./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/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_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/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_9b4abff0-8581-49ea-a1b4-1347471f0693/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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:57:54,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:57:54,946 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:57:54,952 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:57:54,952 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:57:54,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:57:54,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:57:54,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:57:54,981 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:57:54,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:57:54,982 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:57:54,983 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:57:54,983 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:57:54,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:57:54,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:57:54,985 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:57:54,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:57:54,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:57:54,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:57:54,987 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:57:54,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:57:54,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:57:54,996 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:57:54,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:57:54,997 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:57:54,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:57:54,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:57:54,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:57:55,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:57:55,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:57:55,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:57:55,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:57:55,005 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:57:55,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:57:55,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:57:55,006 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:57:55,007 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:57:55,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:57:55,008 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:57:55,009 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_9b4abff0-8581-49ea-a1b4-1347471f0693/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2023-11-06 21:57:55,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:57:55,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:57:55,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:57:55,355 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:57:55,355 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:57:55,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2023-11-06 21:57:58,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:57:58,742 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:57:58,743 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2023-11-06 21:57:58,752 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/data/5fae3fc77/00ed924e102f4fb1bc31e0a357323fd3/FLAG633ffbdfb [2023-11-06 21:57:58,772 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/data/5fae3fc77/00ed924e102f4fb1bc31e0a357323fd3 [2023-11-06 21:57:58,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:57:58,782 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:57:58,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:57:58,787 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:57:58,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:57:58,795 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:58" (1/1) ... [2023-11-06 21:57:58,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2b09cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:58, skipping insertion in model container [2023-11-06 21:57:58,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:58" (1/1) ... [2023-11-06 21:57:58,846 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:57:59,082 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_9b4abff0-8581-49ea-a1b4-1347471f0693/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-11-06 21:57:59,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:57:59,106 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:57:59,140 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_9b4abff0-8581-49ea-a1b4-1347471f0693/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-11-06 21:57:59,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:57:59,163 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:57:59,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59 WrapperNode [2023-11-06 21:57:59,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:57:59,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:57:59,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:57:59,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:57:59,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59" (1/1) ... [2023-11-06 21:57:59,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59" (1/1) ... [2023-11-06 21:57:59,226 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 316 [2023-11-06 21:57:59,227 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:57:59,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:57:59,228 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:57:59,228 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:57:59,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59" (1/1) ... [2023-11-06 21:57:59,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59" (1/1) ... [2023-11-06 21:57:59,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59" (1/1) ... [2023-11-06 21:57:59,244 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59" (1/1) ... [2023-11-06 21:57:59,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59" (1/1) ... [2023-11-06 21:57:59,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59" (1/1) ... [2023-11-06 21:57:59,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59" (1/1) ... [2023-11-06 21:57:59,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59" (1/1) ... [2023-11-06 21:57:59,273 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:57:59,274 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:57:59,274 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:57:59,274 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:57:59,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59" (1/1) ... [2023-11-06 21:57:59,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:57:59,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:59,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:57:59,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:57:59,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:57:59,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:57:59,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:57:59,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:57:59,356 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:57:59,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:57:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:57:59,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:57:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:57:59,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:57:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:57:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:57:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:57:59,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:57:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:57:59,360 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 21:57:59,484 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:57:59,487 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:58:00,074 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:58:00,097 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:58:00,097 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 21:58:00,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:00 BoogieIcfgContainer [2023-11-06 21:58:00,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:58:00,110 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:58:00,110 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:58:00,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:58:00,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:58" (1/3) ... [2023-11-06 21:58:00,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d69cd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:00, skipping insertion in model container [2023-11-06 21:58:00,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:59" (2/3) ... [2023-11-06 21:58:00,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d69cd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:00, skipping insertion in model container [2023-11-06 21:58:00,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:00" (3/3) ... [2023-11-06 21:58:00,119 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-11-06 21:58:00,158 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:58:00,172 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:58:00,173 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:58:00,173 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:58:00,329 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 21:58:00,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 375 places, 391 transitions, 803 flow [2023-11-06 21:58:00,632 INFO L124 PetriNetUnfolderBase]: 26/388 cut-off events. [2023-11-06 21:58:00,632 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:58:00,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 388 events. 26/388 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 910 event pairs, 0 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 289. Up to 2 conditions per place. [2023-11-06 21:58:00,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 375 places, 391 transitions, 803 flow [2023-11-06 21:58:00,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 361 places, 377 transitions, 772 flow [2023-11-06 21:58:00,670 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:58:00,689 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 361 places, 377 transitions, 772 flow [2023-11-06 21:58:00,695 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 361 places, 377 transitions, 772 flow [2023-11-06 21:58:00,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 361 places, 377 transitions, 772 flow [2023-11-06 21:58:00,850 INFO L124 PetriNetUnfolderBase]: 26/377 cut-off events. [2023-11-06 21:58:00,850 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:58:00,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 377 events. 26/377 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 907 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 289. Up to 2 conditions per place. [2023-11-06 21:58:00,877 INFO L119 LiptonReduction]: Number of co-enabled transitions 35358 [2023-11-06 21:58:15,164 INFO L134 LiptonReduction]: Checked pairs total: 31745 [2023-11-06 21:58:15,164 INFO L136 LiptonReduction]: Total number of compositions: 442 [2023-11-06 21:58:15,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:58:15,184 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;@28fdea83, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:58:15,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 21:58:15,191 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:58:15,191 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2023-11-06 21:58:15,191 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:58:15,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:15,192 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] [2023-11-06 21:58:15,193 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 21:58:15,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:15,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1779724847, now seen corresponding path program 1 times [2023-11-06 21:58:15,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:15,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251747312] [2023-11-06 21:58:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:15,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:15,809 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 21:58:15,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:15,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251747312] [2023-11-06 21:58:15,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251747312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:15,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:15,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:15,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623213615] [2023-11-06 21:58:15,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:15,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:15,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:15,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:15,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:15,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 833 [2023-11-06 21:58:15,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 0 states have call successors, (0), 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 21:58:15,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:15,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 833 [2023-11-06 21:58:15,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:16,069 INFO L124 PetriNetUnfolderBase]: 221/328 cut-off events. [2023-11-06 21:58:16,070 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-06 21:58:16,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 328 events. 221/328 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 773 event pairs, 138 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 534. Up to 328 conditions per place. [2023-11-06 21:58:16,074 INFO L140 encePairwiseOnDemand]: 830/833 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-06 21:58:16,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 118 flow [2023-11-06 21:58:16,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1103 transitions. [2023-11-06 21:58:16,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413765506202481 [2023-11-06 21:58:16,105 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1103 transitions. [2023-11-06 21:58:16,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1103 transitions. [2023-11-06 21:58:16,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:16,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1103 transitions. [2023-11-06 21:58:16,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 367.6666666666667) internal successors, (1103), 3 states have internal predecessors, (1103), 0 states have call successors, (0), 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 21:58:16,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 833.0) internal successors, (3332), 4 states have internal predecessors, (3332), 0 states have call successors, (0), 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 21:58:16,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 833.0) internal successors, (3332), 4 states have internal predecessors, (3332), 0 states have call successors, (0), 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 21:58:16,138 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 1103 transitions. [2023-11-06 21:58:16,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 118 flow [2023-11-06 21:58:16,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 21:58:16,147 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 66 flow [2023-11-06 21:58:16,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-11-06 21:58:16,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-11-06 21:58:16,154 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 66 flow [2023-11-06 21:58:16,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 0 states have call successors, (0), 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 21:58:16,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:16,156 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] [2023-11-06 21:58:16,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:58:16,157 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 21:58:16,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:16,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1595148529, now seen corresponding path program 1 times [2023-11-06 21:58:16,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:16,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982002755] [2023-11-06 21:58:16,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:16,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:16,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:16,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982002755] [2023-11-06 21:58:16,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982002755] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:16,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381704923] [2023-11-06 21:58:16,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:16,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:16,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:16,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:16,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:58:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:16,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:58:16,618 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:16,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:16,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381704923] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:16,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:58:16,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-06 21:58:16,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643841892] [2023-11-06 21:58:16,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:16,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:16,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:16,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:16,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:16,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 357 out of 833 [2023-11-06 21:58:16,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 360.85714285714283) internal successors, (2526), 7 states have internal predecessors, (2526), 0 states have call successors, (0), 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 21:58:16,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:16,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 357 of 833 [2023-11-06 21:58:16,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:16,979 INFO L124 PetriNetUnfolderBase]: 221/330 cut-off events. [2023-11-06 21:58:16,980 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:58:16,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 330 events. 221/330 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 773 event pairs, 138 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 673. Up to 328 conditions per place. [2023-11-06 21:58:16,986 INFO L140 encePairwiseOnDemand]: 830/833 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-11-06 21:58:16,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 128 flow [2023-11-06 21:58:16,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:58:16,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:58:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1814 transitions. [2023-11-06 21:58:16,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355342136854742 [2023-11-06 21:58:16,996 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1814 transitions. [2023-11-06 21:58:16,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1814 transitions. [2023-11-06 21:58:16,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:16,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1814 transitions. [2023-11-06 21:58:17,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 362.8) internal successors, (1814), 5 states have internal predecessors, (1814), 0 states have call successors, (0), 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 21:58:17,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 833.0) internal successors, (4998), 6 states have internal predecessors, (4998), 0 states have call successors, (0), 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 21:58:17,023 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 833.0) internal successors, (4998), 6 states have internal predecessors, (4998), 0 states have call successors, (0), 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 21:58:17,023 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 66 flow. Second operand 5 states and 1814 transitions. [2023-11-06 21:58:17,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 128 flow [2023-11-06 21:58:17,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 124 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 21:58:17,026 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 88 flow [2023-11-06 21:58:17,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-06 21:58:17,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-11-06 21:58:17,027 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 88 flow [2023-11-06 21:58:17,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 360.85714285714283) internal successors, (2526), 7 states have internal predecessors, (2526), 0 states have call successors, (0), 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 21:58:17,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:17,030 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:17,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:17,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:17,242 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 21:58:17,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:17,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1916653967, now seen corresponding path program 2 times [2023-11-06 21:58:17,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:17,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404756105] [2023-11-06 21:58:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:17,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:18,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:18,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404756105] [2023-11-06 21:58:18,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404756105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:18,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:18,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:58:18,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300961482] [2023-11-06 21:58:18,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:18,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:58:18,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:58:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:58:18,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 833 [2023-11-06 21:58:18,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 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 21:58:18,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:18,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 833 [2023-11-06 21:58:18,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:19,025 INFO L124 PetriNetUnfolderBase]: 391/589 cut-off events. [2023-11-06 21:58:19,026 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 21:58:19,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 589 events. 391/589 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1866 event pairs, 138 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1190. Up to 331 conditions per place. [2023-11-06 21:58:19,031 INFO L140 encePairwiseOnDemand]: 826/833 looper letters, 59 selfloop transitions, 5 changer transitions 10/74 dead transitions. [2023-11-06 21:58:19,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 74 transitions, 341 flow [2023-11-06 21:58:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:58:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:58:19,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2070 transitions. [2023-11-06 21:58:19,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4141656662665066 [2023-11-06 21:58:19,041 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2070 transitions. [2023-11-06 21:58:19,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2070 transitions. [2023-11-06 21:58:19,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:19,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2070 transitions. [2023-11-06 21:58:19,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 345.0) internal successors, (2070), 6 states have internal predecessors, (2070), 0 states have call successors, (0), 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 21:58:19,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 21:58:19,072 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 21:58:19,072 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 88 flow. Second operand 6 states and 2070 transitions. [2023-11-06 21:58:19,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 74 transitions, 341 flow [2023-11-06 21:58:19,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 331 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-06 21:58:19,078 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 116 flow [2023-11-06 21:58:19,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2023-11-06 21:58:19,081 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-11-06 21:58:19,081 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 116 flow [2023-11-06 21:58:19,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 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 21:58:19,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:19,084 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:19,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:58:19,084 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 21:58:19,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:19,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1852812713, now seen corresponding path program 3 times [2023-11-06 21:58:19,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:19,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131695686] [2023-11-06 21:58:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:19,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:19,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:19,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131695686] [2023-11-06 21:58:19,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131695686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:19,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:19,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:58:19,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157868757] [2023-11-06 21:58:19,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:19,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:58:19,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:19,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:58:19,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:58:20,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 833 [2023-11-06 21:58:20,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 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 21:58:20,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:20,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 833 [2023-11-06 21:58:20,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:20,630 INFO L124 PetriNetUnfolderBase]: 598/896 cut-off events. [2023-11-06 21:58:20,630 INFO L125 PetriNetUnfolderBase]: For 433/433 co-relation queries the response was YES. [2023-11-06 21:58:20,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 896 events. 598/896 cut-off events. For 433/433 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3116 event pairs, 238 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 2416. Up to 553 conditions per place. [2023-11-06 21:58:20,638 INFO L140 encePairwiseOnDemand]: 826/833 looper letters, 61 selfloop transitions, 7 changer transitions 10/78 dead transitions. [2023-11-06 21:58:20,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 78 transitions, 416 flow [2023-11-06 21:58:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:58:20,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:58:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2066 transitions. [2023-11-06 21:58:20,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4133653461384554 [2023-11-06 21:58:20,650 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2066 transitions. [2023-11-06 21:58:20,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2066 transitions. [2023-11-06 21:58:20,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:20,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2066 transitions. [2023-11-06 21:58:20,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 344.3333333333333) internal successors, (2066), 6 states have internal predecessors, (2066), 0 states have call successors, (0), 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 21:58:20,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 21:58:20,679 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 21:58:20,679 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 116 flow. Second operand 6 states and 2066 transitions. [2023-11-06 21:58:20,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 78 transitions, 416 flow [2023-11-06 21:58:20,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 395 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:20,685 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 158 flow [2023-11-06 21:58:20,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-11-06 21:58:20,686 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2023-11-06 21:58:20,686 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 158 flow [2023-11-06 21:58:20,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 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 21:58:20,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:20,688 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:20,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:58:20,688 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 21:58:20,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:20,689 INFO L85 PathProgramCache]: Analyzing trace with hash -168412153, now seen corresponding path program 4 times [2023-11-06 21:58:20,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:20,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458104556] [2023-11-06 21:58:20,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:20,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:21,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:21,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458104556] [2023-11-06 21:58:21,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458104556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:21,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:21,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:58:21,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269590712] [2023-11-06 21:58:21,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:21,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:58:21,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:21,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:58:21,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:58:22,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 833 [2023-11-06 21:58:22,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 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 21:58:22,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:22,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 833 [2023-11-06 21:58:22,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:22,789 INFO L124 PetriNetUnfolderBase]: 670/1006 cut-off events. [2023-11-06 21:58:22,789 INFO L125 PetriNetUnfolderBase]: For 1103/1103 co-relation queries the response was YES. [2023-11-06 21:58:22,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3191 conditions, 1006 events. 670/1006 cut-off events. For 1103/1103 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3684 event pairs, 230 based on Foata normal form. 1/841 useless extension candidates. Maximal degree in co-relation 3162. Up to 527 conditions per place. [2023-11-06 21:58:22,799 INFO L140 encePairwiseOnDemand]: 826/833 looper letters, 64 selfloop transitions, 11 changer transitions 10/85 dead transitions. [2023-11-06 21:58:22,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 85 transitions, 498 flow [2023-11-06 21:58:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:58:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:58:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2073 transitions. [2023-11-06 21:58:22,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.414765906362545 [2023-11-06 21:58:22,809 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2073 transitions. [2023-11-06 21:58:22,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2073 transitions. [2023-11-06 21:58:22,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:22,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2073 transitions. [2023-11-06 21:58:22,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 345.5) internal successors, (2073), 6 states have internal predecessors, (2073), 0 states have call successors, (0), 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 21:58:22,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 21:58:22,833 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 21:58:22,833 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 158 flow. Second operand 6 states and 2073 transitions. [2023-11-06 21:58:22,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 85 transitions, 498 flow [2023-11-06 21:58:22,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 85 transitions, 468 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:22,843 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 223 flow [2023-11-06 21:58:22,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-11-06 21:58:22,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2023-11-06 21:58:22,846 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 223 flow [2023-11-06 21:58:22,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 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 21:58:22,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:22,848 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:22,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:58:22,848 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 21:58:22,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash -892215221, now seen corresponding path program 5 times [2023-11-06 21:58:22,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:22,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125442911] [2023-11-06 21:58:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:22,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:23,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:23,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:23,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125442911] [2023-11-06 21:58:23,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125442911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:23,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:23,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:58:23,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844158619] [2023-11-06 21:58:23,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:23,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:58:23,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:23,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:58:23,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:58:23,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 833 [2023-11-06 21:58:23,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 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 21:58:23,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:23,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 833 [2023-11-06 21:58:23,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:24,410 INFO L124 PetriNetUnfolderBase]: 660/996 cut-off events. [2023-11-06 21:58:24,411 INFO L125 PetriNetUnfolderBase]: For 1856/1856 co-relation queries the response was YES. [2023-11-06 21:58:24,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3444 conditions, 996 events. 660/996 cut-off events. For 1856/1856 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3644 event pairs, 230 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 3412. Up to 571 conditions per place. [2023-11-06 21:58:24,422 INFO L140 encePairwiseOnDemand]: 826/833 looper letters, 60 selfloop transitions, 14 changer transitions 10/84 dead transitions. [2023-11-06 21:58:24,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 545 flow [2023-11-06 21:58:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:58:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:58:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2069 transitions. [2023-11-06 21:58:24,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139655862344938 [2023-11-06 21:58:24,433 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2069 transitions. [2023-11-06 21:58:24,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2069 transitions. [2023-11-06 21:58:24,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:24,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2069 transitions. [2023-11-06 21:58:24,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 344.8333333333333) internal successors, (2069), 6 states have internal predecessors, (2069), 0 states have call successors, (0), 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 21:58:24,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 21:58:24,459 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 21:58:24,460 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 223 flow. Second operand 6 states and 2069 transitions. [2023-11-06 21:58:24,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 545 flow [2023-11-06 21:58:24,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 526 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:24,469 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 307 flow [2023-11-06 21:58:24,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2023-11-06 21:58:24,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2023-11-06 21:58:24,471 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 307 flow [2023-11-06 21:58:24,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 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 21:58:24,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:24,473 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:24,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:58:24,473 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 21:58:24,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:24,474 INFO L85 PathProgramCache]: Analyzing trace with hash 345626747, now seen corresponding path program 6 times [2023-11-06 21:58:24,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:24,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801578419] [2023-11-06 21:58:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:24,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:25,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:25,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801578419] [2023-11-06 21:58:25,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801578419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:25,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:25,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:25,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011753399] [2023-11-06 21:58:25,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:25,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:58:25,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:25,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:58:25,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:58:25,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 833 [2023-11-06 21:58:25,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 307 flow. Second operand has 8 states, 8 states have (on average 333.625) internal successors, (2669), 8 states have internal predecessors, (2669), 0 states have call successors, (0), 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 21:58:25,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:25,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 833 [2023-11-06 21:58:25,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:26,720 INFO L124 PetriNetUnfolderBase]: 1343/2082 cut-off events. [2023-11-06 21:58:26,720 INFO L125 PetriNetUnfolderBase]: For 7523/7523 co-relation queries the response was YES. [2023-11-06 21:58:26,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8008 conditions, 2082 events. 1343/2082 cut-off events. For 7523/7523 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9740 event pairs, 396 based on Foata normal form. 6/1736 useless extension candidates. Maximal degree in co-relation 7972. Up to 973 conditions per place. [2023-11-06 21:58:26,741 INFO L140 encePairwiseOnDemand]: 824/833 looper letters, 136 selfloop transitions, 13 changer transitions 9/158 dead transitions. [2023-11-06 21:58:26,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 158 transitions, 1445 flow [2023-11-06 21:58:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2403 transitions. [2023-11-06 21:58:26,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121077002229463 [2023-11-06 21:58:26,752 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2403 transitions. [2023-11-06 21:58:26,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2403 transitions. [2023-11-06 21:58:26,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:26,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2403 transitions. [2023-11-06 21:58:26,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 343.2857142857143) internal successors, (2403), 7 states have internal predecessors, (2403), 0 states have call successors, (0), 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 21:58:26,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:26,775 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:26,775 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 307 flow. Second operand 7 states and 2403 transitions. [2023-11-06 21:58:26,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 158 transitions, 1445 flow [2023-11-06 21:58:26,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 158 transitions, 1346 flow, removed 31 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:26,799 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 480 flow [2023-11-06 21:58:26,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=480, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-11-06 21:58:26,800 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2023-11-06 21:58:26,800 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 480 flow [2023-11-06 21:58:26,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 333.625) internal successors, (2669), 8 states have internal predecessors, (2669), 0 states have call successors, (0), 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 21:58:26,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:26,802 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:26,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:58:26,802 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 21:58:26,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash -646271829, now seen corresponding path program 7 times [2023-11-06 21:58:26,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:26,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355408050] [2023-11-06 21:58:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:26,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:27,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:27,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:27,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355408050] [2023-11-06 21:58:27,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355408050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:27,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:27,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:58:27,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109863258] [2023-11-06 21:58:27,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:27,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:58:27,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:58:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:58:27,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 833 [2023-11-06 21:58:27,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 480 flow. Second operand has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 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 21:58:27,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:27,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 833 [2023-11-06 21:58:27,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:28,445 INFO L124 PetriNetUnfolderBase]: 1325/2040 cut-off events. [2023-11-06 21:58:28,445 INFO L125 PetriNetUnfolderBase]: For 7552/7552 co-relation queries the response was YES. [2023-11-06 21:58:28,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8526 conditions, 2040 events. 1325/2040 cut-off events. For 7552/7552 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9231 event pairs, 468 based on Foata normal form. 2/1870 useless extension candidates. Maximal degree in co-relation 8486. Up to 1111 conditions per place. [2023-11-06 21:58:28,470 INFO L140 encePairwiseOnDemand]: 826/833 looper letters, 72 selfloop transitions, 22 changer transitions 12/106 dead transitions. [2023-11-06 21:58:28,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 898 flow [2023-11-06 21:58:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:58:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:58:28,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2069 transitions. [2023-11-06 21:58:28,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139655862344938 [2023-11-06 21:58:28,479 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2069 transitions. [2023-11-06 21:58:28,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2069 transitions. [2023-11-06 21:58:28,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:28,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2069 transitions. [2023-11-06 21:58:28,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 344.8333333333333) internal successors, (2069), 6 states have internal predecessors, (2069), 0 states have call successors, (0), 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 21:58:28,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 21:58:28,497 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 21:58:28,498 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 480 flow. Second operand 6 states and 2069 transitions. [2023-11-06 21:58:28,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 898 flow [2023-11-06 21:58:28,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 106 transitions, 870 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 21:58:28,544 INFO L231 Difference]: Finished difference. Result has 72 places, 59 transitions, 554 flow [2023-11-06 21:58:28,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=554, PETRI_PLACES=72, PETRI_TRANSITIONS=59} [2023-11-06 21:58:28,545 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2023-11-06 21:58:28,546 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 59 transitions, 554 flow [2023-11-06 21:58:28,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 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 21:58:28,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:28,547 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:28,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:58:28,547 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 21:58:28,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash -781392701, now seen corresponding path program 8 times [2023-11-06 21:58:28,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:28,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107051486] [2023-11-06 21:58:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:28,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:29,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107051486] [2023-11-06 21:58:29,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107051486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:29,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:29,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:58:29,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418224577] [2023-11-06 21:58:29,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:29,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:58:29,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:29,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:58:29,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:58:29,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 833 [2023-11-06 21:58:29,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 59 transitions, 554 flow. Second operand has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 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 21:58:29,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:29,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 833 [2023-11-06 21:58:29,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:30,077 INFO L124 PetriNetUnfolderBase]: 1306/1998 cut-off events. [2023-11-06 21:58:30,077 INFO L125 PetriNetUnfolderBase]: For 9097/9097 co-relation queries the response was YES. [2023-11-06 21:58:30,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8754 conditions, 1998 events. 1306/1998 cut-off events. For 9097/9097 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8912 event pairs, 486 based on Foata normal form. 3/1831 useless extension candidates. Maximal degree in co-relation 8711. Up to 1191 conditions per place. [2023-11-06 21:58:30,104 INFO L140 encePairwiseOnDemand]: 826/833 looper letters, 69 selfloop transitions, 24 changer transitions 12/105 dead transitions. [2023-11-06 21:58:30,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 105 transitions, 947 flow [2023-11-06 21:58:30,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:58:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:58:30,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2067 transitions. [2023-11-06 21:58:30,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135654261704682 [2023-11-06 21:58:30,115 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2067 transitions. [2023-11-06 21:58:30,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2067 transitions. [2023-11-06 21:58:30,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:30,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2067 transitions. [2023-11-06 21:58:30,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 344.5) internal successors, (2067), 6 states have internal predecessors, (2067), 0 states have call successors, (0), 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 21:58:30,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 21:58:30,183 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 833.0) internal successors, (5831), 7 states have internal predecessors, (5831), 0 states have call successors, (0), 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 21:58:30,183 INFO L175 Difference]: Start difference. First operand has 72 places, 59 transitions, 554 flow. Second operand 6 states and 2067 transitions. [2023-11-06 21:58:30,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 105 transitions, 947 flow [2023-11-06 21:58:30,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 105 transitions, 905 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-06 21:58:30,219 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 609 flow [2023-11-06 21:58:30,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=609, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2023-11-06 21:58:30,220 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2023-11-06 21:58:30,220 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 609 flow [2023-11-06 21:58:30,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 336.5) internal successors, (2019), 6 states have internal predecessors, (2019), 0 states have call successors, (0), 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 21:58:30,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:30,221 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:30,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:58:30,222 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 21:58:30,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:30,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1204625920, now seen corresponding path program 1 times [2023-11-06 21:58:30,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:30,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744930164] [2023-11-06 21:58:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:30,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:30,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:30,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744930164] [2023-11-06 21:58:30,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744930164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:30,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:30,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:30,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89081458] [2023-11-06 21:58:30,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:30,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:30,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:30,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:30,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:31,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:58:31,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 609 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:31,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:31,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:58:31,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:32,183 INFO L124 PetriNetUnfolderBase]: 1832/2801 cut-off events. [2023-11-06 21:58:32,184 INFO L125 PetriNetUnfolderBase]: For 14828/14828 co-relation queries the response was YES. [2023-11-06 21:58:32,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12235 conditions, 2801 events. 1832/2801 cut-off events. For 14828/14828 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13628 event pairs, 432 based on Foata normal form. 8/2417 useless extension candidates. Maximal degree in co-relation 12191. Up to 983 conditions per place. [2023-11-06 21:58:32,231 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 145 selfloop transitions, 26 changer transitions 0/171 dead transitions. [2023-11-06 21:58:32,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 171 transitions, 1818 flow [2023-11-06 21:58:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:32,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:32,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2489 transitions. [2023-11-06 21:58:32,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268564568684617 [2023-11-06 21:58:32,242 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2489 transitions. [2023-11-06 21:58:32,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2489 transitions. [2023-11-06 21:58:32,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:32,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2489 transitions. [2023-11-06 21:58:32,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.57142857142856) internal successors, (2489), 7 states have internal predecessors, (2489), 0 states have call successors, (0), 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 21:58:32,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:32,263 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:32,263 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 609 flow. Second operand 7 states and 2489 transitions. [2023-11-06 21:58:32,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 171 transitions, 1818 flow [2023-11-06 21:58:32,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 171 transitions, 1683 flow, removed 30 selfloop flow, removed 3 redundant places. [2023-11-06 21:58:32,307 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 845 flow [2023-11-06 21:58:32,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=845, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-11-06 21:58:32,308 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2023-11-06 21:58:32,308 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 845 flow [2023-11-06 21:58:32,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:32,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:32,309 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:32,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:58:32,310 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 21:58:32,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:32,310 INFO L85 PathProgramCache]: Analyzing trace with hash 947523374, now seen corresponding path program 2 times [2023-11-06 21:58:32,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:32,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614276146] [2023-11-06 21:58:32,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:32,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:32,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:32,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614276146] [2023-11-06 21:58:32,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614276146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:32,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:32,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:58:32,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271071740] [2023-11-06 21:58:32,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:32,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:58:32,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:32,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:58:32,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:58:33,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:58:33,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 845 flow. Second operand has 8 states, 8 states have (on average 344.75) internal successors, (2758), 8 states have internal predecessors, (2758), 0 states have call successors, (0), 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 21:58:33,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:33,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:58:33,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:34,145 INFO L124 PetriNetUnfolderBase]: 2010/3073 cut-off events. [2023-11-06 21:58:34,145 INFO L125 PetriNetUnfolderBase]: For 15919/15919 co-relation queries the response was YES. [2023-11-06 21:58:34,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13890 conditions, 3073 events. 2010/3073 cut-off events. For 15919/15919 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15088 event pairs, 264 based on Foata normal form. 4/2633 useless extension candidates. Maximal degree in co-relation 13842. Up to 1212 conditions per place. [2023-11-06 21:58:34,182 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 105 selfloop transitions, 35 changer transitions 0/140 dead transitions. [2023-11-06 21:58:34,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 140 transitions, 1426 flow [2023-11-06 21:58:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2471 transitions. [2023-11-06 21:58:34,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237695078031212 [2023-11-06 21:58:34,192 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2471 transitions. [2023-11-06 21:58:34,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2471 transitions. [2023-11-06 21:58:34,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:34,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2471 transitions. [2023-11-06 21:58:34,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 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 21:58:34,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:34,214 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:34,214 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 845 flow. Second operand 7 states and 2471 transitions. [2023-11-06 21:58:34,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 140 transitions, 1426 flow [2023-11-06 21:58:34,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 140 transitions, 1401 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-06 21:58:34,275 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 1012 flow [2023-11-06 21:58:34,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1012, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2023-11-06 21:58:34,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2023-11-06 21:58:34,277 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 1012 flow [2023-11-06 21:58:34,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 344.75) internal successors, (2758), 8 states have internal predecessors, (2758), 0 states have call successors, (0), 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 21:58:34,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:34,278 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:34,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:58:34,278 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 21:58:34,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:34,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1460474832, now seen corresponding path program 3 times [2023-11-06 21:58:34,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:34,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464996500] [2023-11-06 21:58:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:34,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:34,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:34,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464996500] [2023-11-06 21:58:34,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464996500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:34,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:34,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:34,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951808150] [2023-11-06 21:58:34,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:34,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:34,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:35,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:58:35,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 1012 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:35,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:35,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:58:35,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:36,053 INFO L124 PetriNetUnfolderBase]: 2391/3694 cut-off events. [2023-11-06 21:58:36,054 INFO L125 PetriNetUnfolderBase]: For 28770/28770 co-relation queries the response was YES. [2023-11-06 21:58:36,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17841 conditions, 3694 events. 2391/3694 cut-off events. For 28770/28770 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 19388 event pairs, 588 based on Foata normal form. 6/3196 useless extension candidates. Maximal degree in co-relation 17789. Up to 1564 conditions per place. [2023-11-06 21:58:36,091 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 161 selfloop transitions, 42 changer transitions 8/211 dead transitions. [2023-11-06 21:58:36,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 211 transitions, 2612 flow [2023-11-06 21:58:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:36,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2485 transitions. [2023-11-06 21:58:36,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261704681872749 [2023-11-06 21:58:36,101 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2485 transitions. [2023-11-06 21:58:36,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2485 transitions. [2023-11-06 21:58:36,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:36,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2485 transitions. [2023-11-06 21:58:36,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 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 21:58:36,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:36,119 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:36,120 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 1012 flow. Second operand 7 states and 2485 transitions. [2023-11-06 21:58:36,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 211 transitions, 2612 flow [2023-11-06 21:58:36,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 211 transitions, 2503 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:36,200 INFO L231 Difference]: Finished difference. Result has 100 places, 110 transitions, 1448 flow [2023-11-06 21:58:36,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1448, PETRI_PLACES=100, PETRI_TRANSITIONS=110} [2023-11-06 21:58:36,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2023-11-06 21:58:36,202 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 110 transitions, 1448 flow [2023-11-06 21:58:36,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:36,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:36,203 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:36,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:58:36,204 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 21:58:36,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:36,204 INFO L85 PathProgramCache]: Analyzing trace with hash 118737932, now seen corresponding path program 4 times [2023-11-06 21:58:36,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:36,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661344773] [2023-11-06 21:58:36,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:36,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:36,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:36,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661344773] [2023-11-06 21:58:36,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661344773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:36,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:36,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:36,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990981630] [2023-11-06 21:58:36,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:36,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:36,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:36,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:36,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:36,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:58:37,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 110 transitions, 1448 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:37,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:37,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:58:37,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:38,221 INFO L124 PetriNetUnfolderBase]: 2740/4279 cut-off events. [2023-11-06 21:58:38,221 INFO L125 PetriNetUnfolderBase]: For 33179/33179 co-relation queries the response was YES. [2023-11-06 21:58:38,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21682 conditions, 4279 events. 2740/4279 cut-off events. For 33179/33179 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 23236 event pairs, 706 based on Foata normal form. 4/3657 useless extension candidates. Maximal degree in co-relation 21625. Up to 1697 conditions per place. [2023-11-06 21:58:38,269 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 123 selfloop transitions, 59 changer transitions 0/182 dead transitions. [2023-11-06 21:58:38,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 182 transitions, 2249 flow [2023-11-06 21:58:38,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:38,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2478 transitions. [2023-11-06 21:58:38,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249699879951981 [2023-11-06 21:58:38,277 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2478 transitions. [2023-11-06 21:58:38,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2478 transitions. [2023-11-06 21:58:38,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:38,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2478 transitions. [2023-11-06 21:58:38,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.0) internal successors, (2478), 7 states have internal predecessors, (2478), 0 states have call successors, (0), 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 21:58:38,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:38,296 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:38,296 INFO L175 Difference]: Start difference. First operand has 100 places, 110 transitions, 1448 flow. Second operand 7 states and 2478 transitions. [2023-11-06 21:58:38,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 182 transitions, 2249 flow [2023-11-06 21:58:38,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 182 transitions, 2206 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:38,414 INFO L231 Difference]: Finished difference. Result has 106 places, 117 transitions, 1674 flow [2023-11-06 21:58:38,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1674, PETRI_PLACES=106, PETRI_TRANSITIONS=117} [2023-11-06 21:58:38,415 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2023-11-06 21:58:38,415 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 117 transitions, 1674 flow [2023-11-06 21:58:38,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:38,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:38,416 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:38,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:58:38,417 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 21:58:38,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2044684660, now seen corresponding path program 1 times [2023-11-06 21:58:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:38,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462804862] [2023-11-06 21:58:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:38,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:38,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462804862] [2023-11-06 21:58:38,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462804862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:38,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:38,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:38,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31576436] [2023-11-06 21:58:38,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:38,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:38,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:38,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:38,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:39,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:58:39,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 117 transitions, 1674 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:39,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:39,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:58:39,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:40,573 INFO L124 PetriNetUnfolderBase]: 2946/4593 cut-off events. [2023-11-06 21:58:40,573 INFO L125 PetriNetUnfolderBase]: For 43255/43255 co-relation queries the response was YES. [2023-11-06 21:58:40,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24186 conditions, 4593 events. 2946/4593 cut-off events. For 43255/43255 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 25215 event pairs, 510 based on Foata normal form. 10/3925 useless extension candidates. Maximal degree in co-relation 24127. Up to 2583 conditions per place. [2023-11-06 21:58:40,620 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 138 selfloop transitions, 51 changer transitions 0/189 dead transitions. [2023-11-06 21:58:40,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 189 transitions, 2536 flow [2023-11-06 21:58:40,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:40,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2478 transitions. [2023-11-06 21:58:40,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249699879951981 [2023-11-06 21:58:40,628 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2478 transitions. [2023-11-06 21:58:40,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2478 transitions. [2023-11-06 21:58:40,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:40,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2478 transitions. [2023-11-06 21:58:40,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.0) internal successors, (2478), 7 states have internal predecessors, (2478), 0 states have call successors, (0), 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 21:58:40,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:40,645 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:40,645 INFO L175 Difference]: Start difference. First operand has 106 places, 117 transitions, 1674 flow. Second operand 7 states and 2478 transitions. [2023-11-06 21:58:40,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 189 transitions, 2536 flow [2023-11-06 21:58:40,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 189 transitions, 2372 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-11-06 21:58:40,792 INFO L231 Difference]: Finished difference. Result has 113 places, 128 transitions, 1854 flow [2023-11-06 21:58:40,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=1518, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1854, PETRI_PLACES=113, PETRI_TRANSITIONS=128} [2023-11-06 21:58:40,793 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2023-11-06 21:58:40,794 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 128 transitions, 1854 flow [2023-11-06 21:58:40,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:40,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:40,795 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:40,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:58:40,795 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 21:58:40,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:40,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1998806228, now seen corresponding path program 5 times [2023-11-06 21:58:40,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:40,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059405758] [2023-11-06 21:58:40,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:40,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:41,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:41,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059405758] [2023-11-06 21:58:41,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059405758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:41,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:41,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:41,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261745453] [2023-11-06 21:58:41,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:41,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:41,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:41,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:41,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:41,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:58:41,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 128 transitions, 1854 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:41,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:41,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:58:41,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:42,745 INFO L124 PetriNetUnfolderBase]: 2940/4587 cut-off events. [2023-11-06 21:58:42,745 INFO L125 PetriNetUnfolderBase]: For 46144/46144 co-relation queries the response was YES. [2023-11-06 21:58:42,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24032 conditions, 4587 events. 2940/4587 cut-off events. For 46144/46144 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 25541 event pairs, 624 based on Foata normal form. 6/3915 useless extension candidates. Maximal degree in co-relation 23969. Up to 2071 conditions per place. [2023-11-06 21:58:42,792 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 205 selfloop transitions, 36 changer transitions 8/249 dead transitions. [2023-11-06 21:58:42,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 249 transitions, 3666 flow [2023-11-06 21:58:42,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:42,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2476 transitions. [2023-11-06 21:58:42,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246269936546047 [2023-11-06 21:58:42,801 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2476 transitions. [2023-11-06 21:58:42,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2476 transitions. [2023-11-06 21:58:42,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:42,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2476 transitions. [2023-11-06 21:58:42,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 353.7142857142857) internal successors, (2476), 7 states have internal predecessors, (2476), 0 states have call successors, (0), 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 21:58:42,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:42,818 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:42,818 INFO L175 Difference]: Start difference. First operand has 113 places, 128 transitions, 1854 flow. Second operand 7 states and 2476 transitions. [2023-11-06 21:58:42,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 249 transitions, 3666 flow [2023-11-06 21:58:42,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 249 transitions, 3550 flow, removed 26 selfloop flow, removed 1 redundant places. [2023-11-06 21:58:43,000 INFO L231 Difference]: Finished difference. Result has 119 places, 139 transitions, 2042 flow [2023-11-06 21:58:43,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2042, PETRI_PLACES=119, PETRI_TRANSITIONS=139} [2023-11-06 21:58:43,001 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2023-11-06 21:58:43,001 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 139 transitions, 2042 flow [2023-11-06 21:58:43,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:43,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:43,002 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:43,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:58:43,003 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 21:58:43,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1080011350, now seen corresponding path program 2 times [2023-11-06 21:58:43,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:43,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528138669] [2023-11-06 21:58:43,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:43,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:43,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:43,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:43,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528138669] [2023-11-06 21:58:43,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528138669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:43,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:43,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:43,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674618549] [2023-11-06 21:58:43,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:43,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:43,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:43,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:43,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:43,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:58:43,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 139 transitions, 2042 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:43,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:43,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:58:43,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:44,944 INFO L124 PetriNetUnfolderBase]: 3217/5000 cut-off events. [2023-11-06 21:58:44,944 INFO L125 PetriNetUnfolderBase]: For 48777/48777 co-relation queries the response was YES. [2023-11-06 21:58:44,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26712 conditions, 5000 events. 3217/5000 cut-off events. For 48777/48777 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 27622 event pairs, 616 based on Foata normal form. 4/4240 useless extension candidates. Maximal degree in co-relation 26647. Up to 2566 conditions per place. [2023-11-06 21:58:44,993 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 155 selfloop transitions, 58 changer transitions 0/213 dead transitions. [2023-11-06 21:58:44,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 213 transitions, 2939 flow [2023-11-06 21:58:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:44,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:45,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2484 transitions. [2023-11-06 21:58:45,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259989710169782 [2023-11-06 21:58:45,001 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2484 transitions. [2023-11-06 21:58:45,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2484 transitions. [2023-11-06 21:58:45,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:45,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2484 transitions. [2023-11-06 21:58:45,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.85714285714283) internal successors, (2484), 7 states have internal predecessors, (2484), 0 states have call successors, (0), 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 21:58:45,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:45,016 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:45,016 INFO L175 Difference]: Start difference. First operand has 119 places, 139 transitions, 2042 flow. Second operand 7 states and 2484 transitions. [2023-11-06 21:58:45,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 213 transitions, 2939 flow [2023-11-06 21:58:45,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 213 transitions, 2828 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-11-06 21:58:45,235 INFO L231 Difference]: Finished difference. Result has 125 places, 147 transitions, 2249 flow [2023-11-06 21:58:45,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2249, PETRI_PLACES=125, PETRI_TRANSITIONS=147} [2023-11-06 21:58:45,236 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2023-11-06 21:58:45,236 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 147 transitions, 2249 flow [2023-11-06 21:58:45,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:45,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:45,237 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:45,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 21:58:45,238 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 21:58:45,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:45,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1466379694, now seen corresponding path program 6 times [2023-11-06 21:58:45,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:45,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346288398] [2023-11-06 21:58:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:45,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:45,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:45,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346288398] [2023-11-06 21:58:45,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346288398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:45,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:45,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:58:45,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307100527] [2023-11-06 21:58:45,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:45,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 21:58:45,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:45,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 21:58:45,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:58:46,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 833 [2023-11-06 21:58:46,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 147 transitions, 2249 flow. Second operand has 9 states, 9 states have (on average 337.44444444444446) internal successors, (3037), 9 states have internal predecessors, (3037), 0 states have call successors, (0), 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 21:58:46,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:46,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 833 [2023-11-06 21:58:46,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:48,245 INFO L124 PetriNetUnfolderBase]: 3217/4999 cut-off events. [2023-11-06 21:58:48,245 INFO L125 PetriNetUnfolderBase]: For 56603/56603 co-relation queries the response was YES. [2023-11-06 21:58:48,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27130 conditions, 4999 events. 3217/4999 cut-off events. For 56603/56603 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 28129 event pairs, 624 based on Foata normal form. 1/4236 useless extension candidates. Maximal degree in co-relation 27061. Up to 2357 conditions per place. [2023-11-06 21:58:48,293 INFO L140 encePairwiseOnDemand]: 824/833 looper letters, 221 selfloop transitions, 39 changer transitions 9/269 dead transitions. [2023-11-06 21:58:48,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 269 transitions, 4053 flow [2023-11-06 21:58:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:58:48,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 21:58:48,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2776 transitions. [2023-11-06 21:58:48,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41656662665066024 [2023-11-06 21:58:48,299 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2776 transitions. [2023-11-06 21:58:48,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2776 transitions. [2023-11-06 21:58:48,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:48,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2776 transitions. [2023-11-06 21:58:48,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 347.0) internal successors, (2776), 8 states have internal predecessors, (2776), 0 states have call successors, (0), 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 21:58:48,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 833.0) internal successors, (7497), 9 states have internal predecessors, (7497), 0 states have call successors, (0), 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 21:58:48,315 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 833.0) internal successors, (7497), 9 states have internal predecessors, (7497), 0 states have call successors, (0), 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 21:58:48,315 INFO L175 Difference]: Start difference. First operand has 125 places, 147 transitions, 2249 flow. Second operand 8 states and 2776 transitions. [2023-11-06 21:58:48,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 269 transitions, 4053 flow [2023-11-06 21:58:48,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 269 transitions, 3931 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:48,525 INFO L231 Difference]: Finished difference. Result has 131 places, 146 transitions, 2230 flow [2023-11-06 21:58:48,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2230, PETRI_PLACES=131, PETRI_TRANSITIONS=146} [2023-11-06 21:58:48,526 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2023-11-06 21:58:48,526 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 146 transitions, 2230 flow [2023-11-06 21:58:48,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 337.44444444444446) internal successors, (3037), 9 states have internal predecessors, (3037), 0 states have call successors, (0), 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 21:58:48,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:48,527 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:48,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 21:58:48,527 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 21:58:48,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:48,528 INFO L85 PathProgramCache]: Analyzing trace with hash -984480154, now seen corresponding path program 7 times [2023-11-06 21:58:48,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:48,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235224120] [2023-11-06 21:58:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:48,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235224120] [2023-11-06 21:58:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235224120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:48,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:48,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:48,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194514597] [2023-11-06 21:58:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:48,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:48,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:48,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:49,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:58:49,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 146 transitions, 2230 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:49,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:49,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:58:49,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:50,500 INFO L124 PetriNetUnfolderBase]: 3291/5140 cut-off events. [2023-11-06 21:58:50,500 INFO L125 PetriNetUnfolderBase]: For 55552/55552 co-relation queries the response was YES. [2023-11-06 21:58:50,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28152 conditions, 5140 events. 3291/5140 cut-off events. For 55552/55552 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 28895 event pairs, 872 based on Foata normal form. 4/4346 useless extension candidates. Maximal degree in co-relation 28082. Up to 2435 conditions per place. [2023-11-06 21:58:50,562 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 150 selfloop transitions, 68 changer transitions 0/218 dead transitions. [2023-11-06 21:58:50,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 218 transitions, 3195 flow [2023-11-06 21:58:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2472 transitions. [2023-11-06 21:58:50,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239410049734179 [2023-11-06 21:58:50,567 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2472 transitions. [2023-11-06 21:58:50,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2472 transitions. [2023-11-06 21:58:50,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:50,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2472 transitions. [2023-11-06 21:58:50,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 353.14285714285717) internal successors, (2472), 7 states have internal predecessors, (2472), 0 states have call successors, (0), 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 21:58:50,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:50,581 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:50,581 INFO L175 Difference]: Start difference. First operand has 131 places, 146 transitions, 2230 flow. Second operand 7 states and 2472 transitions. [2023-11-06 21:58:50,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 218 transitions, 3195 flow [2023-11-06 21:58:50,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 218 transitions, 3070 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-06 21:58:50,839 INFO L231 Difference]: Finished difference. Result has 134 places, 148 transitions, 2345 flow [2023-11-06 21:58:50,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=2167, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2345, PETRI_PLACES=134, PETRI_TRANSITIONS=148} [2023-11-06 21:58:50,840 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2023-11-06 21:58:50,840 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 148 transitions, 2345 flow [2023-11-06 21:58:50,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:50,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:50,841 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:50,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 21:58:50,841 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 21:58:50,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:50,842 INFO L85 PathProgramCache]: Analyzing trace with hash 733361084, now seen corresponding path program 3 times [2023-11-06 21:58:50,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:50,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730940914] [2023-11-06 21:58:50,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:50,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:51,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:51,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730940914] [2023-11-06 21:58:51,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730940914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:51,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:51,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:58:51,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749201459] [2023-11-06 21:58:51,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:51,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:58:51,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:51,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:58:51,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:58:51,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:58:51,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 148 transitions, 2345 flow. Second operand has 8 states, 8 states have (on average 344.75) internal successors, (2758), 8 states have internal predecessors, (2758), 0 states have call successors, (0), 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 21:58:51,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:51,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:58:51,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:53,336 INFO L124 PetriNetUnfolderBase]: 3833/5988 cut-off events. [2023-11-06 21:58:53,337 INFO L125 PetriNetUnfolderBase]: For 68555/68555 co-relation queries the response was YES. [2023-11-06 21:58:53,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32820 conditions, 5988 events. 3833/5988 cut-off events. For 68555/68555 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 34752 event pairs, 996 based on Foata normal form. 10/5032 useless extension candidates. Maximal degree in co-relation 32749. Up to 1908 conditions per place. [2023-11-06 21:58:53,492 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 196 selfloop transitions, 63 changer transitions 0/259 dead transitions. [2023-11-06 21:58:53,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 259 transitions, 3963 flow [2023-11-06 21:58:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2492 transitions. [2023-11-06 21:58:53,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42737094837935174 [2023-11-06 21:58:53,497 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2492 transitions. [2023-11-06 21:58:53,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2492 transitions. [2023-11-06 21:58:53,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:53,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2492 transitions. [2023-11-06 21:58:53,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 0 states have call successors, (0), 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 21:58:53,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:53,508 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:53,508 INFO L175 Difference]: Start difference. First operand has 134 places, 148 transitions, 2345 flow. Second operand 7 states and 2492 transitions. [2023-11-06 21:58:53,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 259 transitions, 3963 flow [2023-11-06 21:58:53,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 259 transitions, 3773 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-06 21:58:53,785 INFO L231 Difference]: Finished difference. Result has 139 places, 154 transitions, 2458 flow [2023-11-06 21:58:53,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2458, PETRI_PLACES=139, PETRI_TRANSITIONS=154} [2023-11-06 21:58:53,786 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2023-11-06 21:58:53,786 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 154 transitions, 2458 flow [2023-11-06 21:58:53,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 344.75) internal successors, (2758), 8 states have internal predecessors, (2758), 0 states have call successors, (0), 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 21:58:53,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:53,787 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:53,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 21:58:53,787 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 21:58:53,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:53,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1443345050, now seen corresponding path program 8 times [2023-11-06 21:58:53,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:53,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165846836] [2023-11-06 21:58:53,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:53,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:54,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:54,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165846836] [2023-11-06 21:58:54,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165846836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:54,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:54,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:54,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241785405] [2023-11-06 21:58:54,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:54,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:54,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:54,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:54,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:54,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:58:54,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 154 transitions, 2458 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:54,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:54,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:58:54,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:56,099 INFO L124 PetriNetUnfolderBase]: 3821/5976 cut-off events. [2023-11-06 21:58:56,099 INFO L125 PetriNetUnfolderBase]: For 74196/74196 co-relation queries the response was YES. [2023-11-06 21:58:56,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33205 conditions, 5976 events. 3821/5976 cut-off events. For 74196/74196 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 34601 event pairs, 1160 based on Foata normal form. 6/5022 useless extension candidates. Maximal degree in co-relation 33131. Up to 3283 conditions per place. [2023-11-06 21:58:56,156 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 155 selfloop transitions, 69 changer transitions 0/224 dead transitions. [2023-11-06 21:58:56,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 224 transitions, 3402 flow [2023-11-06 21:58:56,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:56,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2472 transitions. [2023-11-06 21:58:56,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239410049734179 [2023-11-06 21:58:56,164 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2472 transitions. [2023-11-06 21:58:56,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2472 transitions. [2023-11-06 21:58:56,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:56,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2472 transitions. [2023-11-06 21:58:56,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 353.14285714285717) internal successors, (2472), 7 states have internal predecessors, (2472), 0 states have call successors, (0), 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 21:58:56,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:56,180 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:56,180 INFO L175 Difference]: Start difference. First operand has 139 places, 154 transitions, 2458 flow. Second operand 7 states and 2472 transitions. [2023-11-06 21:58:56,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 224 transitions, 3402 flow [2023-11-06 21:58:56,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 224 transitions, 3212 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-06 21:58:56,517 INFO L231 Difference]: Finished difference. Result has 145 places, 157 transitions, 2518 flow [2023-11-06 21:58:56,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2518, PETRI_PLACES=145, PETRI_TRANSITIONS=157} [2023-11-06 21:58:56,527 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2023-11-06 21:58:56,527 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 157 transitions, 2518 flow [2023-11-06 21:58:56,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:56,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:56,528 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:56,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 21:58:56,528 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 21:58:56,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash -719516976, now seen corresponding path program 9 times [2023-11-06 21:58:56,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:56,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964543381] [2023-11-06 21:58:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:56,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:56,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:56,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964543381] [2023-11-06 21:58:56,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964543381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:56,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:56,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:56,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333383369] [2023-11-06 21:58:56,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:56,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:56,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:56,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:57,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 833 [2023-11-06 21:58:57,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 157 transitions, 2518 flow. Second operand has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:58:57,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:57,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 833 [2023-11-06 21:58:57,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:58,782 INFO L124 PetriNetUnfolderBase]: 3805/5946 cut-off events. [2023-11-06 21:58:58,783 INFO L125 PetriNetUnfolderBase]: For 77416/77416 co-relation queries the response was YES. [2023-11-06 21:58:58,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33598 conditions, 5946 events. 3805/5946 cut-off events. For 77416/77416 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 34783 event pairs, 734 based on Foata normal form. 6/5482 useless extension candidates. Maximal degree in co-relation 33521. Up to 3111 conditions per place. [2023-11-06 21:58:58,842 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 213 selfloop transitions, 46 changer transitions 6/265 dead transitions. [2023-11-06 21:58:58,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 265 transitions, 4278 flow [2023-11-06 21:58:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:58,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2461 transitions. [2023-11-06 21:58:58,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42205453610015436 [2023-11-06 21:58:58,847 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2461 transitions. [2023-11-06 21:58:58,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2461 transitions. [2023-11-06 21:58:58,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:58,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2461 transitions. [2023-11-06 21:58:58,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 351.57142857142856) internal successors, (2461), 7 states have internal predecessors, (2461), 0 states have call successors, (0), 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 21:58:58,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:58,859 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:58:58,860 INFO L175 Difference]: Start difference. First operand has 145 places, 157 transitions, 2518 flow. Second operand 7 states and 2461 transitions. [2023-11-06 21:58:58,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 265 transitions, 4278 flow [2023-11-06 21:58:59,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 265 transitions, 4067 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-06 21:58:59,160 INFO L231 Difference]: Finished difference. Result has 148 places, 155 transitions, 2416 flow [2023-11-06 21:58:59,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2416, PETRI_PLACES=148, PETRI_TRANSITIONS=155} [2023-11-06 21:58:59,161 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2023-11-06 21:58:59,161 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 155 transitions, 2416 flow [2023-11-06 21:58:59,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:58:59,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:59,161 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:59,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 21:58:59,162 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 21:58:59,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:59,162 INFO L85 PathProgramCache]: Analyzing trace with hash -109078240, now seen corresponding path program 10 times [2023-11-06 21:58:59,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:59,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837325598] [2023-11-06 21:58:59,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:59,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:59,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:59,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837325598] [2023-11-06 21:58:59,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837325598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:59,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:59,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:59,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430326693] [2023-11-06 21:58:59,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:59,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:59,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:59,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:59,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:59,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:58:59,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 155 transitions, 2416 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:58:59,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:59,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:58:59,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:01,486 INFO L124 PetriNetUnfolderBase]: 3902/6127 cut-off events. [2023-11-06 21:59:01,486 INFO L125 PetriNetUnfolderBase]: For 75361/75361 co-relation queries the response was YES. [2023-11-06 21:59:01,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34360 conditions, 6127 events. 3902/6127 cut-off events. For 75361/75361 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 35869 event pairs, 1192 based on Foata normal form. 4/5661 useless extension candidates. Maximal degree in co-relation 34283. Up to 3283 conditions per place. [2023-11-06 21:59:01,538 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 153 selfloop transitions, 75 changer transitions 0/228 dead transitions. [2023-11-06 21:59:01,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 228 transitions, 3424 flow [2023-11-06 21:59:01,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:01,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2023-11-06 21:59:01,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42514148516549477 [2023-11-06 21:59:01,542 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2023-11-06 21:59:01,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2023-11-06 21:59:01,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:01,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2023-11-06 21:59:01,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 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 21:59:01,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:01,553 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:01,554 INFO L175 Difference]: Start difference. First operand has 148 places, 155 transitions, 2416 flow. Second operand 7 states and 2479 transitions. [2023-11-06 21:59:01,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 228 transitions, 3424 flow [2023-11-06 21:59:01,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 228 transitions, 3280 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-06 21:59:01,932 INFO L231 Difference]: Finished difference. Result has 152 places, 161 transitions, 2623 flow [2023-11-06 21:59:01,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2623, PETRI_PLACES=152, PETRI_TRANSITIONS=161} [2023-11-06 21:59:01,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2023-11-06 21:59:01,933 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 161 transitions, 2623 flow [2023-11-06 21:59:01,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:01,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:01,934 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:01,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 21:59:01,934 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 21:59:01,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1358359140, now seen corresponding path program 4 times [2023-11-06 21:59:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998424078] [2023-11-06 21:59:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:02,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:02,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998424078] [2023-11-06 21:59:02,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998424078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:02,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:02,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671428517] [2023-11-06 21:59:02,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:02,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:02,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:02,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:02,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:02,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:59:02,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 161 transitions, 2623 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:02,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:02,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:59:02,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:04,234 INFO L124 PetriNetUnfolderBase]: 3892/6117 cut-off events. [2023-11-06 21:59:04,234 INFO L125 PetriNetUnfolderBase]: For 80210/80210 co-relation queries the response was YES. [2023-11-06 21:59:04,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34622 conditions, 6117 events. 3892/6117 cut-off events. For 80210/80210 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 35759 event pairs, 1373 based on Foata normal form. 10/5657 useless extension candidates. Maximal degree in co-relation 34541. Up to 4066 conditions per place. [2023-11-06 21:59:04,299 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 192 selfloop transitions, 73 changer transitions 1/266 dead transitions. [2023-11-06 21:59:04,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 266 transitions, 4502 flow [2023-11-06 21:59:04,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:04,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2473 transitions. [2023-11-06 21:59:04,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42411250214371465 [2023-11-06 21:59:04,303 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2473 transitions. [2023-11-06 21:59:04,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2473 transitions. [2023-11-06 21:59:04,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:04,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2473 transitions. [2023-11-06 21:59:04,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 353.2857142857143) internal successors, (2473), 7 states have internal predecessors, (2473), 0 states have call successors, (0), 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 21:59:04,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:04,314 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:04,314 INFO L175 Difference]: Start difference. First operand has 152 places, 161 transitions, 2623 flow. Second operand 7 states and 2473 transitions. [2023-11-06 21:59:04,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 266 transitions, 4502 flow [2023-11-06 21:59:04,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 266 transitions, 4313 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:04,766 INFO L231 Difference]: Finished difference. Result has 161 places, 194 transitions, 3319 flow [2023-11-06 21:59:04,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3319, PETRI_PLACES=161, PETRI_TRANSITIONS=194} [2023-11-06 21:59:04,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2023-11-06 21:59:04,767 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 194 transitions, 3319 flow [2023-11-06 21:59:04,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:04,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:04,767 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:04,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 21:59:04,768 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 21:59:04,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1010191390, now seen corresponding path program 11 times [2023-11-06 21:59:04,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:04,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848551528] [2023-11-06 21:59:04,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:04,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:05,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848551528] [2023-11-06 21:59:05,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848551528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:05,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:05,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:05,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348445751] [2023-11-06 21:59:05,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:05,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:05,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:05,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:05,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:05,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 833 [2023-11-06 21:59:05,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 194 transitions, 3319 flow. Second operand has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:59:05,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:05,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 833 [2023-11-06 21:59:05,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:07,274 INFO L124 PetriNetUnfolderBase]: 3970/6305 cut-off events. [2023-11-06 21:59:07,274 INFO L125 PetriNetUnfolderBase]: For 88223/88223 co-relation queries the response was YES. [2023-11-06 21:59:07,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36818 conditions, 6305 events. 3970/6305 cut-off events. For 88223/88223 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 37711 event pairs, 1228 based on Foata normal form. 6/5841 useless extension candidates. Maximal degree in co-relation 36732. Up to 3273 conditions per place. [2023-11-06 21:59:07,346 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 191 selfloop transitions, 98 changer transitions 8/297 dead transitions. [2023-11-06 21:59:07,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 297 transitions, 5162 flow [2023-11-06 21:59:07,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:07,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2463 transitions. [2023-11-06 21:59:07,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42239753044074774 [2023-11-06 21:59:07,350 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2463 transitions. [2023-11-06 21:59:07,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2463 transitions. [2023-11-06 21:59:07,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:07,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2463 transitions. [2023-11-06 21:59:07,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 351.85714285714283) internal successors, (2463), 7 states have internal predecessors, (2463), 0 states have call successors, (0), 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 21:59:07,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:07,362 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:07,362 INFO L175 Difference]: Start difference. First operand has 161 places, 194 transitions, 3319 flow. Second operand 7 states and 2463 transitions. [2023-11-06 21:59:07,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 297 transitions, 5162 flow [2023-11-06 21:59:07,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 297 transitions, 4966 flow, removed 62 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:07,828 INFO L231 Difference]: Finished difference. Result has 171 places, 223 transitions, 4032 flow [2023-11-06 21:59:07,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4032, PETRI_PLACES=171, PETRI_TRANSITIONS=223} [2023-11-06 21:59:07,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2023-11-06 21:59:07,829 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 223 transitions, 4032 flow [2023-11-06 21:59:07,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:59:07,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:07,830 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:07,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-06 21:59:07,830 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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 21:59:07,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:07,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1323129116, now seen corresponding path program 12 times [2023-11-06 21:59:07,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:07,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037004935] [2023-11-06 21:59:07,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:07,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:08,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:08,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037004935] [2023-11-06 21:59:08,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037004935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:08,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:08,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:59:08,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029688957] [2023-11-06 21:59:08,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:08,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:59:08,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:59:08,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:59:08,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:59:08,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 223 transitions, 4032 flow. Second operand has 8 states, 8 states have (on average 344.75) internal successors, (2758), 8 states have internal predecessors, (2758), 0 states have call successors, (0), 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 21:59:08,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:08,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:59:08,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:10,478 INFO L124 PetriNetUnfolderBase]: 4501/7152 cut-off events. [2023-11-06 21:59:10,478 INFO L125 PetriNetUnfolderBase]: For 97161/97161 co-relation queries the response was YES. [2023-11-06 21:59:10,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41563 conditions, 7152 events. 4501/7152 cut-off events. For 97161/97161 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 44018 event pairs, 640 based on Foata normal form. 8/6638 useless extension candidates. Maximal degree in co-relation 41472. Up to 3510 conditions per place. [2023-11-06 21:59:10,574 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 240 selfloop transitions, 74 changer transitions 3/317 dead transitions. [2023-11-06 21:59:10,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 317 transitions, 5856 flow [2023-11-06 21:59:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:10,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:10,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2471 transitions. [2023-11-06 21:59:10,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237695078031212 [2023-11-06 21:59:10,578 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2471 transitions. [2023-11-06 21:59:10,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2471 transitions. [2023-11-06 21:59:10,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:10,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2471 transitions. [2023-11-06 21:59:10,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 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 21:59:10,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:10,586 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:10,586 INFO L175 Difference]: Start difference. First operand has 171 places, 223 transitions, 4032 flow. Second operand 7 states and 2471 transitions. [2023-11-06 21:59:10,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 317 transitions, 5856 flow [2023-11-06 21:59:11,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 317 transitions, 5580 flow, removed 96 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:11,290 INFO L231 Difference]: Finished difference. Result has 178 places, 239 transitions, 4401 flow [2023-11-06 21:59:11,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=3843, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4401, PETRI_PLACES=178, PETRI_TRANSITIONS=239} [2023-11-06 21:59:11,291 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2023-11-06 21:59:11,291 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 239 transitions, 4401 flow [2023-11-06 21:59:11,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 344.75) internal successors, (2758), 8 states have internal predecessors, (2758), 0 states have call successors, (0), 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 21:59:11,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:11,291 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:11,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 21:59:11,292 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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 21:59:11,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:11,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1560871940, now seen corresponding path program 5 times [2023-11-06 21:59:11,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:11,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951497393] [2023-11-06 21:59:11,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:11,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:11,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:11,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951497393] [2023-11-06 21:59:11,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951497393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:11,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:11,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:11,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162141099] [2023-11-06 21:59:11,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:11,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:11,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:11,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:11,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:11,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 833 [2023-11-06 21:59:11,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 239 transitions, 4401 flow. Second operand has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:59:11,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:11,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 833 [2023-11-06 21:59:11,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:13,896 INFO L124 PetriNetUnfolderBase]: 4752/7585 cut-off events. [2023-11-06 21:59:13,896 INFO L125 PetriNetUnfolderBase]: For 114620/114620 co-relation queries the response was YES. [2023-11-06 21:59:13,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44514 conditions, 7585 events. 4752/7585 cut-off events. For 114620/114620 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 47471 event pairs, 798 based on Foata normal form. 10/7033 useless extension candidates. Maximal degree in co-relation 44420. Up to 4318 conditions per place. [2023-11-06 21:59:14,000 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 241 selfloop transitions, 98 changer transitions 0/339 dead transitions. [2023-11-06 21:59:14,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 339 transitions, 6374 flow [2023-11-06 21:59:14,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:14,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2466 transitions. [2023-11-06 21:59:14,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229120219516378 [2023-11-06 21:59:14,004 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2466 transitions. [2023-11-06 21:59:14,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2466 transitions. [2023-11-06 21:59:14,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:14,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2466 transitions. [2023-11-06 21:59:14,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 352.2857142857143) internal successors, (2466), 7 states have internal predecessors, (2466), 0 states have call successors, (0), 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 21:59:14,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:14,013 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:14,014 INFO L175 Difference]: Start difference. First operand has 178 places, 239 transitions, 4401 flow. Second operand 7 states and 2466 transitions. [2023-11-06 21:59:14,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 339 transitions, 6374 flow [2023-11-06 21:59:14,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 339 transitions, 6210 flow, removed 34 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:14,929 INFO L231 Difference]: Finished difference. Result has 186 places, 260 transitions, 5103 flow [2023-11-06 21:59:14,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=4268, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5103, PETRI_PLACES=186, PETRI_TRANSITIONS=260} [2023-11-06 21:59:14,930 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2023-11-06 21:59:14,930 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 260 transitions, 5103 flow [2023-11-06 21:59:14,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:59:14,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:14,931 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:14,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-06 21:59:14,931 INFO L420 AbstractCegarLoop]: === Iteration 27 === 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 21:59:14,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1076513392, now seen corresponding path program 13 times [2023-11-06 21:59:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:14,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139080454] [2023-11-06 21:59:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:14,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:15,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:15,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139080454] [2023-11-06 21:59:15,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139080454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:15,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:15,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:15,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536999618] [2023-11-06 21:59:15,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:15,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:15,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:15,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:15,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:15,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 833 [2023-11-06 21:59:15,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 260 transitions, 5103 flow. Second operand has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:59:15,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:15,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 833 [2023-11-06 21:59:15,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:17,909 INFO L124 PetriNetUnfolderBase]: 5120/8251 cut-off events. [2023-11-06 21:59:17,909 INFO L125 PetriNetUnfolderBase]: For 123094/123094 co-relation queries the response was YES. [2023-11-06 21:59:18,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48014 conditions, 8251 events. 5120/8251 cut-off events. For 123094/123094 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 52941 event pairs, 966 based on Foata normal form. 16/7665 useless extension candidates. Maximal degree in co-relation 47916. Up to 3220 conditions per place. [2023-11-06 21:59:18,067 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 304 selfloop transitions, 87 changer transitions 0/391 dead transitions. [2023-11-06 21:59:18,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 391 transitions, 7554 flow [2023-11-06 21:59:18,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2471 transitions. [2023-11-06 21:59:18,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237695078031212 [2023-11-06 21:59:18,073 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2471 transitions. [2023-11-06 21:59:18,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2471 transitions. [2023-11-06 21:59:18,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:18,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2471 transitions. [2023-11-06 21:59:18,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 353.0) internal successors, (2471), 7 states have internal predecessors, (2471), 0 states have call successors, (0), 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 21:59:18,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:18,085 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:18,085 INFO L175 Difference]: Start difference. First operand has 186 places, 260 transitions, 5103 flow. Second operand 7 states and 2471 transitions. [2023-11-06 21:59:18,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 391 transitions, 7554 flow [2023-11-06 21:59:18,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 391 transitions, 7403 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:18,886 INFO L231 Difference]: Finished difference. Result has 194 places, 271 transitions, 5439 flow [2023-11-06 21:59:18,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=4956, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5439, PETRI_PLACES=194, PETRI_TRANSITIONS=271} [2023-11-06 21:59:18,886 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2023-11-06 21:59:18,886 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 271 transitions, 5439 flow [2023-11-06 21:59:18,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:59:18,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:18,887 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:18,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-06 21:59:18,887 INFO L420 AbstractCegarLoop]: === Iteration 28 === 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 21:59:18,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:18,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1680073184, now seen corresponding path program 6 times [2023-11-06 21:59:18,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:18,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016836317] [2023-11-06 21:59:18,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:18,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:19,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:19,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016836317] [2023-11-06 21:59:19,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016836317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:19,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:19,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:19,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406584045] [2023-11-06 21:59:19,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:19,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:19,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:19,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:19,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:19,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 833 [2023-11-06 21:59:19,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 271 transitions, 5439 flow. Second operand has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:59:19,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:19,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 833 [2023-11-06 21:59:19,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:21,818 INFO L124 PetriNetUnfolderBase]: 5116/8247 cut-off events. [2023-11-06 21:59:21,818 INFO L125 PetriNetUnfolderBase]: For 129534/129534 co-relation queries the response was YES. [2023-11-06 21:59:21,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49604 conditions, 8247 events. 5116/8247 cut-off events. For 129534/129534 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 53090 event pairs, 942 based on Foata normal form. 4/7649 useless extension candidates. Maximal degree in co-relation 49502. Up to 4984 conditions per place. [2023-11-06 21:59:21,906 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 240 selfloop transitions, 101 changer transitions 4/345 dead transitions. [2023-11-06 21:59:21,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 345 transitions, 6861 flow [2023-11-06 21:59:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2458 transitions. [2023-11-06 21:59:21,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42154004458926425 [2023-11-06 21:59:21,911 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2458 transitions. [2023-11-06 21:59:21,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2458 transitions. [2023-11-06 21:59:21,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:21,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2458 transitions. [2023-11-06 21:59:21,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 351.14285714285717) internal successors, (2458), 7 states have internal predecessors, (2458), 0 states have call successors, (0), 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 21:59:21,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:21,922 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:21,923 INFO L175 Difference]: Start difference. First operand has 194 places, 271 transitions, 5439 flow. Second operand 7 states and 2458 transitions. [2023-11-06 21:59:21,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 345 transitions, 6861 flow [2023-11-06 21:59:22,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 345 transitions, 6687 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-11-06 21:59:22,885 INFO L231 Difference]: Finished difference. Result has 197 places, 273 transitions, 5500 flow [2023-11-06 21:59:22,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=5233, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5500, PETRI_PLACES=197, PETRI_TRANSITIONS=273} [2023-11-06 21:59:22,886 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2023-11-06 21:59:22,887 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 273 transitions, 5500 flow [2023-11-06 21:59:22,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:59:22,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:22,887 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:22,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-06 21:59:22,888 INFO L420 AbstractCegarLoop]: === Iteration 29 === 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 21:59:22,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:22,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2107014080, now seen corresponding path program 14 times [2023-11-06 21:59:22,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:22,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84582307] [2023-11-06 21:59:22,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:22,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:23,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:23,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84582307] [2023-11-06 21:59:23,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84582307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:23,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:23,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:23,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074235532] [2023-11-06 21:59:23,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:23,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:23,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:23,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:23,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:23,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 833 [2023-11-06 21:59:23,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 273 transitions, 5500 flow. Second operand has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:59:23,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:23,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 833 [2023-11-06 21:59:23,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:25,833 INFO L124 PetriNetUnfolderBase]: 5129/8278 cut-off events. [2023-11-06 21:59:25,833 INFO L125 PetriNetUnfolderBase]: For 133723/133723 co-relation queries the response was YES. [2023-11-06 21:59:25,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50327 conditions, 8278 events. 5129/8278 cut-off events. For 133723/133723 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 53385 event pairs, 794 based on Foata normal form. 16/7692 useless extension candidates. Maximal degree in co-relation 50226. Up to 4188 conditions per place. [2023-11-06 21:59:26,127 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 268 selfloop transitions, 93 changer transitions 0/361 dead transitions. [2023-11-06 21:59:26,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 361 transitions, 7111 flow [2023-11-06 21:59:26,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:26,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2468 transitions. [2023-11-06 21:59:26,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42325501629223117 [2023-11-06 21:59:26,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2468 transitions. [2023-11-06 21:59:26,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2468 transitions. [2023-11-06 21:59:26,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:26,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2468 transitions. [2023-11-06 21:59:26,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 352.57142857142856) internal successors, (2468), 7 states have internal predecessors, (2468), 0 states have call successors, (0), 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 21:59:26,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:26,137 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:26,137 INFO L175 Difference]: Start difference. First operand has 197 places, 273 transitions, 5500 flow. Second operand 7 states and 2468 transitions. [2023-11-06 21:59:26,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 361 transitions, 7111 flow [2023-11-06 21:59:26,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 361 transitions, 6936 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 21:59:27,006 INFO L231 Difference]: Finished difference. Result has 201 places, 276 transitions, 5594 flow [2023-11-06 21:59:27,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=5325, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5594, PETRI_PLACES=201, PETRI_TRANSITIONS=276} [2023-11-06 21:59:27,007 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2023-11-06 21:59:27,007 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 276 transitions, 5594 flow [2023-11-06 21:59:27,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:59:27,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:27,008 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:27,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-06 21:59:27,008 INFO L420 AbstractCegarLoop]: === Iteration 30 === 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 21:59:27,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:27,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1809177398, now seen corresponding path program 15 times [2023-11-06 21:59:27,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:27,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524260654] [2023-11-06 21:59:27,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:27,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:27,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:27,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524260654] [2023-11-06 21:59:27,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524260654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:27,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:27,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:27,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542808109] [2023-11-06 21:59:27,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:27,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:27,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:27,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:27,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:27,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 833 [2023-11-06 21:59:27,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 276 transitions, 5594 flow. Second operand has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:59:27,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:27,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 833 [2023-11-06 21:59:27,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:30,202 INFO L124 PetriNetUnfolderBase]: 5097/8218 cut-off events. [2023-11-06 21:59:30,202 INFO L125 PetriNetUnfolderBase]: For 136147/136147 co-relation queries the response was YES. [2023-11-06 21:59:30,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50881 conditions, 8218 events. 5097/8218 cut-off events. For 136147/136147 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 52866 event pairs, 794 based on Foata normal form. 12/7628 useless extension candidates. Maximal degree in co-relation 50778. Up to 4188 conditions per place. [2023-11-06 21:59:30,319 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 264 selfloop transitions, 91 changer transitions 1/356 dead transitions. [2023-11-06 21:59:30,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 356 transitions, 7107 flow [2023-11-06 21:59:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:30,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2462 transitions. [2023-11-06 21:59:30,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42222603327045105 [2023-11-06 21:59:30,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2462 transitions. [2023-11-06 21:59:30,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2462 transitions. [2023-11-06 21:59:30,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:30,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2462 transitions. [2023-11-06 21:59:30,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 351.7142857142857) internal successors, (2462), 7 states have internal predecessors, (2462), 0 states have call successors, (0), 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 21:59:30,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:30,335 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:30,336 INFO L175 Difference]: Start difference. First operand has 201 places, 276 transitions, 5594 flow. Second operand 7 states and 2462 transitions. [2023-11-06 21:59:30,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 356 transitions, 7107 flow [2023-11-06 21:59:31,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 356 transitions, 6909 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-06 21:59:31,370 INFO L231 Difference]: Finished difference. Result has 205 places, 276 transitions, 5588 flow [2023-11-06 21:59:31,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=5370, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5588, PETRI_PLACES=205, PETRI_TRANSITIONS=276} [2023-11-06 21:59:31,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 175 predicate places. [2023-11-06 21:59:31,371 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 276 transitions, 5588 flow [2023-11-06 21:59:31,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 21:59:31,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:31,372 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:31,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-06 21:59:31,373 INFO L420 AbstractCegarLoop]: === Iteration 31 === 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 21:59:31,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:31,373 INFO L85 PathProgramCache]: Analyzing trace with hash -921103178, now seen corresponding path program 16 times [2023-11-06 21:59:31,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:31,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411800814] [2023-11-06 21:59:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:31,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:31,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:31,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411800814] [2023-11-06 21:59:31,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411800814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:31,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:31,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 21:59:31,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589746733] [2023-11-06 21:59:31,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:31,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:59:31,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:31,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:59:31,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:59:32,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:59:32,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 276 transitions, 5588 flow. Second operand has 8 states, 8 states have (on average 344.75) internal successors, (2758), 8 states have internal predecessors, (2758), 0 states have call successors, (0), 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 21:59:32,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:32,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:59:32,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:34,432 INFO L124 PetriNetUnfolderBase]: 5082/8183 cut-off events. [2023-11-06 21:59:34,432 INFO L125 PetriNetUnfolderBase]: For 134391/134391 co-relation queries the response was YES. [2023-11-06 21:59:34,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50674 conditions, 8183 events. 5082/8183 cut-off events. For 134391/134391 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 52528 event pairs, 786 based on Foata normal form. 8/7589 useless extension candidates. Maximal degree in co-relation 50570. Up to 4188 conditions per place. [2023-11-06 21:59:34,541 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 256 selfloop transitions, 99 changer transitions 0/355 dead transitions. [2023-11-06 21:59:34,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 355 transitions, 7064 flow [2023-11-06 21:59:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2023-11-06 21:59:34,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42514148516549477 [2023-11-06 21:59:34,545 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2023-11-06 21:59:34,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2023-11-06 21:59:34,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:34,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2023-11-06 21:59:34,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 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 21:59:34,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:34,551 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:34,551 INFO L175 Difference]: Start difference. First operand has 205 places, 276 transitions, 5588 flow. Second operand 7 states and 2479 transitions. [2023-11-06 21:59:34,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 355 transitions, 7064 flow [2023-11-06 21:59:35,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 355 transitions, 6874 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-06 21:59:35,483 INFO L231 Difference]: Finished difference. Result has 204 places, 275 transitions, 5573 flow [2023-11-06 21:59:35,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=5375, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5573, PETRI_PLACES=204, PETRI_TRANSITIONS=275} [2023-11-06 21:59:35,484 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2023-11-06 21:59:35,484 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 275 transitions, 5573 flow [2023-11-06 21:59:35,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 344.75) internal successors, (2758), 8 states have internal predecessors, (2758), 0 states have call successors, (0), 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 21:59:35,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:35,485 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:35,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-06 21:59:35,485 INFO L420 AbstractCegarLoop]: === Iteration 32 === 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 21:59:35,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash 706820916, now seen corresponding path program 7 times [2023-11-06 21:59:35,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:35,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535671020] [2023-11-06 21:59:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:35,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:35,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:35,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535671020] [2023-11-06 21:59:35,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535671020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:35,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:35,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:35,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696790755] [2023-11-06 21:59:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:35,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:35,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:35,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:36,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:59:36,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 275 transitions, 5573 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:36,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:36,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:59:36,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:38,363 INFO L124 PetriNetUnfolderBase]: 5072/8161 cut-off events. [2023-11-06 21:59:38,363 INFO L125 PetriNetUnfolderBase]: For 135363/135363 co-relation queries the response was YES. [2023-11-06 21:59:38,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50655 conditions, 8161 events. 5072/8161 cut-off events. For 135363/135363 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 52221 event pairs, 938 based on Foata normal form. 4/7567 useless extension candidates. Maximal degree in co-relation 50552. Up to 4936 conditions per place. [2023-11-06 21:59:38,437 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 243 selfloop transitions, 97 changer transitions 4/344 dead transitions. [2023-11-06 21:59:38,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 344 transitions, 6926 flow [2023-11-06 21:59:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2473 transitions. [2023-11-06 21:59:38,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42411250214371465 [2023-11-06 21:59:38,440 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2473 transitions. [2023-11-06 21:59:38,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2473 transitions. [2023-11-06 21:59:38,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:38,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2473 transitions. [2023-11-06 21:59:38,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 353.2857142857143) internal successors, (2473), 7 states have internal predecessors, (2473), 0 states have call successors, (0), 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 21:59:38,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:38,447 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:38,448 INFO L175 Difference]: Start difference. First operand has 204 places, 275 transitions, 5573 flow. Second operand 7 states and 2473 transitions. [2023-11-06 21:59:38,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 344 transitions, 6926 flow [2023-11-06 21:59:39,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 344 transitions, 6821 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:59:39,343 INFO L231 Difference]: Finished difference. Result has 207 places, 273 transitions, 5617 flow [2023-11-06 21:59:39,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=5436, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5617, PETRI_PLACES=207, PETRI_TRANSITIONS=273} [2023-11-06 21:59:39,344 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2023-11-06 21:59:39,344 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 273 transitions, 5617 flow [2023-11-06 21:59:39,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:39,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:39,345 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:39,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-06 21:59:39,345 INFO L420 AbstractCegarLoop]: === Iteration 33 === 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 21:59:39,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:39,345 INFO L85 PathProgramCache]: Analyzing trace with hash 278954102, now seen corresponding path program 17 times [2023-11-06 21:59:39,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:39,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043363744] [2023-11-06 21:59:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:39,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:39,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:39,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043363744] [2023-11-06 21:59:39,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043363744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:39,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:39,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:39,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575938402] [2023-11-06 21:59:39,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:39,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:39,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:39,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:59:39,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 273 transitions, 5617 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:39,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:39,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:59:39,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:42,264 INFO L124 PetriNetUnfolderBase]: 5053/8124 cut-off events. [2023-11-06 21:59:42,265 INFO L125 PetriNetUnfolderBase]: For 142481/142481 co-relation queries the response was YES. [2023-11-06 21:59:42,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50677 conditions, 8124 events. 5053/8124 cut-off events. For 142481/142481 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 51606 event pairs, 1352 based on Foata normal form. 6/7532 useless extension candidates. Maximal degree in co-relation 50574. Up to 4980 conditions per place. [2023-11-06 21:59:42,347 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 229 selfloop transitions, 130 changer transitions 8/367 dead transitions. [2023-11-06 21:59:42,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 367 transitions, 7421 flow [2023-11-06 21:59:42,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:42,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2481 transitions. [2023-11-06 21:59:42,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42548447950608814 [2023-11-06 21:59:42,351 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2481 transitions. [2023-11-06 21:59:42,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2481 transitions. [2023-11-06 21:59:42,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:42,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2481 transitions. [2023-11-06 21:59:42,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.42857142857144) internal successors, (2481), 7 states have internal predecessors, (2481), 0 states have call successors, (0), 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 21:59:42,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:42,360 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:42,360 INFO L175 Difference]: Start difference. First operand has 207 places, 273 transitions, 5617 flow. Second operand 7 states and 2481 transitions. [2023-11-06 21:59:42,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 367 transitions, 7421 flow [2023-11-06 21:59:43,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 367 transitions, 7197 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 21:59:43,249 INFO L231 Difference]: Finished difference. Result has 211 places, 289 transitions, 6064 flow [2023-11-06 21:59:43,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=5423, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6064, PETRI_PLACES=211, PETRI_TRANSITIONS=289} [2023-11-06 21:59:43,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2023-11-06 21:59:43,250 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 289 transitions, 6064 flow [2023-11-06 21:59:43,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:43,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:43,251 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:43,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-06 21:59:43,251 INFO L420 AbstractCegarLoop]: === Iteration 34 === 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 21:59:43,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:43,251 INFO L85 PathProgramCache]: Analyzing trace with hash 287632244, now seen corresponding path program 18 times [2023-11-06 21:59:43,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:43,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723157928] [2023-11-06 21:59:43,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:43,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:43,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:43,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723157928] [2023-11-06 21:59:43,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723157928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:43,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:43,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:43,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160340506] [2023-11-06 21:59:43,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:43,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:43,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:43,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:43,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:43,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:59:43,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 289 transitions, 6064 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:43,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:43,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:59:43,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:46,317 INFO L124 PetriNetUnfolderBase]: 5044/8109 cut-off events. [2023-11-06 21:59:46,317 INFO L125 PetriNetUnfolderBase]: For 144000/144000 co-relation queries the response was YES. [2023-11-06 21:59:46,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51109 conditions, 8109 events. 5044/8109 cut-off events. For 144000/144000 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 51473 event pairs, 1364 based on Foata normal form. 4/7515 useless extension candidates. Maximal degree in co-relation 51002. Up to 4980 conditions per place. [2023-11-06 21:59:46,407 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 234 selfloop transitions, 129 changer transitions 0/363 dead transitions. [2023-11-06 21:59:46,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 363 transitions, 7500 flow [2023-11-06 21:59:46,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:46,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2482 transitions. [2023-11-06 21:59:46,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42565597667638483 [2023-11-06 21:59:46,411 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2482 transitions. [2023-11-06 21:59:46,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2482 transitions. [2023-11-06 21:59:46,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:46,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2482 transitions. [2023-11-06 21:59:46,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.57142857142856) internal successors, (2482), 7 states have internal predecessors, (2482), 0 states have call successors, (0), 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 21:59:46,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:46,420 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:46,420 INFO L175 Difference]: Start difference. First operand has 211 places, 289 transitions, 6064 flow. Second operand 7 states and 2482 transitions. [2023-11-06 21:59:46,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 363 transitions, 7500 flow [2023-11-06 21:59:47,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 363 transitions, 7305 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-06 21:59:47,511 INFO L231 Difference]: Finished difference. Result has 216 places, 293 transitions, 6258 flow [2023-11-06 21:59:47,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=5881, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6258, PETRI_PLACES=216, PETRI_TRANSITIONS=293} [2023-11-06 21:59:47,512 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2023-11-06 21:59:47,512 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 293 transitions, 6258 flow [2023-11-06 21:59:47,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:47,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:47,513 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:47,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-06 21:59:47,513 INFO L420 AbstractCegarLoop]: === Iteration 35 === 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 21:59:47,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:47,514 INFO L85 PathProgramCache]: Analyzing trace with hash -163161838, now seen corresponding path program 8 times [2023-11-06 21:59:47,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:47,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116691370] [2023-11-06 21:59:47,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:47,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:48,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:48,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116691370] [2023-11-06 21:59:48,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116691370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:48,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:48,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:48,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322841633] [2023-11-06 21:59:48,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:48,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:48,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:48,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:48,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:48,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:59:48,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 293 transitions, 6258 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:48,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:48,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:59:48,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:50,754 INFO L124 PetriNetUnfolderBase]: 5040/8105 cut-off events. [2023-11-06 21:59:50,754 INFO L125 PetriNetUnfolderBase]: For 146727/146727 co-relation queries the response was YES. [2023-11-06 21:59:50,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51239 conditions, 8105 events. 5040/8105 cut-off events. For 146727/146727 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 51542 event pairs, 1218 based on Foata normal form. 4/7511 useless extension candidates. Maximal degree in co-relation 51130. Up to 3192 conditions per place. [2023-11-06 21:59:50,870 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 258 selfloop transitions, 126 changer transitions 0/384 dead transitions. [2023-11-06 21:59:50,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 384 transitions, 7992 flow [2023-11-06 21:59:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:50,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2491 transitions. [2023-11-06 21:59:50,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42719945120905506 [2023-11-06 21:59:50,878 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2491 transitions. [2023-11-06 21:59:50,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2491 transitions. [2023-11-06 21:59:50,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:50,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2491 transitions. [2023-11-06 21:59:50,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.85714285714283) internal successors, (2491), 7 states have internal predecessors, (2491), 0 states have call successors, (0), 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 21:59:50,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:50,883 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:50,883 INFO L175 Difference]: Start difference. First operand has 216 places, 293 transitions, 6258 flow. Second operand 7 states and 2491 transitions. [2023-11-06 21:59:50,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 384 transitions, 7992 flow [2023-11-06 21:59:52,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 384 transitions, 7747 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 21:59:52,019 INFO L231 Difference]: Finished difference. Result has 222 places, 301 transitions, 6542 flow [2023-11-06 21:59:52,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=6017, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6542, PETRI_PLACES=222, PETRI_TRANSITIONS=301} [2023-11-06 21:59:52,020 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2023-11-06 21:59:52,020 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 301 transitions, 6542 flow [2023-11-06 21:59:52,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:52,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:52,021 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:52,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-06 21:59:52,021 INFO L420 AbstractCegarLoop]: === Iteration 36 === 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 21:59:52,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:52,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1292185594, now seen corresponding path program 9 times [2023-11-06 21:59:52,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:52,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528134406] [2023-11-06 21:59:52,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:52,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:52,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:52,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528134406] [2023-11-06 21:59:52,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528134406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:52,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:52,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:52,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041372713] [2023-11-06 21:59:52,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:52,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:52,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:52,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:52,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:52,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:59:52,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 301 transitions, 6542 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:52,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:52,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:59:52,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:54,886 INFO L124 PetriNetUnfolderBase]: 5024/8077 cut-off events. [2023-11-06 21:59:54,886 INFO L125 PetriNetUnfolderBase]: For 153005/153005 co-relation queries the response was YES. [2023-11-06 21:59:54,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51534 conditions, 8077 events. 5024/8077 cut-off events. For 153005/153005 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 51367 event pairs, 1210 based on Foata normal form. 10/7493 useless extension candidates. Maximal degree in co-relation 51422. Up to 3192 conditions per place. [2023-11-06 21:59:54,981 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 259 selfloop transitions, 126 changer transitions 0/385 dead transitions. [2023-11-06 21:59:54,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 385 transitions, 8120 flow [2023-11-06 21:59:54,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:54,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2491 transitions. [2023-11-06 21:59:54,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42719945120905506 [2023-11-06 21:59:54,985 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2491 transitions. [2023-11-06 21:59:54,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2491 transitions. [2023-11-06 21:59:54,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:54,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2491 transitions. [2023-11-06 21:59:54,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.85714285714283) internal successors, (2491), 7 states have internal predecessors, (2491), 0 states have call successors, (0), 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 21:59:54,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:54,994 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:54,994 INFO L175 Difference]: Start difference. First operand has 222 places, 301 transitions, 6542 flow. Second operand 7 states and 2491 transitions. [2023-11-06 21:59:54,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 385 transitions, 8120 flow [2023-11-06 21:59:56,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 385 transitions, 7914 flow, removed 38 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:56,201 INFO L231 Difference]: Finished difference. Result has 228 places, 303 transitions, 6663 flow [2023-11-06 21:59:56,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=6348, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6663, PETRI_PLACES=228, PETRI_TRANSITIONS=303} [2023-11-06 21:59:56,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2023-11-06 21:59:56,202 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 303 transitions, 6663 flow [2023-11-06 21:59:56,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:56,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:56,203 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:56,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-06 21:59:56,203 INFO L420 AbstractCegarLoop]: === Iteration 37 === 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 21:59:56,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:56,204 INFO L85 PathProgramCache]: Analyzing trace with hash 944921780, now seen corresponding path program 19 times [2023-11-06 21:59:56,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:56,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935120163] [2023-11-06 21:59:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:56,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:59:56,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:56,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935120163] [2023-11-06 21:59:56,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935120163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:56,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:56,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:59:56,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181518544] [2023-11-06 21:59:56,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:56,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:59:56,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:56,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:59:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:59:56,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 21:59:56,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 303 transitions, 6663 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 21:59:56,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:56,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 21:59:56,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:58,975 INFO L124 PetriNetUnfolderBase]: 5008/8047 cut-off events. [2023-11-06 21:59:58,975 INFO L125 PetriNetUnfolderBase]: For 152500/152500 co-relation queries the response was YES. [2023-11-06 21:59:59,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51434 conditions, 8047 events. 5008/8047 cut-off events. For 152500/152500 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 50977 event pairs, 1340 based on Foata normal form. 6/7459 useless extension candidates. Maximal degree in co-relation 51320. Up to 4948 conditions per place. [2023-11-06 21:59:59,072 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 231 selfloop transitions, 130 changer transitions 6/367 dead transitions. [2023-11-06 21:59:59,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 367 transitions, 7994 flow [2023-11-06 21:59:59,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:59:59,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:59:59,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2474 transitions. [2023-11-06 21:59:59,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42428399931401134 [2023-11-06 21:59:59,075 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2474 transitions. [2023-11-06 21:59:59,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2474 transitions. [2023-11-06 21:59:59,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:59,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2474 transitions. [2023-11-06 21:59:59,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 353.42857142857144) internal successors, (2474), 7 states have internal predecessors, (2474), 0 states have call successors, (0), 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 21:59:59,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:59,080 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 21:59:59,080 INFO L175 Difference]: Start difference. First operand has 228 places, 303 transitions, 6663 flow. Second operand 7 states and 2474 transitions. [2023-11-06 21:59:59,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 367 transitions, 7994 flow [2023-11-06 22:00:00,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 367 transitions, 7747 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-06 22:00:00,185 INFO L231 Difference]: Finished difference. Result has 232 places, 303 transitions, 6683 flow [2023-11-06 22:00:00,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=6416, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6683, PETRI_PLACES=232, PETRI_TRANSITIONS=303} [2023-11-06 22:00:00,186 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2023-11-06 22:00:00,186 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 303 transitions, 6683 flow [2023-11-06 22:00:00,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:00,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:00,186 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:00,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-06 22:00:00,187 INFO L420 AbstractCegarLoop]: === Iteration 38 === 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 22:00:00,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash -995219024, now seen corresponding path program 10 times [2023-11-06 22:00:00,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:00,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199091039] [2023-11-06 22:00:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:00,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:00,583 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:00,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:00,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199091039] [2023-11-06 22:00:00,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199091039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:00,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:00,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:00:00,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074319813] [2023-11-06 22:00:00,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:00,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:00:00,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:00,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:00:00,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:00:00,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 22:00:00,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 303 transitions, 6683 flow. Second operand has 8 states, 8 states have (on average 344.75) internal successors, (2758), 8 states have internal predecessors, (2758), 0 states have call successors, (0), 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 22:00:00,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:00,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 22:00:00,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:03,433 INFO L124 PetriNetUnfolderBase]: 5251/8448 cut-off events. [2023-11-06 22:00:03,433 INFO L125 PetriNetUnfolderBase]: For 158503/158503 co-relation queries the response was YES. [2023-11-06 22:00:03,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53610 conditions, 8448 events. 5251/8448 cut-off events. For 158503/158503 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 54291 event pairs, 1078 based on Foata normal form. 10/7802 useless extension candidates. Maximal degree in co-relation 53494. Up to 3192 conditions per place. [2023-11-06 22:00:03,528 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 296 selfloop transitions, 109 changer transitions 0/405 dead transitions. [2023-11-06 22:00:03,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 405 transitions, 8631 flow [2023-11-06 22:00:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2490 transitions. [2023-11-06 22:00:03,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270279540387584 [2023-11-06 22:00:03,531 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2490 transitions. [2023-11-06 22:00:03,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2490 transitions. [2023-11-06 22:00:03,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:03,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2490 transitions. [2023-11-06 22:00:03,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.7142857142857) internal successors, (2490), 7 states have internal predecessors, (2490), 0 states have call successors, (0), 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 22:00:03,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:03,536 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:03,536 INFO L175 Difference]: Start difference. First operand has 232 places, 303 transitions, 6683 flow. Second operand 7 states and 2490 transitions. [2023-11-06 22:00:03,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 405 transitions, 8631 flow [2023-11-06 22:00:04,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 405 transitions, 8365 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-06 22:00:04,727 INFO L231 Difference]: Finished difference. Result has 233 places, 305 transitions, 6740 flow [2023-11-06 22:00:04,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=6400, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6740, PETRI_PLACES=233, PETRI_TRANSITIONS=305} [2023-11-06 22:00:04,728 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2023-11-06 22:00:04,728 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 305 transitions, 6740 flow [2023-11-06 22:00:04,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 344.75) internal successors, (2758), 8 states have internal predecessors, (2758), 0 states have call successors, (0), 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 22:00:04,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:04,728 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:04,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-06 22:00:04,728 INFO L420 AbstractCegarLoop]: === Iteration 39 === 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 22:00:04,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash -959346086, now seen corresponding path program 11 times [2023-11-06 22:00:04,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:04,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257978535] [2023-11-06 22:00:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:04,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:05,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:05,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257978535] [2023-11-06 22:00:05,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257978535] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:05,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:05,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:00:05,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780783565] [2023-11-06 22:00:05,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:05,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:00:05,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:05,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:00:05,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:00:05,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 22:00:05,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 305 transitions, 6740 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:05,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:05,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 22:00:05,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:08,381 INFO L124 PetriNetUnfolderBase]: 5243/8440 cut-off events. [2023-11-06 22:00:08,382 INFO L125 PetriNetUnfolderBase]: For 160839/160839 co-relation queries the response was YES. [2023-11-06 22:00:08,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54177 conditions, 8440 events. 5243/8440 cut-off events. For 160839/160839 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 54121 event pairs, 1184 based on Foata normal form. 8/8346 useless extension candidates. Maximal degree in co-relation 54060. Up to 3192 conditions per place. [2023-11-06 22:00:08,478 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 292 selfloop transitions, 106 changer transitions 1/399 dead transitions. [2023-11-06 22:00:08,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 399 transitions, 8533 flow [2023-11-06 22:00:08,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:08,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:08,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2485 transitions. [2023-11-06 22:00:08,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261704681872749 [2023-11-06 22:00:08,483 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2485 transitions. [2023-11-06 22:00:08,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2485 transitions. [2023-11-06 22:00:08,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:08,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2485 transitions. [2023-11-06 22:00:08,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.0) internal successors, (2485), 7 states have internal predecessors, (2485), 0 states have call successors, (0), 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 22:00:08,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:08,491 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:08,491 INFO L175 Difference]: Start difference. First operand has 233 places, 305 transitions, 6740 flow. Second operand 7 states and 2485 transitions. [2023-11-06 22:00:08,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 399 transitions, 8533 flow [2023-11-06 22:00:09,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 399 transitions, 8405 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:00:09,625 INFO L231 Difference]: Finished difference. Result has 240 places, 310 transitions, 7021 flow [2023-11-06 22:00:09,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=6612, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7021, PETRI_PLACES=240, PETRI_TRANSITIONS=310} [2023-11-06 22:00:09,626 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2023-11-06 22:00:09,626 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 310 transitions, 7021 flow [2023-11-06 22:00:09,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:09,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:09,627 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:09,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-06 22:00:09,627 INFO L420 AbstractCegarLoop]: === Iteration 40 === 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 22:00:09,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:09,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1355321532, now seen corresponding path program 20 times [2023-11-06 22:00:09,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:09,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478055847] [2023-11-06 22:00:09,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:09,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:10,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:10,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:10,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478055847] [2023-11-06 22:00:10,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478055847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:10,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:10,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:00:10,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543475689] [2023-11-06 22:00:10,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:10,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:00:10,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:10,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:00:10,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:00:11,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 833 [2023-11-06 22:00:11,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 310 transitions, 7021 flow. Second operand has 9 states, 9 states have (on average 340.44444444444446) internal successors, (3064), 9 states have internal predecessors, (3064), 0 states have call successors, (0), 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 22:00:11,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:11,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 833 [2023-11-06 22:00:11,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:13,931 INFO L124 PetriNetUnfolderBase]: 5250/8455 cut-off events. [2023-11-06 22:00:13,931 INFO L125 PetriNetUnfolderBase]: For 169966/169966 co-relation queries the response was YES. [2023-11-06 22:00:13,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55156 conditions, 8455 events. 5250/8455 cut-off events. For 169966/169966 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 54153 event pairs, 1438 based on Foata normal form. 2/8355 useless extension candidates. Maximal degree in co-relation 55036. Up to 5348 conditions per place. [2023-11-06 22:00:14,027 INFO L140 encePairwiseOnDemand]: 824/833 looper letters, 255 selfloop transitions, 130 changer transitions 11/396 dead transitions. [2023-11-06 22:00:14,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 396 transitions, 8552 flow [2023-11-06 22:00:14,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:00:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:00:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2802 transitions. [2023-11-06 22:00:14,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42046818727491 [2023-11-06 22:00:14,031 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2802 transitions. [2023-11-06 22:00:14,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2802 transitions. [2023-11-06 22:00:14,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:14,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2802 transitions. [2023-11-06 22:00:14,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 350.25) internal successors, (2802), 8 states have internal predecessors, (2802), 0 states have call successors, (0), 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 22:00:14,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 833.0) internal successors, (7497), 9 states have internal predecessors, (7497), 0 states have call successors, (0), 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 22:00:14,037 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 833.0) internal successors, (7497), 9 states have internal predecessors, (7497), 0 states have call successors, (0), 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 22:00:14,037 INFO L175 Difference]: Start difference. First operand has 240 places, 310 transitions, 7021 flow. Second operand 8 states and 2802 transitions. [2023-11-06 22:00:14,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 396 transitions, 8552 flow [2023-11-06 22:00:15,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 396 transitions, 8355 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-06 22:00:15,450 INFO L231 Difference]: Finished difference. Result has 247 places, 312 transitions, 7137 flow [2023-11-06 22:00:15,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=6824, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7137, PETRI_PLACES=247, PETRI_TRANSITIONS=312} [2023-11-06 22:00:15,451 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2023-11-06 22:00:15,451 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 312 transitions, 7137 flow [2023-11-06 22:00:15,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 340.44444444444446) internal successors, (3064), 9 states have internal predecessors, (3064), 0 states have call successors, (0), 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 22:00:15,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:15,452 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:15,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-06 22:00:15,452 INFO L420 AbstractCegarLoop]: === Iteration 41 === 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 22:00:15,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash -277056048, now seen corresponding path program 12 times [2023-11-06 22:00:15,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:15,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716118599] [2023-11-06 22:00:15,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:15,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:15,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:15,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716118599] [2023-11-06 22:00:15,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716118599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:15,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:15,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:00:15,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776182478] [2023-11-06 22:00:15,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:15,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:00:15,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:15,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:00:15,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:00:16,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 833 [2023-11-06 22:00:16,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 312 transitions, 7137 flow. Second operand has 8 states, 8 states have (on average 342.75) internal successors, (2742), 8 states have internal predecessors, (2742), 0 states have call successors, (0), 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 22:00:16,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:16,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 833 [2023-11-06 22:00:16,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:18,958 INFO L124 PetriNetUnfolderBase]: 5235/8416 cut-off events. [2023-11-06 22:00:18,958 INFO L125 PetriNetUnfolderBase]: For 175492/175492 co-relation queries the response was YES. [2023-11-06 22:00:19,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56412 conditions, 8416 events. 5235/8416 cut-off events. For 175492/175492 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 53793 event pairs, 1210 based on Foata normal form. 10/8324 useless extension candidates. Maximal degree in co-relation 56289. Up to 3192 conditions per place. [2023-11-06 22:00:19,046 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 289 selfloop transitions, 110 changer transitions 0/399 dead transitions. [2023-11-06 22:00:19,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 399 transitions, 8844 flow [2023-11-06 22:00:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:19,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2470 transitions. [2023-11-06 22:00:19,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42359801063282454 [2023-11-06 22:00:19,049 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2470 transitions. [2023-11-06 22:00:19,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2470 transitions. [2023-11-06 22:00:19,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:19,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2470 transitions. [2023-11-06 22:00:19,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 352.85714285714283) internal successors, (2470), 7 states have internal predecessors, (2470), 0 states have call successors, (0), 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 22:00:19,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:19,056 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:19,056 INFO L175 Difference]: Start difference. First operand has 247 places, 312 transitions, 7137 flow. Second operand 7 states and 2470 transitions. [2023-11-06 22:00:19,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 399 transitions, 8844 flow [2023-11-06 22:00:20,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 399 transitions, 8581 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-11-06 22:00:20,618 INFO L231 Difference]: Finished difference. Result has 247 places, 316 transitions, 7242 flow [2023-11-06 22:00:20,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=6871, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7242, PETRI_PLACES=247, PETRI_TRANSITIONS=316} [2023-11-06 22:00:20,619 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 217 predicate places. [2023-11-06 22:00:20,619 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 316 transitions, 7242 flow [2023-11-06 22:00:20,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 342.75) internal successors, (2742), 8 states have internal predecessors, (2742), 0 states have call successors, (0), 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 22:00:20,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:20,620 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:20,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-06 22:00:20,621 INFO L420 AbstractCegarLoop]: === Iteration 42 === 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 22:00:20,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:20,621 INFO L85 PathProgramCache]: Analyzing trace with hash -54429132, now seen corresponding path program 21 times [2023-11-06 22:00:20,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:20,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659581608] [2023-11-06 22:00:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:20,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:21,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:21,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659581608] [2023-11-06 22:00:21,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659581608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:21,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:21,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:00:21,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779340040] [2023-11-06 22:00:21,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:21,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:00:21,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:21,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:00:21,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:00:21,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 22:00:21,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 316 transitions, 7242 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:21,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:21,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 22:00:21,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:24,105 INFO L124 PetriNetUnfolderBase]: 5223/8390 cut-off events. [2023-11-06 22:00:24,105 INFO L125 PetriNetUnfolderBase]: For 178291/178291 co-relation queries the response was YES. [2023-11-06 22:00:24,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56240 conditions, 8390 events. 5223/8390 cut-off events. For 178291/178291 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 53484 event pairs, 1438 based on Foata normal form. 8/8296 useless extension candidates. Maximal degree in co-relation 56118. Up to 5376 conditions per place. [2023-11-06 22:00:24,198 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 253 selfloop transitions, 130 changer transitions 0/383 dead transitions. [2023-11-06 22:00:24,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 383 transitions, 8581 flow [2023-11-06 22:00:24,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:24,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2023-11-06 22:00:24,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42514148516549477 [2023-11-06 22:00:24,202 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2023-11-06 22:00:24,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2023-11-06 22:00:24,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:24,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2023-11-06 22:00:24,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 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 22:00:24,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:24,211 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:24,211 INFO L175 Difference]: Start difference. First operand has 247 places, 316 transitions, 7242 flow. Second operand 7 states and 2479 transitions. [2023-11-06 22:00:24,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 383 transitions, 8581 flow [2023-11-06 22:00:25,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 383 transitions, 8355 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-11-06 22:00:25,858 INFO L231 Difference]: Finished difference. Result has 246 places, 315 transitions, 7258 flow [2023-11-06 22:00:25,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=6998, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7258, PETRI_PLACES=246, PETRI_TRANSITIONS=315} [2023-11-06 22:00:25,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2023-11-06 22:00:25,859 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 315 transitions, 7258 flow [2023-11-06 22:00:25,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:25,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:25,860 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:25,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-06 22:00:25,861 INFO L420 AbstractCegarLoop]: === Iteration 43 === 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 22:00:25,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:25,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1517365712, now seen corresponding path program 13 times [2023-11-06 22:00:25,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:25,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645233768] [2023-11-06 22:00:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:25,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:26,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:26,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:26,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645233768] [2023-11-06 22:00:26,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645233768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:26,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:26,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:00:26,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149393199] [2023-11-06 22:00:26,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:26,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:00:26,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:26,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:00:26,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:00:26,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 22:00:26,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 315 transitions, 7258 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:26,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:26,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 22:00:26,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:29,157 INFO L124 PetriNetUnfolderBase]: 5327/8568 cut-off events. [2023-11-06 22:00:29,158 INFO L125 PetriNetUnfolderBase]: For 179082/179082 co-relation queries the response was YES. [2023-11-06 22:00:29,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56753 conditions, 8568 events. 5327/8568 cut-off events. For 179082/179082 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 54834 event pairs, 1318 based on Foata normal form. 20/8486 useless extension candidates. Maximal degree in co-relation 56632. Up to 3222 conditions per place. [2023-11-06 22:00:29,303 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 283 selfloop transitions, 121 changer transitions 0/404 dead transitions. [2023-11-06 22:00:29,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 404 transitions, 9026 flow [2023-11-06 22:00:29,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:29,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2486 transitions. [2023-11-06 22:00:29,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263419653575716 [2023-11-06 22:00:29,307 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2486 transitions. [2023-11-06 22:00:29,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2486 transitions. [2023-11-06 22:00:29,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:29,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2486 transitions. [2023-11-06 22:00:29,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.14285714285717) internal successors, (2486), 7 states have internal predecessors, (2486), 0 states have call successors, (0), 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 22:00:29,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:29,317 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:29,318 INFO L175 Difference]: Start difference. First operand has 246 places, 315 transitions, 7258 flow. Second operand 7 states and 2486 transitions. [2023-11-06 22:00:29,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 404 transitions, 9026 flow [2023-11-06 22:00:30,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 404 transitions, 8758 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:00:30,944 INFO L231 Difference]: Finished difference. Result has 251 places, 332 transitions, 7769 flow [2023-11-06 22:00:30,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=7000, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7769, PETRI_PLACES=251, PETRI_TRANSITIONS=332} [2023-11-06 22:00:30,946 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2023-11-06 22:00:30,946 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 332 transitions, 7769 flow [2023-11-06 22:00:30,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:30,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:30,946 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:30,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-06 22:00:30,947 INFO L420 AbstractCegarLoop]: === Iteration 44 === 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 22:00:30,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:30,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1906018620, now seen corresponding path program 14 times [2023-11-06 22:00:30,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:30,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054032940] [2023-11-06 22:00:30,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:30,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:31,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:31,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054032940] [2023-11-06 22:00:31,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054032940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:31,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:31,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:00:31,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205059023] [2023-11-06 22:00:31,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:31,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:00:31,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:31,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:00:31,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:00:31,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 22:00:31,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 332 transitions, 7769 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:31,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:31,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 22:00:31,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:34,117 INFO L124 PetriNetUnfolderBase]: 5328/8585 cut-off events. [2023-11-06 22:00:34,117 INFO L125 PetriNetUnfolderBase]: For 186885/186885 co-relation queries the response was YES. [2023-11-06 22:00:34,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57537 conditions, 8585 events. 5328/8585 cut-off events. For 186885/186885 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 55211 event pairs, 1334 based on Foata normal form. 8/8491 useless extension candidates. Maximal degree in co-relation 57412. Up to 3222 conditions per place. [2023-11-06 22:00:34,240 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 286 selfloop transitions, 120 changer transitions 1/407 dead transitions. [2023-11-06 22:00:34,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 407 transitions, 9205 flow [2023-11-06 22:00:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:34,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2484 transitions. [2023-11-06 22:00:34,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259989710169782 [2023-11-06 22:00:34,243 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2484 transitions. [2023-11-06 22:00:34,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2484 transitions. [2023-11-06 22:00:34,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:34,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2484 transitions. [2023-11-06 22:00:34,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.85714285714283) internal successors, (2484), 7 states have internal predecessors, (2484), 0 states have call successors, (0), 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 22:00:34,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:34,248 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:34,248 INFO L175 Difference]: Start difference. First operand has 251 places, 332 transitions, 7769 flow. Second operand 7 states and 2484 transitions. [2023-11-06 22:00:34,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 407 transitions, 9205 flow [2023-11-06 22:00:35,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 407 transitions, 8983 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-06 22:00:35,900 INFO L231 Difference]: Finished difference. Result has 257 places, 337 transitions, 7958 flow [2023-11-06 22:00:35,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=7553, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7958, PETRI_PLACES=257, PETRI_TRANSITIONS=337} [2023-11-06 22:00:35,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2023-11-06 22:00:35,902 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 337 transitions, 7958 flow [2023-11-06 22:00:35,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:35,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:35,903 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:35,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-06 22:00:35,903 INFO L420 AbstractCegarLoop]: === Iteration 45 === 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 22:00:35,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:35,903 INFO L85 PathProgramCache]: Analyzing trace with hash 672762292, now seen corresponding path program 15 times [2023-11-06 22:00:35,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:35,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871336812] [2023-11-06 22:00:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:35,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:36,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:36,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:36,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871336812] [2023-11-06 22:00:36,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871336812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:36,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:36,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:00:36,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601924748] [2023-11-06 22:00:36,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:36,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:00:36,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:36,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:00:36,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:00:36,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 22:00:36,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 337 transitions, 7958 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:36,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:36,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 22:00:36,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:39,316 INFO L124 PetriNetUnfolderBase]: 5307/8536 cut-off events. [2023-11-06 22:00:39,316 INFO L125 PetriNetUnfolderBase]: For 188787/188787 co-relation queries the response was YES. [2023-11-06 22:00:39,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57744 conditions, 8536 events. 5307/8536 cut-off events. For 188787/188787 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 54671 event pairs, 1334 based on Foata normal form. 8/8442 useless extension candidates. Maximal degree in co-relation 57616. Up to 3222 conditions per place. [2023-11-06 22:00:39,421 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 283 selfloop transitions, 122 changer transitions 1/406 dead transitions. [2023-11-06 22:00:39,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 406 transitions, 9270 flow [2023-11-06 22:00:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2484 transitions. [2023-11-06 22:00:39,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259989710169782 [2023-11-06 22:00:39,424 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2484 transitions. [2023-11-06 22:00:39,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2484 transitions. [2023-11-06 22:00:39,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:39,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2484 transitions. [2023-11-06 22:00:39,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.85714285714283) internal successors, (2484), 7 states have internal predecessors, (2484), 0 states have call successors, (0), 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 22:00:39,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:39,430 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:39,430 INFO L175 Difference]: Start difference. First operand has 257 places, 337 transitions, 7958 flow. Second operand 7 states and 2484 transitions. [2023-11-06 22:00:39,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 406 transitions, 9270 flow [2023-11-06 22:00:41,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 406 transitions, 9043 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-06 22:00:41,097 INFO L231 Difference]: Finished difference. Result has 262 places, 337 transitions, 8000 flow [2023-11-06 22:00:41,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=7713, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8000, PETRI_PLACES=262, PETRI_TRANSITIONS=337} [2023-11-06 22:00:41,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2023-11-06 22:00:41,098 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 337 transitions, 8000 flow [2023-11-06 22:00:41,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:41,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:41,099 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:41,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-06 22:00:41,099 INFO L420 AbstractCegarLoop]: === Iteration 46 === 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 22:00:41,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:41,100 INFO L85 PathProgramCache]: Analyzing trace with hash -2054935378, now seen corresponding path program 22 times [2023-11-06 22:00:41,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:41,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759093839] [2023-11-06 22:00:41,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:41,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:41,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:41,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759093839] [2023-11-06 22:00:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759093839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:41,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:41,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:00:41,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787417194] [2023-11-06 22:00:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:41,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:00:41,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:41,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:00:41,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:00:41,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 22:00:41,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 337 transitions, 8000 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:41,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:41,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 22:00:41,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:44,700 INFO L124 PetriNetUnfolderBase]: 5328/8575 cut-off events. [2023-11-06 22:00:44,700 INFO L125 PetriNetUnfolderBase]: For 190417/190417 co-relation queries the response was YES. [2023-11-06 22:00:44,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57808 conditions, 8575 events. 5328/8575 cut-off events. For 190417/190417 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 55006 event pairs, 1488 based on Foata normal form. 8/8481 useless extension candidates. Maximal degree in co-relation 57678. Up to 5524 conditions per place. [2023-11-06 22:00:44,802 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 266 selfloop transitions, 138 changer transitions 0/404 dead transitions. [2023-11-06 22:00:44,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 404 transitions, 9318 flow [2023-11-06 22:00:44,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:44,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2488 transitions. [2023-11-06 22:00:44,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.426684959698165 [2023-11-06 22:00:44,806 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2488 transitions. [2023-11-06 22:00:44,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2488 transitions. [2023-11-06 22:00:44,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:44,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2488 transitions. [2023-11-06 22:00:44,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.42857142857144) internal successors, (2488), 7 states have internal predecessors, (2488), 0 states have call successors, (0), 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 22:00:44,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:44,815 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:44,815 INFO L175 Difference]: Start difference. First operand has 262 places, 337 transitions, 8000 flow. Second operand 7 states and 2488 transitions. [2023-11-06 22:00:44,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 404 transitions, 9318 flow [2023-11-06 22:00:46,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 404 transitions, 9099 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-11-06 22:00:46,452 INFO L231 Difference]: Finished difference. Result has 267 places, 342 transitions, 8201 flow [2023-11-06 22:00:46,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=7785, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8201, PETRI_PLACES=267, PETRI_TRANSITIONS=342} [2023-11-06 22:00:46,453 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2023-11-06 22:00:46,453 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 342 transitions, 8201 flow [2023-11-06 22:00:46,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:46,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:46,454 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:46,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-06 22:00:46,454 INFO L420 AbstractCegarLoop]: === Iteration 47 === 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 22:00:46,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:46,455 INFO L85 PathProgramCache]: Analyzing trace with hash -433348526, now seen corresponding path program 16 times [2023-11-06 22:00:46,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:46,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154648893] [2023-11-06 22:00:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:46,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:46,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:46,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154648893] [2023-11-06 22:00:46,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154648893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:46,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:46,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:00:46,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378905249] [2023-11-06 22:00:46,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:46,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:00:46,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:46,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:00:46,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:00:47,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 22:00:47,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 342 transitions, 8201 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:47,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:47,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 22:00:47,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:49,939 INFO L124 PetriNetUnfolderBase]: 5340/8595 cut-off events. [2023-11-06 22:00:49,939 INFO L125 PetriNetUnfolderBase]: For 189869/189869 co-relation queries the response was YES. [2023-11-06 22:00:50,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58084 conditions, 8595 events. 5340/8595 cut-off events. For 189869/189869 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 55141 event pairs, 1346 based on Foata normal form. 4/8497 useless extension candidates. Maximal degree in co-relation 57952. Up to 3268 conditions per place. [2023-11-06 22:00:50,083 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 281 selfloop transitions, 126 changer transitions 0/407 dead transitions. [2023-11-06 22:00:50,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 407 transitions, 9522 flow [2023-11-06 22:00:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:50,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2480 transitions. [2023-11-06 22:00:50,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42531298233579146 [2023-11-06 22:00:50,087 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2480 transitions. [2023-11-06 22:00:50,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2480 transitions. [2023-11-06 22:00:50,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:50,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2480 transitions. [2023-11-06 22:00:50,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.2857142857143) internal successors, (2480), 7 states have internal predecessors, (2480), 0 states have call successors, (0), 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 22:00:50,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:50,097 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:50,097 INFO L175 Difference]: Start difference. First operand has 267 places, 342 transitions, 8201 flow. Second operand 7 states and 2480 transitions. [2023-11-06 22:00:50,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 407 transitions, 9522 flow [2023-11-06 22:00:52,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 407 transitions, 9330 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-06 22:00:52,134 INFO L231 Difference]: Finished difference. Result has 273 places, 345 transitions, 8328 flow [2023-11-06 22:00:52,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=8013, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8328, PETRI_PLACES=273, PETRI_TRANSITIONS=345} [2023-11-06 22:00:52,135 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2023-11-06 22:00:52,135 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 345 transitions, 8328 flow [2023-11-06 22:00:52,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:52,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:52,136 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:52,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-06 22:00:52,139 INFO L420 AbstractCegarLoop]: === Iteration 48 === 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 22:00:52,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:52,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1415412804, now seen corresponding path program 17 times [2023-11-06 22:00:52,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:52,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699813329] [2023-11-06 22:00:52,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:52,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:52,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:52,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699813329] [2023-11-06 22:00:52,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699813329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:00:52,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:00:52,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:00:52,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540426198] [2023-11-06 22:00:52,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:52,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:00:52,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:52,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:00:52,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:00:52,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 22:00:52,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 345 transitions, 8328 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:52,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:52,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 22:00:52,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:55,743 INFO L124 PetriNetUnfolderBase]: 5402/8681 cut-off events. [2023-11-06 22:00:55,743 INFO L125 PetriNetUnfolderBase]: For 200836/200836 co-relation queries the response was YES. [2023-11-06 22:00:55,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59550 conditions, 8681 events. 5402/8681 cut-off events. For 200836/200836 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 55680 event pairs, 1342 based on Foata normal form. 4/8583 useless extension candidates. Maximal degree in co-relation 59416. Up to 3292 conditions per place. [2023-11-06 22:00:55,854 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 282 selfloop transitions, 140 changer transitions 0/422 dead transitions. [2023-11-06 22:00:55,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 422 transitions, 9913 flow [2023-11-06 22:00:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:00:55,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:00:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2486 transitions. [2023-11-06 22:00:55,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263419653575716 [2023-11-06 22:00:55,857 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2486 transitions. [2023-11-06 22:00:55,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2486 transitions. [2023-11-06 22:00:55,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:00:55,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2486 transitions. [2023-11-06 22:00:55,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 355.14285714285717) internal successors, (2486), 7 states have internal predecessors, (2486), 0 states have call successors, (0), 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 22:00:55,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:55,862 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:00:55,862 INFO L175 Difference]: Start difference. First operand has 273 places, 345 transitions, 8328 flow. Second operand 7 states and 2486 transitions. [2023-11-06 22:00:55,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 422 transitions, 9913 flow [2023-11-06 22:00:57,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 422 transitions, 9634 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-06 22:00:57,620 INFO L231 Difference]: Finished difference. Result has 273 places, 355 transitions, 8636 flow [2023-11-06 22:00:57,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=8036, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8636, PETRI_PLACES=273, PETRI_TRANSITIONS=355} [2023-11-06 22:00:57,621 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2023-11-06 22:00:57,621 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 355 transitions, 8636 flow [2023-11-06 22:00:57,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:00:57,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:00:57,622 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:00:57,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-06 22:00:57,622 INFO L420 AbstractCegarLoop]: === Iteration 49 === 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 22:00:57,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:00:57,623 INFO L85 PathProgramCache]: Analyzing trace with hash -285065758, now seen corresponding path program 18 times [2023-11-06 22:00:57,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:00:57,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652214721] [2023-11-06 22:00:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:00:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:00:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:00:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:57,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:00:57,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652214721] [2023-11-06 22:00:57,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652214721] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:00:57,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946395655] [2023-11-06 22:00:57,987 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:00:57,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:00:57,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:00:57,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:00:57,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:00:58,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-06 22:00:58,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:00:58,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:00:58,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:00:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:58,484 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:00:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:00:58,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946395655] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:00:58,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:00:58,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-11-06 22:00:58,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368445182] [2023-11-06 22:00:58,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:00:58,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:00:58,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:58,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:00:58,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:00:59,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 833 [2023-11-06 22:00:59,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 355 transitions, 8636 flow. Second operand has 7 states, 7 states have (on average 342.14285714285717) internal successors, (2395), 7 states have internal predecessors, (2395), 0 states have call successors, (0), 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 22:00:59,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:59,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 833 [2023-11-06 22:00:59,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:02,234 INFO L124 PetriNetUnfolderBase]: 5406/8683 cut-off events. [2023-11-06 22:01:02,234 INFO L125 PetriNetUnfolderBase]: For 204378/204378 co-relation queries the response was YES. [2023-11-06 22:01:02,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60436 conditions, 8683 events. 5406/8683 cut-off events. For 204378/204378 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 55633 event pairs, 1342 based on Foata normal form. 10/8591 useless extension candidates. Maximal degree in co-relation 60302. Up to 3302 conditions per place. [2023-11-06 22:01:02,408 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 280 selfloop transitions, 141 changer transitions 0/421 dead transitions. [2023-11-06 22:01:02,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 421 transitions, 10026 flow [2023-11-06 22:01:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:01:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:01:02,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2463 transitions. [2023-11-06 22:01:02,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42239753044074774 [2023-11-06 22:01:02,411 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2463 transitions. [2023-11-06 22:01:02,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2463 transitions. [2023-11-06 22:01:02,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:02,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2463 transitions. [2023-11-06 22:01:02,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 351.85714285714283) internal successors, (2463), 7 states have internal predecessors, (2463), 0 states have call successors, (0), 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 22:01:02,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:01:02,416 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:01:02,416 INFO L175 Difference]: Start difference. First operand has 273 places, 355 transitions, 8636 flow. Second operand 7 states and 2463 transitions. [2023-11-06 22:01:02,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 421 transitions, 10026 flow [2023-11-06 22:01:04,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 421 transitions, 9771 flow, removed 13 selfloop flow, removed 6 redundant places. [2023-11-06 22:01:04,364 INFO L231 Difference]: Finished difference. Result has 273 places, 357 transitions, 8765 flow [2023-11-06 22:01:04,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=8362, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8765, PETRI_PLACES=273, PETRI_TRANSITIONS=357} [2023-11-06 22:01:04,364 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2023-11-06 22:01:04,364 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 357 transitions, 8765 flow [2023-11-06 22:01:04,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 342.14285714285717) internal successors, (2395), 7 states have internal predecessors, (2395), 0 states have call successors, (0), 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 22:01:04,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:04,365 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:04,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:01:04,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4abff0-8581-49ea-a1b4-1347471f0693/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:01:04,566 INFO L420 AbstractCegarLoop]: === Iteration 50 === 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 22:01:04,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:04,566 INFO L85 PathProgramCache]: Analyzing trace with hash -2049683826, now seen corresponding path program 23 times [2023-11-06 22:01:04,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:04,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964707859] [2023-11-06 22:01:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:04,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:04,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:01:04,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:04,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964707859] [2023-11-06 22:01:04,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964707859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:04,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:04,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:01:04,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043570144] [2023-11-06 22:01:04,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:04,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:01:04,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:04,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:01:04,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:01:05,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 833 [2023-11-06 22:01:05,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 357 transitions, 8765 flow. Second operand has 8 states, 8 states have (on average 342.75) internal successors, (2742), 8 states have internal predecessors, (2742), 0 states have call successors, (0), 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 22:01:05,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:05,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 833 [2023-11-06 22:01:05,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:08,076 INFO L124 PetriNetUnfolderBase]: 5422/8721 cut-off events. [2023-11-06 22:01:08,076 INFO L125 PetriNetUnfolderBase]: For 208713/208713 co-relation queries the response was YES. [2023-11-06 22:01:08,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60669 conditions, 8721 events. 5422/8721 cut-off events. For 208713/208713 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 56142 event pairs, 1474 based on Foata normal form. 8/8627 useless extension candidates. Maximal degree in co-relation 60536. Up to 5616 conditions per place. [2023-11-06 22:01:08,213 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 276 selfloop transitions, 143 changer transitions 0/419 dead transitions. [2023-11-06 22:01:08,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 419 transitions, 10008 flow [2023-11-06 22:01:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:01:08,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:01:08,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2470 transitions. [2023-11-06 22:01:08,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42359801063282454 [2023-11-06 22:01:08,216 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2470 transitions. [2023-11-06 22:01:08,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2470 transitions. [2023-11-06 22:01:08,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:08,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2470 transitions. [2023-11-06 22:01:08,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 352.85714285714283) internal successors, (2470), 7 states have internal predecessors, (2470), 0 states have call successors, (0), 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 22:01:08,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:01:08,221 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:01:08,221 INFO L175 Difference]: Start difference. First operand has 273 places, 357 transitions, 8765 flow. Second operand 7 states and 2470 transitions. [2023-11-06 22:01:08,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 419 transitions, 10008 flow [2023-11-06 22:01:09,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 419 transitions, 9758 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 22:01:09,940 INFO L231 Difference]: Finished difference. Result has 275 places, 358 transitions, 8823 flow [2023-11-06 22:01:09,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=8490, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8823, PETRI_PLACES=275, PETRI_TRANSITIONS=358} [2023-11-06 22:01:09,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2023-11-06 22:01:09,941 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 358 transitions, 8823 flow [2023-11-06 22:01:09,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 342.75) internal successors, (2742), 8 states have internal predecessors, (2742), 0 states have call successors, (0), 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 22:01:09,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:09,942 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:09,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-11-06 22:01:09,943 INFO L420 AbstractCegarLoop]: === Iteration 51 === 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 22:01:09,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:09,943 INFO L85 PathProgramCache]: Analyzing trace with hash 492282510, now seen corresponding path program 24 times [2023-11-06 22:01:09,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:09,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435985003] [2023-11-06 22:01:09,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:09,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:01:10,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:10,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435985003] [2023-11-06 22:01:10,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435985003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:10,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:10,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:01:10,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366517194] [2023-11-06 22:01:10,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:10,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:01:10,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:10,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:01:10,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:01:10,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 22:01:10,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 358 transitions, 8823 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:01:10,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:10,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 22:01:10,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:13,450 INFO L124 PetriNetUnfolderBase]: 5398/8669 cut-off events. [2023-11-06 22:01:13,451 INFO L125 PetriNetUnfolderBase]: For 213440/213440 co-relation queries the response was YES. [2023-11-06 22:01:13,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61339 conditions, 8669 events. 5398/8669 cut-off events. For 213440/213440 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 55559 event pairs, 1504 based on Foata normal form. 4/8571 useless extension candidates. Maximal degree in co-relation 61206. Up to 5616 conditions per place. [2023-11-06 22:01:13,554 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 270 selfloop transitions, 145 changer transitions 0/415 dead transitions. [2023-11-06 22:01:13,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 415 transitions, 10061 flow [2023-11-06 22:01:13,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:01:13,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:01:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2482 transitions. [2023-11-06 22:01:13,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42565597667638483 [2023-11-06 22:01:13,557 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2482 transitions. [2023-11-06 22:01:13,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2482 transitions. [2023-11-06 22:01:13,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:13,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2482 transitions. [2023-11-06 22:01:13,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.57142857142856) internal successors, (2482), 7 states have internal predecessors, (2482), 0 states have call successors, (0), 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 22:01:13,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:01:13,562 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:01:13,562 INFO L175 Difference]: Start difference. First operand has 275 places, 358 transitions, 8823 flow. Second operand 7 states and 2482 transitions. [2023-11-06 22:01:13,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 415 transitions, 10061 flow [2023-11-06 22:01:15,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 415 transitions, 9817 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-06 22:01:15,209 INFO L231 Difference]: Finished difference. Result has 279 places, 359 transitions, 8893 flow [2023-11-06 22:01:15,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=8580, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8893, PETRI_PLACES=279, PETRI_TRANSITIONS=359} [2023-11-06 22:01:15,209 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2023-11-06 22:01:15,210 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 359 transitions, 8893 flow [2023-11-06 22:01:15,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:01:15,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:15,210 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:15,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-11-06 22:01:15,211 INFO L420 AbstractCegarLoop]: === Iteration 52 === 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 22:01:15,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:15,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1297790492, now seen corresponding path program 25 times [2023-11-06 22:01:15,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:15,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435549380] [2023-11-06 22:01:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:15,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:01:15,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:15,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435549380] [2023-11-06 22:01:15,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435549380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:15,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:15,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:01:15,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187492803] [2023-11-06 22:01:15,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:15,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:01:15,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:15,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:01:15,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:01:15,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 22:01:15,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 359 transitions, 8893 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:01:15,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:15,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 22:01:15,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:18,547 INFO L124 PetriNetUnfolderBase]: 5382/8639 cut-off events. [2023-11-06 22:01:18,547 INFO L125 PetriNetUnfolderBase]: For 214431/214431 co-relation queries the response was YES. [2023-11-06 22:01:18,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61186 conditions, 8639 events. 5382/8639 cut-off events. For 214431/214431 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 55270 event pairs, 1498 based on Foata normal form. 6/8543 useless extension candidates. Maximal degree in co-relation 61052. Up to 5616 conditions per place. [2023-11-06 22:01:18,738 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 270 selfloop transitions, 141 changer transitions 6/417 dead transitions. [2023-11-06 22:01:18,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 417 transitions, 10120 flow [2023-11-06 22:01:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:01:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:01:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2479 transitions. [2023-11-06 22:01:18,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42514148516549477 [2023-11-06 22:01:18,742 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2479 transitions. [2023-11-06 22:01:18,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2479 transitions. [2023-11-06 22:01:18,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:18,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2479 transitions. [2023-11-06 22:01:18,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 354.14285714285717) internal successors, (2479), 7 states have internal predecessors, (2479), 0 states have call successors, (0), 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 22:01:18,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:01:18,994 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:01:18,994 INFO L175 Difference]: Start difference. First operand has 279 places, 359 transitions, 8893 flow. Second operand 7 states and 2479 transitions. [2023-11-06 22:01:18,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 417 transitions, 10120 flow [2023-11-06 22:01:20,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 417 transitions, 9849 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:01:20,532 INFO L231 Difference]: Finished difference. Result has 282 places, 358 transitions, 8882 flow [2023-11-06 22:01:20,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=8622, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8882, PETRI_PLACES=282, PETRI_TRANSITIONS=358} [2023-11-06 22:01:20,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2023-11-06 22:01:20,533 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 358 transitions, 8882 flow [2023-11-06 22:01:20,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:01:20,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:20,534 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:20,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-11-06 22:01:20,534 INFO L420 AbstractCegarLoop]: === Iteration 53 === 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 22:01:20,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1946046128, now seen corresponding path program 26 times [2023-11-06 22:01:20,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:20,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695164280] [2023-11-06 22:01:20,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:20,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:01:20,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:20,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695164280] [2023-11-06 22:01:20,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695164280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:20,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:20,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:01:20,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723375469] [2023-11-06 22:01:20,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:20,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:01:20,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:20,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:01:20,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:01:21,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 833 [2023-11-06 22:01:21,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 358 transitions, 8882 flow. Second operand has 8 states, 8 states have (on average 342.75) internal successors, (2742), 8 states have internal predecessors, (2742), 0 states have call successors, (0), 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 22:01:21,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:21,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 833 [2023-11-06 22:01:21,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:24,136 INFO L124 PetriNetUnfolderBase]: 5361/8588 cut-off events. [2023-11-06 22:01:24,136 INFO L125 PetriNetUnfolderBase]: For 214214/214214 co-relation queries the response was YES. [2023-11-06 22:01:24,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60975 conditions, 8588 events. 5361/8588 cut-off events. For 214214/214214 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 54727 event pairs, 1484 based on Foata normal form. 4/8490 useless extension candidates. Maximal degree in co-relation 60840. Up to 5616 conditions per place. [2023-11-06 22:01:24,233 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 275 selfloop transitions, 143 changer transitions 0/418 dead transitions. [2023-11-06 22:01:24,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 418 transitions, 10112 flow [2023-11-06 22:01:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:01:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:01:24,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2468 transitions. [2023-11-06 22:01:24,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42325501629223117 [2023-11-06 22:01:24,236 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2468 transitions. [2023-11-06 22:01:24,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2468 transitions. [2023-11-06 22:01:24,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:24,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2468 transitions. [2023-11-06 22:01:24,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 352.57142857142856) internal successors, (2468), 7 states have internal predecessors, (2468), 0 states have call successors, (0), 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 22:01:24,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:01:24,240 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:01:24,240 INFO L175 Difference]: Start difference. First operand has 282 places, 358 transitions, 8882 flow. Second operand 7 states and 2468 transitions. [2023-11-06 22:01:24,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 418 transitions, 10112 flow [2023-11-06 22:01:25,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 418 transitions, 9763 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-11-06 22:01:25,872 INFO L231 Difference]: Finished difference. Result has 279 places, 359 transitions, 8825 flow [2023-11-06 22:01:25,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=8498, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8825, PETRI_PLACES=279, PETRI_TRANSITIONS=359} [2023-11-06 22:01:25,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2023-11-06 22:01:25,873 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 359 transitions, 8825 flow [2023-11-06 22:01:25,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 342.75) internal successors, (2742), 8 states have internal predecessors, (2742), 0 states have call successors, (0), 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 22:01:25,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:25,873 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:25,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-11-06 22:01:25,874 INFO L420 AbstractCegarLoop]: === Iteration 54 === 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 22:01:25,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:25,874 INFO L85 PathProgramCache]: Analyzing trace with hash -762560690, now seen corresponding path program 27 times [2023-11-06 22:01:25,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:25,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363551670] [2023-11-06 22:01:25,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:25,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:01:26,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:26,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363551670] [2023-11-06 22:01:26,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363551670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:26,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:26,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:01:26,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950974532] [2023-11-06 22:01:26,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:26,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:01:26,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:26,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:01:26,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:01:26,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 833 [2023-11-06 22:01:26,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 359 transitions, 8825 flow. Second operand has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 22:01:26,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:26,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 833 [2023-11-06 22:01:26,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:01:29,134 INFO L124 PetriNetUnfolderBase]: 5345/8558 cut-off events. [2023-11-06 22:01:29,134 INFO L125 PetriNetUnfolderBase]: For 215210/215210 co-relation queries the response was YES. [2023-11-06 22:01:29,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61473 conditions, 8558 events. 5345/8558 cut-off events. For 215210/215210 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 54436 event pairs, 1492 based on Foata normal form. 6/8462 useless extension candidates. Maximal degree in co-relation 61340. Up to 5616 conditions per place. [2023-11-06 22:01:29,278 INFO L140 encePairwiseOnDemand]: 825/833 looper letters, 264 selfloop transitions, 140 changer transitions 6/410 dead transitions. [2023-11-06 22:01:29,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 410 transitions, 9991 flow [2023-11-06 22:01:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:01:29,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:01:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2459 transitions. [2023-11-06 22:01:29,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421711541759561 [2023-11-06 22:01:29,281 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2459 transitions. [2023-11-06 22:01:29,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2459 transitions. [2023-11-06 22:01:29,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:29,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2459 transitions. [2023-11-06 22:01:29,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 351.2857142857143) internal successors, (2459), 7 states have internal predecessors, (2459), 0 states have call successors, (0), 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 22:01:29,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:01:29,289 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 833.0) internal successors, (6664), 8 states have internal predecessors, (6664), 0 states have call successors, (0), 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 22:01:29,290 INFO L175 Difference]: Start difference. First operand has 279 places, 359 transitions, 8825 flow. Second operand 7 states and 2459 transitions. [2023-11-06 22:01:29,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 410 transitions, 9991 flow [2023-11-06 22:01:31,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 410 transitions, 9731 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 22:01:31,112 INFO L231 Difference]: Finished difference. Result has 282 places, 357 transitions, 8769 flow [2023-11-06 22:01:31,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=833, PETRI_DIFFERENCE_MINUEND_FLOW=8525, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8769, PETRI_PLACES=282, PETRI_TRANSITIONS=357} [2023-11-06 22:01:31,113 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2023-11-06 22:01:31,113 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 357 transitions, 8769 flow [2023-11-06 22:01:31,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 343.14285714285717) internal successors, (2402), 7 states have internal predecessors, (2402), 0 states have call successors, (0), 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 22:01:31,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:01:31,113 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:01:31,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-11-06 22:01:31,114 INFO L420 AbstractCegarLoop]: === Iteration 55 === 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 22:01:31,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:01:31,114 INFO L85 PathProgramCache]: Analyzing trace with hash 386545118, now seen corresponding path program 28 times [2023-11-06 22:01:31,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:01:31,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092183773] [2023-11-06 22:01:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:01:31,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:01:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:01:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:01:31,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:01:31,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092183773] [2023-11-06 22:01:31,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092183773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:01:31,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:01:31,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:01:31,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825661325] [2023-11-06 22:01:31,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:01:31,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:01:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:01:31,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:01:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:01:31,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 833 [2023-11-06 22:01:31,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 357 transitions, 8769 flow. Second operand has 7 states, 7 states have (on average 345.14285714285717) internal successors, (2416), 7 states have internal predecessors, (2416), 0 states have call successors, (0), 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 22:01:31,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:01:31,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 833 [2023-11-06 22:01:31,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand