183856502 [2023-11-06 22:33:49,893 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2998 transitions. [2023-11-06 22:33:49,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2998 transitions. [2023-11-06 22:33:49,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:49,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2998 transitions. [2023-11-06 22:33:49,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 749.5) internal successors, (2998), 4 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:49,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1784.0) internal successors, (8920), 5 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:49,904 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1784.0) internal successors, (8920), 5 states have internal predecessors, (8920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:49,905 INFO L175 Difference]: Start difference. First operand has 104 places, 131 transitions, 1305 flow. Second operand 4 states and 2998 transitions. [2023-11-06 22:33:49,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 170 transitions, 1897 flow [2023-11-06 22:33:50,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 170 transitions, 1833 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-11-06 22:33:50,006 INFO L231 Difference]: Finished difference. Result has 100 places, 109 transitions, 952 flow [2023-11-06 22:33:50,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=952, PETRI_PLACES=100, PETRI_TRANSITIONS=109} [2023-11-06 22:33:50,007 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 54 predicate places. [2023-11-06 22:33:50,007 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 109 transitions, 952 flow [2023-11-06 22:33:50,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 735.75) internal successors, (2943), 4 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:50,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:50,008 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:50,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:33:50,008 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:50,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:50,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2108953253, now seen corresponding path program 1 times [2023-11-06 22:33:50,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:50,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237509549] [2023-11-06 22:33:50,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:50,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:33:50,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:50,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237509549] [2023-11-06 22:33:50,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237509549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:50,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:50,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:50,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693759351] [2023-11-06 22:33:50,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:50,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:50,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:50,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:50,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:50,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 736 out of 1784 [2023-11-06 22:33:50,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 109 transitions, 952 flow. Second operand has 3 states, 3 states have (on average 744.3333333333334) internal successors, (2233), 3 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:50,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:50,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 736 of 1784 [2023-11-06 22:33:50,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:53,115 INFO L124 PetriNetUnfolderBase]: 13580/18603 cut-off events. [2023-11-06 22:33:53,116 INFO L125 PetriNetUnfolderBase]: For 50265/50265 co-relation queries the response was YES. [2023-11-06 22:33:53,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59602 conditions, 18603 events. 13580/18603 cut-off events. For 50265/50265 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 93648 event pairs, 5551 based on Foata normal form. 174/15709 useless extension candidates. Maximal degree in co-relation 59570. Up to 12838 conditions per place. [2023-11-06 22:33:53,298 INFO L140 encePairwiseOnDemand]: 1780/1784 looper letters, 152 selfloop transitions, 6 changer transitions 0/158 dead transitions. [2023-11-06 22:33:53,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 158 transitions, 1634 flow [2023-11-06 22:33:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:33:53,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2281 transitions. [2023-11-06 22:33:53,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42619581464872947 [2023-11-06 22:33:53,305 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2281 transitions. [2023-11-06 22:33:53,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2281 transitions. [2023-11-06 22:33:53,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:53,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2281 transitions. [2023-11-06 22:33:53,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 760.3333333333334) internal successors, (2281), 3 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:53,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1784.0) internal successors, (7136), 4 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:53,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1784.0) internal successors, (7136), 4 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:53,317 INFO L175 Difference]: Start difference. First operand has 100 places, 109 transitions, 952 flow. Second operand 3 states and 2281 transitions. [2023-11-06 22:33:53,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 158 transitions, 1634 flow [2023-11-06 22:33:53,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 158 transitions, 1448 flow, removed 57 selfloop flow, removed 8 redundant places. [2023-11-06 22:33:53,507 INFO L231 Difference]: Finished difference. Result has 82 places, 109 transitions, 824 flow [2023-11-06 22:33:53,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=824, PETRI_PLACES=82, PETRI_TRANSITIONS=109} [2023-11-06 22:33:53,508 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2023-11-06 22:33:53,508 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 109 transitions, 824 flow [2023-11-06 22:33:53,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 744.3333333333334) internal successors, (2233), 3 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:53,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:53,509 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:53,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:33:53,510 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:53,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:53,510 INFO L85 PathProgramCache]: Analyzing trace with hash -2098855106, now seen corresponding path program 1 times [2023-11-06 22:33:53,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:53,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202397917] [2023-11-06 22:33:53,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:53,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:53,776 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-06 22:33:53,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:53,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202397917] [2023-11-06 22:33:53,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202397917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:53,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:53,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:53,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427917375] [2023-11-06 22:33:53,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:53,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:53,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:53,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:53,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:53,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 736 out of 1784 [2023-11-06 22:33:53,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 109 transitions, 824 flow. Second operand has 3 states, 3 states have (on average 746.6666666666666) internal successors, (2240), 3 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:53,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:53,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 736 of 1784 [2023-11-06 22:33:53,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:33:57,880 INFO L124 PetriNetUnfolderBase]: 17620/24087 cut-off events. [2023-11-06 22:33:57,881 INFO L125 PetriNetUnfolderBase]: For 41951/41951 co-relation queries the response was YES. [2023-11-06 22:33:58,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73718 conditions, 24087 events. 17620/24087 cut-off events. For 41951/41951 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 126110 event pairs, 7251 based on Foata normal form. 0/20527 useless extension candidates. Maximal degree in co-relation 73691. Up to 18974 conditions per place. [2023-11-06 22:33:58,096 INFO L140 encePairwiseOnDemand]: 1781/1784 looper letters, 157 selfloop transitions, 9 changer transitions 0/166 dead transitions. [2023-11-06 22:33:58,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 166 transitions, 1551 flow [2023-11-06 22:33:58,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:33:58,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:33:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2283 transitions. [2023-11-06 22:33:58,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265695067264574 [2023-11-06 22:33:58,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2283 transitions. [2023-11-06 22:33:58,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2283 transitions. [2023-11-06 22:33:58,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:33:58,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2283 transitions. [2023-11-06 22:33:58,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:58,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1784.0) internal successors, (7136), 4 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:58,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1784.0) internal successors, (7136), 4 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:58,113 INFO L175 Difference]: Start difference. First operand has 82 places, 109 transitions, 824 flow. Second operand 3 states and 2283 transitions. [2023-11-06 22:33:58,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 166 transitions, 1551 flow [2023-11-06 22:33:58,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 166 transitions, 1507 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:33:58,366 INFO L231 Difference]: Finished difference. Result has 83 places, 110 transitions, 831 flow [2023-11-06 22:33:58,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=831, PETRI_PLACES=83, PETRI_TRANSITIONS=110} [2023-11-06 22:33:58,366 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2023-11-06 22:33:58,366 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 110 transitions, 831 flow [2023-11-06 22:33:58,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 746.6666666666666) internal successors, (2240), 3 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:58,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:33:58,367 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:33:58,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:33:58,367 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:33:58,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:58,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2071518956, now seen corresponding path program 1 times [2023-11-06 22:33:58,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:58,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102968864] [2023-11-06 22:33:58,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:58,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-06 22:33:58,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:58,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102968864] [2023-11-06 22:33:58,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102968864] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:58,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:58,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:33:58,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595837276] [2023-11-06 22:33:58,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:58,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:33:58,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:58,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:33:58,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:33:58,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 736 out of 1784 [2023-11-06 22:33:58,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 110 transitions, 831 flow. Second operand has 3 states, 3 states have (on average 747.0) internal successors, (2241), 3 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:58,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:33:58,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 736 of 1784 [2023-11-06 22:33:58,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:05,004 INFO L124 PetriNetUnfolderBase]: 26586/36145 cut-off events. [2023-11-06 22:34:05,004 INFO L125 PetriNetUnfolderBase]: For 70111/70111 co-relation queries the response was YES. [2023-11-06 22:34:05,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115100 conditions, 36145 events. 26586/36145 cut-off events. For 70111/70111 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 195810 event pairs, 10113 based on Foata normal form. 452/30565 useless extension candidates. Maximal degree in co-relation 115073. Up to 24328 conditions per place. [2023-11-06 22:34:05,289 INFO L140 encePairwiseOnDemand]: 1779/1784 looper letters, 151 selfloop transitions, 11 changer transitions 0/162 dead transitions. [2023-11-06 22:34:05,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 162 transitions, 1518 flow [2023-11-06 22:34:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:34:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:34:05,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2281 transitions. [2023-11-06 22:34:05,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42619581464872947 [2023-11-06 22:34:05,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2281 transitions. [2023-11-06 22:34:05,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2281 transitions. [2023-11-06 22:34:05,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:05,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2281 transitions. [2023-11-06 22:34:05,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 760.3333333333334) internal successors, (2281), 3 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:05,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1784.0) internal successors, (7136), 4 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:05,304 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1784.0) internal successors, (7136), 4 states have internal predecessors, (7136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:05,304 INFO L175 Difference]: Start difference. First operand has 83 places, 110 transitions, 831 flow. Second operand 3 states and 2281 transitions. [2023-11-06 22:34:05,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 162 transitions, 1518 flow [2023-11-06 22:34:05,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 162 transitions, 1501 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:34:05,423 INFO L231 Difference]: Finished difference. Result has 85 places, 113 transitions, 869 flow [2023-11-06 22:34:05,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=869, PETRI_PLACES=85, PETRI_TRANSITIONS=113} [2023-11-06 22:34:05,424 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2023-11-06 22:34:05,424 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 113 transitions, 869 flow [2023-11-06 22:34:05,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 747.0) internal successors, (2241), 3 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:05,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:05,425 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:05,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:34:05,425 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-06 22:34:05,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:05,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1301517550, now seen corresponding path program 1 times [2023-11-06 22:34:05,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:05,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204947438] [2023-11-06 22:34:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:05,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-06 22:34:06,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:06,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204947438] [2023-11-06 22:34:06,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204947438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:06,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:06,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:34:06,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842632028] [2023-11-06 22:34:06,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:06,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:34:06,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:06,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:34:06,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:34:06,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 723 out of 1784 [2023-11-06 22:34:06,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 113 transitions, 869 flow. Second operand has 4 states, 4 states have (on average 732.75) internal successors, (2931), 4 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:06,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:06,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 723 of 1784 [2023-11-06 22:34:06,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand