./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 18:59:12,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 18:59:12,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 18:59:12,362 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 18:59:12,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 18:59:12,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 18:59:12,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 18:59:12,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 18:59:12,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 18:59:12,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 18:59:12,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 18:59:12,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 18:59:12,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 18:59:12,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 18:59:12,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 18:59:12,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 18:59:12,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 18:59:12,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 18:59:12,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 18:59:12,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 18:59:12,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 18:59:12,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 18:59:12,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 18:59:12,410 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 18:59:12,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 18:59:12,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 18:59:12,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 18:59:12,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 18:59:12,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 18:59:12,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 18:59:12,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 18:59:12,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 18:59:12,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 18:59:12,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 18:59:12,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 18:59:12,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 18:59:12,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 18:59:12,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 18:59:12,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 18:59:12,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 18:59:12,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 18:59:12,431 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 18:59:12,460 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 18:59:12,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 18:59:12,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 18:59:12,462 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 18:59:12,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 18:59:12,463 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 18:59:12,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 18:59:12,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 18:59:12,464 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 18:59:12,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 18:59:12,465 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 18:59:12,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 18:59:12,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 18:59:12,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 18:59:12,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 18:59:12,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 18:59:12,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 18:59:12,466 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 18:59:12,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 18:59:12,466 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 18:59:12,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 18:59:12,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 18:59:12,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 18:59:12,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 18:59:12,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:59:12,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 18:59:12,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 18:59:12,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 18:59:12,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 18:59:12,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 18:59:12,469 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 18:59:12,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 18:59:12,469 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 18:59:12,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 18:59:12,469 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 18:59:12,470 INFO L138 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 18:59:12,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 18:59:12,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 18:59:12,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 18:59:12,759 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 18:59:12,760 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 18:59:12,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-30 18:59:13,967 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 18:59:14,140 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 18:59:14,140 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-30 18:59:14,151 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeaca5523/b84b1e00241545c29007205c116fd768/FLAG540dcf5d2 [2023-08-30 18:59:14,163 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eeaca5523/b84b1e00241545c29007205c116fd768 [2023-08-30 18:59:14,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 18:59:14,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 18:59:14,167 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 18:59:14,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 18:59:14,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 18:59:14,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6139353b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14, skipping insertion in model container [2023-08-30 18:59:14,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 18:59:14,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 18:59:14,337 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-30 18:59:14,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:59:14,355 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 18:59:14,380 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-30 18:59:14,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:59:14,396 INFO L208 MainTranslator]: Completed translation [2023-08-30 18:59:14,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14 WrapperNode [2023-08-30 18:59:14,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 18:59:14,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 18:59:14,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 18:59:14,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 18:59:14,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,444 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 316 [2023-08-30 18:59:14,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 18:59:14,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 18:59:14,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 18:59:14,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 18:59:14,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,500 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 18:59:14,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 18:59:14,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 18:59:14,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 18:59:14,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14" (1/1) ... [2023-08-30 18:59:14,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:59:14,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:59:14,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 18:59:14,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 18:59:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 18:59:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 18:59:14,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 18:59:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 18:59:14,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 18:59:14,583 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 18:59:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 18:59:14,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 18:59:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 18:59:14,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 18:59:14,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 18:59:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 18:59:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 18:59:14,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 18:59:14,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 18:59:14,586 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 18:59:14,689 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 18:59:14,690 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 18:59:15,169 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 18:59:15,183 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 18:59:15,184 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 18:59:15,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:59:15 BoogieIcfgContainer [2023-08-30 18:59:15,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 18:59:15,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 18:59:15,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 18:59:15,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 18:59:15,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:59:14" (1/3) ... [2023-08-30 18:59:15,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df78728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:59:15, skipping insertion in model container [2023-08-30 18:59:15,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:59:14" (2/3) ... [2023-08-30 18:59:15,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df78728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:59:15, skipping insertion in model container [2023-08-30 18:59:15,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:59:15" (3/3) ... [2023-08-30 18:59:15,193 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-08-30 18:59:15,200 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 18:59:15,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 18:59:15,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 18:59:15,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 18:59:15,349 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 18:59:15,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 360 transitions, 744 flow [2023-08-30 18:59:15,583 INFO L130 PetriNetUnfolder]: 26/357 cut-off events. [2023-08-30 18:59:15,586 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:59:15,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 357 events. 26/357 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 808 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 268. Up to 2 conditions per place. [2023-08-30 18:59:15,598 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 360 transitions, 744 flow [2023-08-30 18:59:15,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 347 transitions, 712 flow [2023-08-30 18:59:15,612 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 18:59:15,634 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 347 transitions, 712 flow [2023-08-30 18:59:15,638 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 347 transitions, 712 flow [2023-08-30 18:59:15,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 347 transitions, 712 flow [2023-08-30 18:59:15,714 INFO L130 PetriNetUnfolder]: 26/347 cut-off events. [2023-08-30 18:59:15,715 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:59:15,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 347 events. 26/347 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 807 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 268. Up to 2 conditions per place. [2023-08-30 18:59:15,732 INFO L119 LiptonReduction]: Number of co-enabled transitions 28350 [2023-08-30 18:59:25,633 INFO L134 LiptonReduction]: Checked pairs total: 26332 [2023-08-30 18:59:25,633 INFO L136 LiptonReduction]: Total number of compositions: 411 [2023-08-30 18:59:25,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 18:59:25,650 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;@41f93826, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 18:59:25,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 18:59:25,656 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-08-30 18:59:25,657 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:59:25,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:25,658 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] [2023-08-30 18:59:25,658 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)] === [2023-08-30 18:59:25,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:25,663 INFO L85 PathProgramCache]: Analyzing trace with hash 938001691, now seen corresponding path program 1 times [2023-08-30 18:59:25,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:25,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710223398] [2023-08-30 18:59:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:25,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:59:26,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:26,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710223398] [2023-08-30 18:59:26,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710223398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:26,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:26,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 18:59:26,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688904581] [2023-08-30 18:59:26,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:26,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 18:59:26,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 18:59:26,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 18:59:26,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 771 [2023-08-30 18:59:26,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:26,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:26,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 771 [2023-08-30 18:59:26,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:26,381 INFO L130 PetriNetUnfolder]: 221/328 cut-off events. [2023-08-30 18:59:26,381 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 18:59:26,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 328 events. 221/328 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 771 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. [2023-08-30 18:59:26,384 INFO L137 encePairwiseOnDemand]: 768/771 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-30 18:59:26,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 118 flow [2023-08-30 18:59:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 18:59:26,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 18:59:26,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2023-08-30 18:59:26,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43925637699956765 [2023-08-30 18:59:26,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2023-08-30 18:59:26,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2023-08-30 18:59:26,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:26,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2023-08-30 18:59:26,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:26,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 771.0) internal successors, (3084), 4 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:26,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 771.0) internal successors, (3084), 4 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:26,431 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 1016 transitions. [2023-08-30 18:59:26,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 118 flow [2023-08-30 18:59:26,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 18:59:26,438 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 66 flow [2023-08-30 18:59:26,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, 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} [2023-08-30 18:59:26,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-08-30 18:59:26,444 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 66 flow [2023-08-30 18:59:26,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.6666666666667) internal successors, (1010), 3 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:26,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:26,445 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] [2023-08-30 18:59:26,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 18:59:26,447 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)] === [2023-08-30 18:59:26,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:26,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1524160958, now seen corresponding path program 1 times [2023-08-30 18:59:26,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:26,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299091031] [2023-08-30 18:59:26,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:26,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:59:26,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:26,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299091031] [2023-08-30 18:59:26,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299091031] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 18:59:26,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008683668] [2023-08-30 18:59:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:26,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:59:26,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:59:26,641 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 18:59:26,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 18:59:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:26,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 18:59:26,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 18:59:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:59:26,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 18:59:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:59:26,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008683668] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 18:59:26,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 18:59:26,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 18:59:26,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526099484] [2023-08-30 18:59:26,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 18:59:26,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:59:26,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:26,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:59:26,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:59:26,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 771 [2023-08-30 18:59:26,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 331.85714285714283) internal successors, (2323), 7 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:26,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:26,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 771 [2023-08-30 18:59:26,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:27,072 INFO L130 PetriNetUnfolder]: 221/330 cut-off events. [2023-08-30 18:59:27,073 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 18:59:27,073 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 771 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. [2023-08-30 18:59:27,074 INFO L137 encePairwiseOnDemand]: 768/771 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-08-30 18:59:27,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 128 flow [2023-08-30 18:59:27,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 18:59:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 18:59:27,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1669 transitions. [2023-08-30 18:59:27,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329442282749676 [2023-08-30 18:59:27,080 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1669 transitions. [2023-08-30 18:59:27,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1669 transitions. [2023-08-30 18:59:27,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:27,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1669 transitions. [2023-08-30 18:59:27,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 333.8) internal successors, (1669), 5 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:27,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 771.0) internal successors, (4626), 6 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:27,094 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 771.0) internal successors, (4626), 6 states have internal predecessors, (4626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:27,094 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 66 flow. Second operand 5 states and 1669 transitions. [2023-08-30 18:59:27,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 128 flow [2023-08-30 18:59:27,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 124 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 18:59:27,096 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 88 flow [2023-08-30 18:59:27,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, 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} [2023-08-30 18:59:27,097 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-30 18:59:27,097 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 88 flow [2023-08-30 18:59:27,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 331.85714285714283) internal successors, (2323), 7 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:27,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:27,099 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] [2023-08-30 18:59:27,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 18:59:27,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 18:59:27,308 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)] === [2023-08-30 18:59:27,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash -793936030, now seen corresponding path program 2 times [2023-08-30 18:59:27,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:27,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016492600] [2023-08-30 18:59:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:28,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:28,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016492600] [2023-08-30 18:59:28,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016492600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:28,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:28,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 18:59:28,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647047449] [2023-08-30 18:59:28,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:28,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:59:28,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:28,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:59:28,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:59:28,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 771 [2023-08-30 18:59:28,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:28,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:28,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 771 [2023-08-30 18:59:28,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:28,644 INFO L130 PetriNetUnfolder]: 391/589 cut-off events. [2023-08-30 18:59:28,644 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 18:59:28,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 589 events. 391/589 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1862 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. [2023-08-30 18:59:28,647 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 59 selfloop transitions, 5 changer transitions 10/74 dead transitions. [2023-08-30 18:59:28,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 74 transitions, 341 flow [2023-08-30 18:59:28,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:59:28,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:59:28,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1884 transitions. [2023-08-30 18:59:28,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072632944228275 [2023-08-30 18:59:28,653 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1884 transitions. [2023-08-30 18:59:28,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1884 transitions. [2023-08-30 18:59:28,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:28,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1884 transitions. [2023-08-30 18:59:28,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:28,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:28,669 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:28,669 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 88 flow. Second operand 6 states and 1884 transitions. [2023-08-30 18:59:28,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 74 transitions, 341 flow [2023-08-30 18:59:28,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 331 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 18:59:28,675 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 116 flow [2023-08-30 18:59:28,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, 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} [2023-08-30 18:59:28,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-08-30 18:59:28,677 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 116 flow [2023-08-30 18:59:28,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:28,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:28,679 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] [2023-08-30 18:59:28,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 18:59:28,679 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)] === [2023-08-30 18:59:28,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:28,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1410407670, now seen corresponding path program 3 times [2023-08-30 18:59:28,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:28,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484597619] [2023-08-30 18:59:28,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:28,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:29,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:29,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484597619] [2023-08-30 18:59:29,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484597619] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:29,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:29,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 18:59:29,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337839228] [2023-08-30 18:59:29,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:29,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:59:29,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:29,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:59:29,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:59:29,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 771 [2023-08-30 18:59:29,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:29,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:29,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 771 [2023-08-30 18:59:29,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:29,864 INFO L130 PetriNetUnfolder]: 598/896 cut-off events. [2023-08-30 18:59:29,864 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2023-08-30 18:59:29,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 896 events. 598/896 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3127 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. [2023-08-30 18:59:29,870 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 61 selfloop transitions, 7 changer transitions 10/78 dead transitions. [2023-08-30 18:59:29,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 78 transitions, 416 flow [2023-08-30 18:59:29,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:59:29,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:59:29,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1880 transitions. [2023-08-30 18:59:29,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40639861651534803 [2023-08-30 18:59:29,876 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1880 transitions. [2023-08-30 18:59:29,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1880 transitions. [2023-08-30 18:59:29,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:29,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1880 transitions. [2023-08-30 18:59:29,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.3333333333333) internal successors, (1880), 6 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:29,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:29,891 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:29,891 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 116 flow. Second operand 6 states and 1880 transitions. [2023-08-30 18:59:29,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 78 transitions, 416 flow [2023-08-30 18:59:29,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 395 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:29,897 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 158 flow [2023-08-30 18:59:29,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, 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} [2023-08-30 18:59:29,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2023-08-30 18:59:29,898 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 158 flow [2023-08-30 18:59:29,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:29,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:29,900 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] [2023-08-30 18:59:29,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 18:59:29,900 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)] === [2023-08-30 18:59:29,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:29,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1289977774, now seen corresponding path program 4 times [2023-08-30 18:59:29,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:29,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497170911] [2023-08-30 18:59:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:29,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:30,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:30,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:30,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497170911] [2023-08-30 18:59:30,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497170911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:30,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:30,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:59:30,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714638685] [2023-08-30 18:59:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:30,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 18:59:30,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:30,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 18:59:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 18:59:30,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 771 [2023-08-30 18:59:30,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 158 flow. Second operand has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:30,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:30,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 771 [2023-08-30 18:59:30,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:31,622 INFO L130 PetriNetUnfolder]: 1264/1955 cut-off events. [2023-08-30 18:59:31,622 INFO L131 PetriNetUnfolder]: For 2770/2770 co-relation queries the response was YES. [2023-08-30 18:59:31,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6252 conditions, 1955 events. 1264/1955 cut-off events. For 2770/2770 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8935 event pairs, 428 based on Foata normal form. 2/1613 useless extension candidates. Maximal degree in co-relation 6222. Up to 875 conditions per place. [2023-08-30 18:59:31,634 INFO L137 encePairwiseOnDemand]: 761/771 looper letters, 108 selfloop transitions, 14 changer transitions 3/125 dead transitions. [2023-08-30 18:59:31,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 125 transitions, 822 flow [2023-08-30 18:59:31,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2209 transitions. [2023-08-30 18:59:31,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40930146377617194 [2023-08-30 18:59:31,641 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2209 transitions. [2023-08-30 18:59:31,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2209 transitions. [2023-08-30 18:59:31,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:31,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2209 transitions. [2023-08-30 18:59:31,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 315.57142857142856) internal successors, (2209), 7 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,658 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,658 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 158 flow. Second operand 7 states and 2209 transitions. [2023-08-30 18:59:31,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 125 transitions, 822 flow [2023-08-30 18:59:31,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 125 transitions, 771 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:31,667 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 298 flow [2023-08-30 18:59:31,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=298, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-30 18:59:31,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2023-08-30 18:59:31,670 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 298 flow [2023-08-30 18:59:31,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:31,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:31,671 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] [2023-08-30 18:59:31,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 18:59:31,672 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)] === [2023-08-30 18:59:31,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:31,672 INFO L85 PathProgramCache]: Analyzing trace with hash 769737702, now seen corresponding path program 5 times [2023-08-30 18:59:31,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:31,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176599011] [2023-08-30 18:59:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:31,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:32,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:32,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176599011] [2023-08-30 18:59:32,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176599011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:32,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:32,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:59:32,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004059053] [2023-08-30 18:59:32,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:32,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 18:59:32,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 18:59:32,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 18:59:33,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 771 [2023-08-30 18:59:33,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 299.625) internal successors, (2397), 8 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:33,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:33,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 771 [2023-08-30 18:59:33,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:34,084 INFO L130 PetriNetUnfolder]: 1619/2534 cut-off events. [2023-08-30 18:59:34,084 INFO L131 PetriNetUnfolder]: For 5277/5277 co-relation queries the response was YES. [2023-08-30 18:59:34,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9384 conditions, 2534 events. 1619/2534 cut-off events. For 5277/5277 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12597 event pairs, 224 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 9350. Up to 1584 conditions per place. [2023-08-30 18:59:34,102 INFO L137 encePairwiseOnDemand]: 761/771 looper letters, 78 selfloop transitions, 33 changer transitions 3/114 dead transitions. [2023-08-30 18:59:34,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 114 transitions, 836 flow [2023-08-30 18:59:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2154 transitions. [2023-08-30 18:59:34,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991106170094497 [2023-08-30 18:59:34,109 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2154 transitions. [2023-08-30 18:59:34,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2154 transitions. [2023-08-30 18:59:34,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:34,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2154 transitions. [2023-08-30 18:59:34,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 307.7142857142857) internal successors, (2154), 7 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,136 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,137 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 298 flow. Second operand 7 states and 2154 transitions. [2023-08-30 18:59:34,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 114 transitions, 836 flow [2023-08-30 18:59:34,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 114 transitions, 813 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-30 18:59:34,146 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 596 flow [2023-08-30 18:59:34,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=596, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-08-30 18:59:34,150 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2023-08-30 18:59:34,150 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 596 flow [2023-08-30 18:59:34,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 299.625) internal successors, (2397), 8 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:34,152 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] [2023-08-30 18:59:34,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 18:59:34,152 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)] === [2023-08-30 18:59:34,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:34,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1478770490, now seen corresponding path program 6 times [2023-08-30 18:59:34,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:34,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864706105] [2023-08-30 18:59:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:34,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:34,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:34,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:34,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864706105] [2023-08-30 18:59:34,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864706105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:34,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:34,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 18:59:34,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884176344] [2023-08-30 18:59:34,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:34,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:59:34,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:34,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:59:34,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:59:34,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 771 [2023-08-30 18:59:34,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 596 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:34,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:34,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 771 [2023-08-30 18:59:34,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:35,534 INFO L130 PetriNetUnfolder]: 1623/2565 cut-off events. [2023-08-30 18:59:35,534 INFO L131 PetriNetUnfolder]: For 9351/9351 co-relation queries the response was YES. [2023-08-30 18:59:35,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11143 conditions, 2565 events. 1623/2565 cut-off events. For 9351/9351 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12669 event pairs, 490 based on Foata normal form. 3/2218 useless extension candidates. Maximal degree in co-relation 11104. Up to 1223 conditions per place. [2023-08-30 18:59:35,555 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 92 selfloop transitions, 19 changer transitions 12/123 dead transitions. [2023-08-30 18:59:35,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 123 transitions, 1110 flow [2023-08-30 18:59:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:59:35,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:59:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1883 transitions. [2023-08-30 18:59:35,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40704712494595763 [2023-08-30 18:59:35,562 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1883 transitions. [2023-08-30 18:59:35,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1883 transitions. [2023-08-30 18:59:35,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:35,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1883 transitions. [2023-08-30 18:59:35,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.8333333333333) internal successors, (1883), 6 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:35,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:35,573 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:35,573 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 596 flow. Second operand 6 states and 1883 transitions. [2023-08-30 18:59:35,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 123 transitions, 1110 flow [2023-08-30 18:59:35,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 123 transitions, 1046 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-08-30 18:59:35,599 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 676 flow [2023-08-30 18:59:35,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=676, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2023-08-30 18:59:35,600 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2023-08-30 18:59:35,601 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 676 flow [2023-08-30 18:59:35,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:35,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:35,602 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] [2023-08-30 18:59:35,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 18:59:35,602 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)] === [2023-08-30 18:59:35,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:35,603 INFO L85 PathProgramCache]: Analyzing trace with hash 337044488, now seen corresponding path program 7 times [2023-08-30 18:59:35,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:35,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806410632] [2023-08-30 18:59:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:35,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:36,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:36,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806410632] [2023-08-30 18:59:36,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806410632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:36,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:36,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 18:59:36,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683824591] [2023-08-30 18:59:36,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:36,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:59:36,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:36,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:59:36,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:59:36,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 771 [2023-08-30 18:59:36,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 676 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:36,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:36,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 771 [2023-08-30 18:59:36,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:37,008 INFO L130 PetriNetUnfolder]: 1595/2508 cut-off events. [2023-08-30 18:59:37,008 INFO L131 PetriNetUnfolder]: For 10169/10169 co-relation queries the response was YES. [2023-08-30 18:59:37,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11459 conditions, 2508 events. 1595/2508 cut-off events. For 10169/10169 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12343 event pairs, 530 based on Foata normal form. 2/2162 useless extension candidates. Maximal degree in co-relation 11416. Up to 1479 conditions per place. [2023-08-30 18:59:37,028 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 97 selfloop transitions, 29 changer transitions 15/141 dead transitions. [2023-08-30 18:59:37,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 141 transitions, 1348 flow [2023-08-30 18:59:37,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:59:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:59:37,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1887 transitions. [2023-08-30 18:59:37,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4079118028534371 [2023-08-30 18:59:37,033 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1887 transitions. [2023-08-30 18:59:37,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1887 transitions. [2023-08-30 18:59:37,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:37,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1887 transitions. [2023-08-30 18:59:37,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.5) internal successors, (1887), 6 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:37,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:37,044 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:37,044 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 676 flow. Second operand 6 states and 1887 transitions. [2023-08-30 18:59:37,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 141 transitions, 1348 flow [2023-08-30 18:59:37,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 141 transitions, 1310 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:37,069 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 828 flow [2023-08-30 18:59:37,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=828, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2023-08-30 18:59:37,070 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2023-08-30 18:59:37,071 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 828 flow [2023-08-30 18:59:37,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:37,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:37,071 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] [2023-08-30 18:59:37,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 18:59:37,072 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)] === [2023-08-30 18:59:37,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash -97285908, now seen corresponding path program 8 times [2023-08-30 18:59:37,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684983033] [2023-08-30 18:59:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:37,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:37,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:37,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684983033] [2023-08-30 18:59:37,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684983033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:37,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:37,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 18:59:37,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069101578] [2023-08-30 18:59:37,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:37,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:59:37,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:37,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:59:37,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:59:37,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 771 [2023-08-30 18:59:37,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 828 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:37,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:37,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 771 [2023-08-30 18:59:37,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:38,303 INFO L130 PetriNetUnfolder]: 1565/2439 cut-off events. [2023-08-30 18:59:38,304 INFO L131 PetriNetUnfolder]: For 10775/10775 co-relation queries the response was YES. [2023-08-30 18:59:38,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11350 conditions, 2439 events. 1565/2439 cut-off events. For 10775/10775 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11714 event pairs, 530 based on Foata normal form. 3/2096 useless extension candidates. Maximal degree in co-relation 11305. Up to 1479 conditions per place. [2023-08-30 18:59:38,330 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 91 selfloop transitions, 26 changer transitions 15/132 dead transitions. [2023-08-30 18:59:38,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 132 transitions, 1328 flow [2023-08-30 18:59:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:59:38,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:59:38,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1883 transitions. [2023-08-30 18:59:38,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40704712494595763 [2023-08-30 18:59:38,336 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1883 transitions. [2023-08-30 18:59:38,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1883 transitions. [2023-08-30 18:59:38,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:38,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1883 transitions. [2023-08-30 18:59:38,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.8333333333333) internal successors, (1883), 6 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:38,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:38,348 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:38,348 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 828 flow. Second operand 6 states and 1883 transitions. [2023-08-30 18:59:38,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 132 transitions, 1328 flow [2023-08-30 18:59:38,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 132 transitions, 1320 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 18:59:38,372 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 869 flow [2023-08-30 18:59:38,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=869, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2023-08-30 18:59:38,373 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2023-08-30 18:59:38,374 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 869 flow [2023-08-30 18:59:38,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:38,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:38,375 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] [2023-08-30 18:59:38,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 18:59:38,375 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)] === [2023-08-30 18:59:38,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:38,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1951623602, now seen corresponding path program 9 times [2023-08-30 18:59:38,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:38,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407118687] [2023-08-30 18:59:38,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:38,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:38,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:38,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407118687] [2023-08-30 18:59:38,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407118687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:38,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:38,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 18:59:38,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12511699] [2023-08-30 18:59:38,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:38,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 18:59:38,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:38,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 18:59:38,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 18:59:39,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 771 [2023-08-30 18:59:39,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 869 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:39,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:39,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 771 [2023-08-30 18:59:39,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:39,574 INFO L130 PetriNetUnfolder]: 1537/2381 cut-off events. [2023-08-30 18:59:39,574 INFO L131 PetriNetUnfolder]: For 12541/12541 co-relation queries the response was YES. [2023-08-30 18:59:39,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11557 conditions, 2381 events. 1537/2381 cut-off events. For 12541/12541 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11179 event pairs, 484 based on Foata normal form. 3/2040 useless extension candidates. Maximal degree in co-relation 11510. Up to 1223 conditions per place. [2023-08-30 18:59:39,591 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 88 selfloop transitions, 26 changer transitions 12/126 dead transitions. [2023-08-30 18:59:39,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 126 transitions, 1333 flow [2023-08-30 18:59:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 18:59:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 18:59:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1881 transitions. [2023-08-30 18:59:39,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066147859922179 [2023-08-30 18:59:39,596 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1881 transitions. [2023-08-30 18:59:39,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1881 transitions. [2023-08-30 18:59:39,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:39,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1881 transitions. [2023-08-30 18:59:39,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 313.5) internal successors, (1881), 6 states have internal predecessors, (1881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:39,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:39,607 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:39,607 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 869 flow. Second operand 6 states and 1881 transitions. [2023-08-30 18:59:39,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 126 transitions, 1333 flow [2023-08-30 18:59:39,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 126 transitions, 1290 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 18:59:39,640 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 920 flow [2023-08-30 18:59:39,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=920, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2023-08-30 18:59:39,642 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-08-30 18:59:39,642 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 920 flow [2023-08-30 18:59:39,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:39,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:39,643 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] [2023-08-30 18:59:39,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 18:59:39,643 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)] === [2023-08-30 18:59:39,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:39,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1598507779, now seen corresponding path program 1 times [2023-08-30 18:59:39,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:39,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800861659] [2023-08-30 18:59:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:40,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:40,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:40,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800861659] [2023-08-30 18:59:40,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800861659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:40,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:40,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 18:59:40,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139433468] [2023-08-30 18:59:40,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:40,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 18:59:40,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:40,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 18:59:40,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 18:59:40,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 771 [2023-08-30 18:59:40,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 920 flow. Second operand has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 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) [2023-08-30 18:59:40,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:40,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 771 [2023-08-30 18:59:40,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:41,084 INFO L130 PetriNetUnfolder]: 2107/3260 cut-off events. [2023-08-30 18:59:41,084 INFO L131 PetriNetUnfolder]: For 20971/20971 co-relation queries the response was YES. [2023-08-30 18:59:41,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16124 conditions, 3260 events. 2107/3260 cut-off events. For 20971/20971 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16865 event pairs, 424 based on Foata normal form. 10/2800 useless extension candidates. Maximal degree in co-relation 16075. Up to 1161 conditions per place. [2023-08-30 18:59:41,102 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 217 selfloop transitions, 23 changer transitions 0/240 dead transitions. [2023-08-30 18:59:41,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 240 transitions, 2960 flow [2023-08-30 18:59:41,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:41,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2252 transitions. [2023-08-30 18:59:41,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41726885306651845 [2023-08-30 18:59:41,109 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2252 transitions. [2023-08-30 18:59:41,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2252 transitions. [2023-08-30 18:59:41,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:41,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2252 transitions. [2023-08-30 18:59:41,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.7142857142857) internal successors, (2252), 7 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:41,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:41,121 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:41,121 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 920 flow. Second operand 7 states and 2252 transitions. [2023-08-30 18:59:41,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 240 transitions, 2960 flow [2023-08-30 18:59:41,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 240 transitions, 2863 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:41,161 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 1212 flow [2023-08-30 18:59:41,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1212, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2023-08-30 18:59:41,162 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2023-08-30 18:59:41,162 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 1212 flow [2023-08-30 18:59:41,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 310.75) internal successors, (2486), 8 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) [2023-08-30 18:59:41,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:41,163 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] [2023-08-30 18:59:41,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 18:59:41,164 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)] === [2023-08-30 18:59:41,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:41,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1705182456, now seen corresponding path program 1 times [2023-08-30 18:59:41,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:41,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403510900] [2023-08-30 18:59:41,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:41,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:41,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:41,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403510900] [2023-08-30 18:59:41,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403510900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:41,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:41,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 18:59:41,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397518229] [2023-08-30 18:59:41,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:41,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 18:59:41,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:41,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 18:59:41,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 18:59:41,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 18:59:41,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 1212 flow. Second operand has 8 states, 8 states have (on average 313.75) internal successors, (2510), 8 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:41,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:41,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 18:59:41,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:42,582 INFO L130 PetriNetUnfolder]: 2345/3622 cut-off events. [2023-08-30 18:59:42,582 INFO L131 PetriNetUnfolder]: For 22615/22615 co-relation queries the response was YES. [2023-08-30 18:59:42,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18647 conditions, 3622 events. 2345/3622 cut-off events. For 22615/22615 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 18662 event pairs, 320 based on Foata normal form. 4/3332 useless extension candidates. Maximal degree in co-relation 18594. Up to 1578 conditions per place. [2023-08-30 18:59:42,603 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 143 selfloop transitions, 28 changer transitions 0/171 dead transitions. [2023-08-30 18:59:42,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 171 transitions, 2057 flow [2023-08-30 18:59:42,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:42,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2254 transitions. [2023-08-30 18:59:42,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176394293125811 [2023-08-30 18:59:42,609 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2254 transitions. [2023-08-30 18:59:42,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2254 transitions. [2023-08-30 18:59:42,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:42,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2254 transitions. [2023-08-30 18:59:42,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:42,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:42,620 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:42,620 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 1212 flow. Second operand 7 states and 2254 transitions. [2023-08-30 18:59:42,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 171 transitions, 2057 flow [2023-08-30 18:59:42,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 171 transitions, 2007 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-30 18:59:42,693 INFO L231 Difference]: Finished difference. Result has 103 places, 106 transitions, 1404 flow [2023-08-30 18:59:42,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1404, PETRI_PLACES=103, PETRI_TRANSITIONS=106} [2023-08-30 18:59:42,694 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2023-08-30 18:59:42,694 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 106 transitions, 1404 flow [2023-08-30 18:59:42,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 313.75) internal successors, (2510), 8 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:42,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:42,695 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] [2023-08-30 18:59:42,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 18:59:42,695 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)] === [2023-08-30 18:59:42,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:42,696 INFO L85 PathProgramCache]: Analyzing trace with hash 740274830, now seen corresponding path program 2 times [2023-08-30 18:59:42,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:42,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042768347] [2023-08-30 18:59:42,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:42,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:43,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:43,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042768347] [2023-08-30 18:59:43,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042768347] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:43,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:43,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:59:43,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877655315] [2023-08-30 18:59:43,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:43,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:59:43,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:43,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:59:43,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:59:43,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 18:59:43,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 106 transitions, 1404 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:43,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:43,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 18:59:43,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:44,388 INFO L130 PetriNetUnfolder]: 2379/3710 cut-off events. [2023-08-30 18:59:44,388 INFO L131 PetriNetUnfolder]: For 32210/32210 co-relation queries the response was YES. [2023-08-30 18:59:44,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19766 conditions, 3710 events. 2379/3710 cut-off events. For 32210/32210 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19661 event pairs, 354 based on Foata normal form. 6/3410 useless extension candidates. Maximal degree in co-relation 19709. Up to 1201 conditions per place. [2023-08-30 18:59:44,411 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 166 selfloop transitions, 88 changer transitions 3/257 dead transitions. [2023-08-30 18:59:44,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 257 transitions, 3337 flow [2023-08-30 18:59:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 18:59:44,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 18:59:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3493 transitions. [2023-08-30 18:59:44,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41186180874896827 [2023-08-30 18:59:44,420 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3493 transitions. [2023-08-30 18:59:44,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3493 transitions. [2023-08-30 18:59:44,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:44,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3493 transitions. [2023-08-30 18:59:44,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 317.54545454545456) internal successors, (3493), 11 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:44,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 771.0) internal successors, (9252), 12 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:44,436 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 771.0) internal successors, (9252), 12 states have internal predecessors, (9252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:44,436 INFO L175 Difference]: Start difference. First operand has 103 places, 106 transitions, 1404 flow. Second operand 11 states and 3493 transitions. [2023-08-30 18:59:44,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 257 transitions, 3337 flow [2023-08-30 18:59:44,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 257 transitions, 3171 flow, removed 58 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:44,519 INFO L231 Difference]: Finished difference. Result has 119 places, 156 transitions, 2288 flow [2023-08-30 18:59:44,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2288, PETRI_PLACES=119, PETRI_TRANSITIONS=156} [2023-08-30 18:59:44,520 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2023-08-30 18:59:44,520 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 156 transitions, 2288 flow [2023-08-30 18:59:44,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:44,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:44,521 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] [2023-08-30 18:59:44,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 18:59:44,521 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)] === [2023-08-30 18:59:44,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:44,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1868110369, now seen corresponding path program 2 times [2023-08-30 18:59:44,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:44,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885386232] [2023-08-30 18:59:44,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:44,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:44,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:44,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885386232] [2023-08-30 18:59:44,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885386232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:44,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:44,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 18:59:44,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158569883] [2023-08-30 18:59:44,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:44,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 18:59:44,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:44,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 18:59:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-30 18:59:45,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 771 [2023-08-30 18:59:45,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 156 transitions, 2288 flow. Second operand has 8 states, 8 states have (on average 307.75) internal successors, (2462), 8 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) [2023-08-30 18:59:45,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:45,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 771 [2023-08-30 18:59:45,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:46,087 INFO L130 PetriNetUnfolder]: 2632/4095 cut-off events. [2023-08-30 18:59:46,087 INFO L131 PetriNetUnfolder]: For 37908/37908 co-relation queries the response was YES. [2023-08-30 18:59:46,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23548 conditions, 4095 events. 2632/4095 cut-off events. For 37908/37908 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21943 event pairs, 360 based on Foata normal form. 10/4005 useless extension candidates. Maximal degree in co-relation 23483. Up to 1949 conditions per place. [2023-08-30 18:59:46,117 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 170 selfloop transitions, 62 changer transitions 0/232 dead transitions. [2023-08-30 18:59:46,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 232 transitions, 3301 flow [2023-08-30 18:59:46,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:46,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:46,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2220 transitions. [2023-08-30 18:59:46,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4113396331295164 [2023-08-30 18:59:46,122 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2220 transitions. [2023-08-30 18:59:46,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2220 transitions. [2023-08-30 18:59:46,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:46,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2220 transitions. [2023-08-30 18:59:46,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:46,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:46,132 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:46,132 INFO L175 Difference]: Start difference. First operand has 119 places, 156 transitions, 2288 flow. Second operand 7 states and 2220 transitions. [2023-08-30 18:59:46,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 232 transitions, 3301 flow [2023-08-30 18:59:46,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 232 transitions, 3149 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-08-30 18:59:46,275 INFO L231 Difference]: Finished difference. Result has 125 places, 161 transitions, 2422 flow [2023-08-30 18:59:46,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2422, PETRI_PLACES=125, PETRI_TRANSITIONS=161} [2023-08-30 18:59:46,277 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2023-08-30 18:59:46,277 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 161 transitions, 2422 flow [2023-08-30 18:59:46,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 307.75) internal successors, (2462), 8 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) [2023-08-30 18:59:46,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:46,278 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] [2023-08-30 18:59:46,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 18:59:46,279 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)] === [2023-08-30 18:59:46,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:46,279 INFO L85 PathProgramCache]: Analyzing trace with hash -88271522, now seen corresponding path program 3 times [2023-08-30 18:59:46,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:46,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326841743] [2023-08-30 18:59:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:46,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:46,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:46,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326841743] [2023-08-30 18:59:46,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326841743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:46,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:46,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:59:46,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798741241] [2023-08-30 18:59:46,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:46,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:59:46,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:46,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:59:46,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:59:46,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 18:59:46,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 161 transitions, 2422 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:46,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:46,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 18:59:46,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:47,675 INFO L130 PetriNetUnfolder]: 2656/4141 cut-off events. [2023-08-30 18:59:47,675 INFO L131 PetriNetUnfolder]: For 44803/44803 co-relation queries the response was YES. [2023-08-30 18:59:47,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23933 conditions, 4141 events. 2656/4141 cut-off events. For 44803/44803 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22373 event pairs, 510 based on Foata normal form. 8/4049 useless extension candidates. Maximal degree in co-relation 23867. Up to 1987 conditions per place. [2023-08-30 18:59:47,697 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 239 selfloop transitions, 45 changer transitions 0/284 dead transitions. [2023-08-30 18:59:47,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 284 transitions, 4336 flow [2023-08-30 18:59:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:47,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2251 transitions. [2023-08-30 18:59:47,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41708356494348714 [2023-08-30 18:59:47,702 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2251 transitions. [2023-08-30 18:59:47,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2251 transitions. [2023-08-30 18:59:47,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:47,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2251 transitions. [2023-08-30 18:59:47,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.57142857142856) internal successors, (2251), 7 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:47,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:47,711 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:47,711 INFO L175 Difference]: Start difference. First operand has 125 places, 161 transitions, 2422 flow. Second operand 7 states and 2251 transitions. [2023-08-30 18:59:47,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 284 transitions, 4336 flow [2023-08-30 18:59:47,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 284 transitions, 4206 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-08-30 18:59:47,834 INFO L231 Difference]: Finished difference. Result has 132 places, 171 transitions, 2637 flow [2023-08-30 18:59:47,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2637, PETRI_PLACES=132, PETRI_TRANSITIONS=171} [2023-08-30 18:59:47,834 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2023-08-30 18:59:47,835 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 171 transitions, 2637 flow [2023-08-30 18:59:47,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:47,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:47,835 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] [2023-08-30 18:59:47,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 18:59:47,836 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)] === [2023-08-30 18:59:47,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:47,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1399279322, now seen corresponding path program 4 times [2023-08-30 18:59:47,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:47,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757181909] [2023-08-30 18:59:47,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:47,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:48,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:48,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:48,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757181909] [2023-08-30 18:59:48,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757181909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:48,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:48,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:59:48,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127036088] [2023-08-30 18:59:48,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:59:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:59:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:59:48,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 771 [2023-08-30 18:59:48,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 171 transitions, 2637 flow. Second operand has 7 states, 7 states have (on average 309.14285714285717) internal successors, (2164), 7 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:48,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:48,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 771 [2023-08-30 18:59:48,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:49,278 INFO L130 PetriNetUnfolder]: 2650/4135 cut-off events. [2023-08-30 18:59:49,278 INFO L131 PetriNetUnfolder]: For 44143/44143 co-relation queries the response was YES. [2023-08-30 18:59:49,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24232 conditions, 4135 events. 2650/4135 cut-off events. For 44143/44143 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22382 event pairs, 508 based on Foata normal form. 6/4041 useless extension candidates. Maximal degree in co-relation 24163. Up to 1987 conditions per place. [2023-08-30 18:59:49,313 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 229 selfloop transitions, 44 changer transitions 8/281 dead transitions. [2023-08-30 18:59:49,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 281 transitions, 4328 flow [2023-08-30 18:59:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2224 transitions. [2023-08-30 18:59:49,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41208078562164163 [2023-08-30 18:59:49,318 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2224 transitions. [2023-08-30 18:59:49,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2224 transitions. [2023-08-30 18:59:49,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:49,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2224 transitions. [2023-08-30 18:59:49,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 317.7142857142857) internal successors, (2224), 7 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:49,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:49,328 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:49,328 INFO L175 Difference]: Start difference. First operand has 132 places, 171 transitions, 2637 flow. Second operand 7 states and 2224 transitions. [2023-08-30 18:59:49,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 281 transitions, 4328 flow [2023-08-30 18:59:49,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 281 transitions, 4232 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-30 18:59:49,534 INFO L231 Difference]: Finished difference. Result has 136 places, 173 transitions, 2668 flow [2023-08-30 18:59:49,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2668, PETRI_PLACES=136, PETRI_TRANSITIONS=173} [2023-08-30 18:59:49,535 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2023-08-30 18:59:49,535 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 173 transitions, 2668 flow [2023-08-30 18:59:49,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 309.14285714285717) internal successors, (2164), 7 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:49,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:49,536 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] [2023-08-30 18:59:49,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 18:59:49,537 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)] === [2023-08-30 18:59:49,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:49,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1257207031, now seen corresponding path program 3 times [2023-08-30 18:59:49,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:49,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728857353] [2023-08-30 18:59:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:49,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:49,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:49,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728857353] [2023-08-30 18:59:49,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728857353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:49,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:49,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:59:49,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166521039] [2023-08-30 18:59:49,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:49,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:59:49,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:49,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:59:49,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:59:50,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 18:59:50,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 173 transitions, 2668 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:50,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:50,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 18:59:50,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:50,847 INFO L130 PetriNetUnfolder]: 2661/4150 cut-off events. [2023-08-30 18:59:50,847 INFO L131 PetriNetUnfolder]: For 45163/45163 co-relation queries the response was YES. [2023-08-30 18:59:50,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24473 conditions, 4150 events. 2661/4150 cut-off events. For 45163/45163 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 22466 event pairs, 480 based on Foata normal form. 10/4060 useless extension candidates. Maximal degree in co-relation 24403. Up to 1724 conditions per place. [2023-08-30 18:59:50,872 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 251 selfloop transitions, 42 changer transitions 0/293 dead transitions. [2023-08-30 18:59:50,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 293 transitions, 4464 flow [2023-08-30 18:59:50,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:50,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2268 transitions. [2023-08-30 18:59:50,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42023346303501946 [2023-08-30 18:59:50,875 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2268 transitions. [2023-08-30 18:59:50,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2268 transitions. [2023-08-30 18:59:50,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:50,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2268 transitions. [2023-08-30 18:59:50,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.0) internal successors, (2268), 7 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:50,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:50,883 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:50,883 INFO L175 Difference]: Start difference. First operand has 136 places, 173 transitions, 2668 flow. Second operand 7 states and 2268 transitions. [2023-08-30 18:59:50,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 293 transitions, 4464 flow [2023-08-30 18:59:50,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 293 transitions, 4372 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-30 18:59:50,999 INFO L231 Difference]: Finished difference. Result has 139 places, 174 transitions, 2689 flow [2023-08-30 18:59:50,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2689, PETRI_PLACES=139, PETRI_TRANSITIONS=174} [2023-08-30 18:59:51,000 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2023-08-30 18:59:51,000 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 174 transitions, 2689 flow [2023-08-30 18:59:51,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:51,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:51,001 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] [2023-08-30 18:59:51,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 18:59:51,001 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)] === [2023-08-30 18:59:51,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1947204471, now seen corresponding path program 4 times [2023-08-30 18:59:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:51,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016289335] [2023-08-30 18:59:51,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:51,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:51,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:51,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016289335] [2023-08-30 18:59:51,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016289335] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:51,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:51,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:59:51,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503918533] [2023-08-30 18:59:51,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:51,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:59:51,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:51,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:59:51,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:59:51,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 18:59:51,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 174 transitions, 2689 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:51,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:51,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 18:59:51,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:52,397 INFO L130 PetriNetUnfolder]: 2661/4149 cut-off events. [2023-08-30 18:59:52,397 INFO L131 PetriNetUnfolder]: For 45314/45314 co-relation queries the response was YES. [2023-08-30 18:59:52,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24426 conditions, 4149 events. 2661/4149 cut-off events. For 45314/45314 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 22461 event pairs, 476 based on Foata normal form. 10/4063 useless extension candidates. Maximal degree in co-relation 24355. Up to 1724 conditions per place. [2023-08-30 18:59:52,425 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 249 selfloop transitions, 39 changer transitions 0/288 dead transitions. [2023-08-30 18:59:52,425 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 288 transitions, 4422 flow [2023-08-30 18:59:52,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:52,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-30 18:59:52,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-30 18:59:52,428 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-30 18:59:52,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-30 18:59:52,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:52,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-30 18:59:52,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:52,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:52,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:52,437 INFO L175 Difference]: Start difference. First operand has 139 places, 174 transitions, 2689 flow. Second operand 7 states and 2265 transitions. [2023-08-30 18:59:52,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 288 transitions, 4422 flow [2023-08-30 18:59:52,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 288 transitions, 4337 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-30 18:59:52,550 INFO L231 Difference]: Finished difference. Result has 142 places, 173 transitions, 2687 flow [2023-08-30 18:59:52,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2687, PETRI_PLACES=142, PETRI_TRANSITIONS=173} [2023-08-30 18:59:52,550 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2023-08-30 18:59:52,550 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 173 transitions, 2687 flow [2023-08-30 18:59:52,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:52,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:52,551 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] [2023-08-30 18:59:52,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 18:59:52,551 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)] === [2023-08-30 18:59:52,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:52,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1948393763, now seen corresponding path program 5 times [2023-08-30 18:59:52,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:52,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378200172] [2023-08-30 18:59:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:52,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:52,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:52,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:52,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378200172] [2023-08-30 18:59:52,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378200172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:52,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:52,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:59:52,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216053991] [2023-08-30 18:59:52,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:52,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:59:52,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:52,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:59:52,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:59:53,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 18:59:53,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 173 transitions, 2687 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:53,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:53,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 18:59:53,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:53,888 INFO L130 PetriNetUnfolder]: 2828/4578 cut-off events. [2023-08-30 18:59:53,888 INFO L131 PetriNetUnfolder]: For 48786/48786 co-relation queries the response was YES. [2023-08-30 18:59:53,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26522 conditions, 4578 events. 2828/4578 cut-off events. For 48786/48786 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 26803 event pairs, 442 based on Foata normal form. 4/4486 useless extension candidates. Maximal degree in co-relation 26450. Up to 1336 conditions per place. [2023-08-30 18:59:53,912 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 240 selfloop transitions, 59 changer transitions 1/300 dead transitions. [2023-08-30 18:59:53,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 300 transitions, 4672 flow [2023-08-30 18:59:53,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2234 transitions. [2023-08-30 18:59:53,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41393366685195476 [2023-08-30 18:59:53,914 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2234 transitions. [2023-08-30 18:59:53,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2234 transitions. [2023-08-30 18:59:53,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:53,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2234 transitions. [2023-08-30 18:59:53,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 319.14285714285717) internal successors, (2234), 7 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:53,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:53,920 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:53,920 INFO L175 Difference]: Start difference. First operand has 142 places, 173 transitions, 2687 flow. Second operand 7 states and 2234 transitions. [2023-08-30 18:59:53,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 300 transitions, 4672 flow [2023-08-30 18:59:54,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 300 transitions, 4523 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-08-30 18:59:54,052 INFO L231 Difference]: Finished difference. Result has 147 places, 187 transitions, 3009 flow [2023-08-30 18:59:54,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3009, PETRI_PLACES=147, PETRI_TRANSITIONS=187} [2023-08-30 18:59:54,053 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2023-08-30 18:59:54,053 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 187 transitions, 3009 flow [2023-08-30 18:59:54,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:54,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:54,054 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] [2023-08-30 18:59:54,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 18:59:54,054 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)] === [2023-08-30 18:59:54,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:54,054 INFO L85 PathProgramCache]: Analyzing trace with hash 858781202, now seen corresponding path program 5 times [2023-08-30 18:59:54,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:54,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275824665] [2023-08-30 18:59:54,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:54,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:54,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:54,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:54,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275824665] [2023-08-30 18:59:54,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275824665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:54,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:54,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:59:54,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966585094] [2023-08-30 18:59:54,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:54,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:59:54,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:54,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:59:54,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:59:54,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 18:59:54,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 187 transitions, 3009 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:54,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:54,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 18:59:54,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:55,497 INFO L130 PetriNetUnfolder]: 2809/4541 cut-off events. [2023-08-30 18:59:55,497 INFO L131 PetriNetUnfolder]: For 55597/55597 co-relation queries the response was YES. [2023-08-30 18:59:55,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26850 conditions, 4541 events. 2809/4541 cut-off events. For 55597/55597 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 26350 event pairs, 604 based on Foata normal form. 6/4455 useless extension candidates. Maximal degree in co-relation 26775. Up to 2441 conditions per place. [2023-08-30 18:59:55,523 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 240 selfloop transitions, 40 changer transitions 6/286 dead transitions. [2023-08-30 18:59:55,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 286 transitions, 4578 flow [2023-08-30 18:59:55,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2244 transitions. [2023-08-30 18:59:55,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578654808226795 [2023-08-30 18:59:55,526 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2244 transitions. [2023-08-30 18:59:55,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2244 transitions. [2023-08-30 18:59:55,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:55,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2244 transitions. [2023-08-30 18:59:55,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.57142857142856) internal successors, (2244), 7 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:55,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:55,532 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:55,533 INFO L175 Difference]: Start difference. First operand has 147 places, 187 transitions, 3009 flow. Second operand 7 states and 2244 transitions. [2023-08-30 18:59:55,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 286 transitions, 4578 flow [2023-08-30 18:59:55,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 286 transitions, 4443 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-08-30 18:59:55,687 INFO L231 Difference]: Finished difference. Result has 147 places, 185 transitions, 2934 flow [2023-08-30 18:59:55,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2934, PETRI_PLACES=147, PETRI_TRANSITIONS=185} [2023-08-30 18:59:55,688 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2023-08-30 18:59:55,688 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 185 transitions, 2934 flow [2023-08-30 18:59:55,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:55,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:55,689 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] [2023-08-30 18:59:55,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 18:59:55,689 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)] === [2023-08-30 18:59:55,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:55,689 INFO L85 PathProgramCache]: Analyzing trace with hash 454415150, now seen corresponding path program 6 times [2023-08-30 18:59:55,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:55,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470340337] [2023-08-30 18:59:55,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:55,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:56,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:56,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470340337] [2023-08-30 18:59:56,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470340337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:56,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:56,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:59:56,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024617014] [2023-08-30 18:59:56,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:56,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:59:56,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:56,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:59:56,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:59:56,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 18:59:56,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 185 transitions, 2934 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:56,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:56,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 18:59:56,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:57,283 INFO L130 PetriNetUnfolder]: 3872/6304 cut-off events. [2023-08-30 18:59:57,283 INFO L131 PetriNetUnfolder]: For 65432/65432 co-relation queries the response was YES. [2023-08-30 18:59:57,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35964 conditions, 6304 events. 3872/6304 cut-off events. For 65432/65432 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 39152 event pairs, 431 based on Foata normal form. 16/6228 useless extension candidates. Maximal degree in co-relation 35890. Up to 3505 conditions per place. [2023-08-30 18:59:57,323 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 297 selfloop transitions, 52 changer transitions 2/351 dead transitions. [2023-08-30 18:59:57,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 351 transitions, 5855 flow [2023-08-30 18:59:57,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2254 transitions. [2023-08-30 18:59:57,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176394293125811 [2023-08-30 18:59:57,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2254 transitions. [2023-08-30 18:59:57,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2254 transitions. [2023-08-30 18:59:57,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:57,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2254 transitions. [2023-08-30 18:59:57,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:57,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:57,331 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:57,331 INFO L175 Difference]: Start difference. First operand has 147 places, 185 transitions, 2934 flow. Second operand 7 states and 2254 transitions. [2023-08-30 18:59:57,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 351 transitions, 5855 flow [2023-08-30 18:59:57,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 351 transitions, 5697 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 18:59:57,644 INFO L231 Difference]: Finished difference. Result has 152 places, 214 transitions, 3601 flow [2023-08-30 18:59:57,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2850, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3601, PETRI_PLACES=152, PETRI_TRANSITIONS=214} [2023-08-30 18:59:57,644 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2023-08-30 18:59:57,644 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 214 transitions, 3601 flow [2023-08-30 18:59:57,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:57,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:59:57,645 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] [2023-08-30 18:59:57,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 18:59:57,645 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)] === [2023-08-30 18:59:57,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:59:57,645 INFO L85 PathProgramCache]: Analyzing trace with hash 898739619, now seen corresponding path program 6 times [2023-08-30 18:59:57,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:59:57,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705546066] [2023-08-30 18:59:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:59:57,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:59:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:59:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 18:59:58,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:59:58,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705546066] [2023-08-30 18:59:58,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705546066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:59:58,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:59:58,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 18:59:58,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037172775] [2023-08-30 18:59:58,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:59:58,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 18:59:58,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:59:58,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 18:59:58,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 18:59:58,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 771 [2023-08-30 18:59:58,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 214 transitions, 3601 flow. Second operand has 7 states, 7 states have (on average 308.14285714285717) internal successors, (2157), 7 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:58,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:59:58,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 771 [2023-08-30 18:59:58,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:59:59,604 INFO L130 PetriNetUnfolder]: 4122/6774 cut-off events. [2023-08-30 18:59:59,604 INFO L131 PetriNetUnfolder]: For 82006/82006 co-relation queries the response was YES. [2023-08-30 18:59:59,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40124 conditions, 6774 events. 4122/6774 cut-off events. For 82006/82006 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 43419 event pairs, 730 based on Foata normal form. 10/6692 useless extension candidates. Maximal degree in co-relation 40045. Up to 3909 conditions per place. [2023-08-30 18:59:59,651 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 268 selfloop transitions, 83 changer transitions 0/351 dead transitions. [2023-08-30 18:59:59,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 351 transitions, 5986 flow [2023-08-30 18:59:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 18:59:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 18:59:59,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2223 transitions. [2023-08-30 18:59:59,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118954974986103 [2023-08-30 18:59:59,654 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2223 transitions. [2023-08-30 18:59:59,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2223 transitions. [2023-08-30 18:59:59,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:59:59,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2223 transitions. [2023-08-30 18:59:59,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 317.57142857142856) internal successors, (2223), 7 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:59,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:59,661 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:59:59,661 INFO L175 Difference]: Start difference. First operand has 152 places, 214 transitions, 3601 flow. Second operand 7 states and 2223 transitions. [2023-08-30 18:59:59,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 351 transitions, 5986 flow [2023-08-30 19:00:00,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 351 transitions, 5934 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-30 19:00:00,011 INFO L231 Difference]: Finished difference. Result has 161 places, 242 transitions, 4411 flow [2023-08-30 19:00:00,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4411, PETRI_PLACES=161, PETRI_TRANSITIONS=242} [2023-08-30 19:00:00,011 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2023-08-30 19:00:00,011 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 242 transitions, 4411 flow [2023-08-30 19:00:00,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 308.14285714285717) internal successors, (2157), 7 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:00,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:00,012 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] [2023-08-30 19:00:00,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 19:00:00,012 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)] === [2023-08-30 19:00:00,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:00,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1280703030, now seen corresponding path program 7 times [2023-08-30 19:00:00,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:00,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048827155] [2023-08-30 19:00:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:00,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:00,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:00,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048827155] [2023-08-30 19:00:00,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048827155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:00,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:00,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:00,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735262320] [2023-08-30 19:00:00,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:00,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:00,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:00,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:00,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:00,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:00:00,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 242 transitions, 4411 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:00,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:00,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:00:00,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:01,931 INFO L130 PetriNetUnfolder]: 4524/7452 cut-off events. [2023-08-30 19:00:01,931 INFO L131 PetriNetUnfolder]: For 100360/100360 co-relation queries the response was YES. [2023-08-30 19:00:01,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45761 conditions, 7452 events. 4524/7452 cut-off events. For 100360/100360 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 48824 event pairs, 425 based on Foata normal form. 16/7372 useless extension candidates. Maximal degree in co-relation 45678. Up to 3171 conditions per place. [2023-08-30 19:00:01,991 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 348 selfloop transitions, 129 changer transitions 1/478 dead transitions. [2023-08-30 19:00:01,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 478 transitions, 8384 flow [2023-08-30 19:00:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 19:00:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 19:00:01,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2877 transitions. [2023-08-30 19:00:01,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41461305663640297 [2023-08-30 19:00:01,994 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2877 transitions. [2023-08-30 19:00:01,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2877 transitions. [2023-08-30 19:00:01,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:01,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2877 transitions. [2023-08-30 19:00:01,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 319.6666666666667) internal successors, (2877), 9 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:01,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:02,000 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:02,000 INFO L175 Difference]: Start difference. First operand has 161 places, 242 transitions, 4411 flow. Second operand 9 states and 2877 transitions. [2023-08-30 19:00:02,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 478 transitions, 8384 flow [2023-08-30 19:00:02,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 478 transitions, 8253 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 19:00:02,536 INFO L231 Difference]: Finished difference. Result has 174 places, 311 transitions, 5926 flow [2023-08-30 19:00:02,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5926, PETRI_PLACES=174, PETRI_TRANSITIONS=311} [2023-08-30 19:00:02,537 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2023-08-30 19:00:02,537 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 311 transitions, 5926 flow [2023-08-30 19:00:02,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:02,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:02,538 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] [2023-08-30 19:00:02,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 19:00:02,538 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)] === [2023-08-30 19:00:02,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:02,538 INFO L85 PathProgramCache]: Analyzing trace with hash -669426035, now seen corresponding path program 7 times [2023-08-30 19:00:02,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:02,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904248958] [2023-08-30 19:00:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:02,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:02,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:02,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904248958] [2023-08-30 19:00:02,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904248958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:02,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:02,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:02,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925340706] [2023-08-30 19:00:02,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:02,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:02,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:02,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:02,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:03,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:00:03,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 311 transitions, 5926 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:03,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:03,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:00:03,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:04,506 INFO L130 PetriNetUnfolder]: 4520/7448 cut-off events. [2023-08-30 19:00:04,506 INFO L131 PetriNetUnfolder]: For 114626/114626 co-relation queries the response was YES. [2023-08-30 19:00:04,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49413 conditions, 7448 events. 4520/7448 cut-off events. For 114626/114626 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 48656 event pairs, 842 based on Foata normal form. 4/7356 useless extension candidates. Maximal degree in co-relation 49324. Up to 4512 conditions per place. [2023-08-30 19:00:04,559 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 300 selfloop transitions, 100 changer transitions 5/405 dead transitions. [2023-08-30 19:00:04,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 405 transitions, 7731 flow [2023-08-30 19:00:04,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:04,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:04,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2241 transitions. [2023-08-30 19:00:04,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415230683713174 [2023-08-30 19:00:04,561 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2241 transitions. [2023-08-30 19:00:04,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2241 transitions. [2023-08-30 19:00:04,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:04,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2241 transitions. [2023-08-30 19:00:04,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.14285714285717) internal successors, (2241), 7 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:04,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:04,567 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:04,567 INFO L175 Difference]: Start difference. First operand has 174 places, 311 transitions, 5926 flow. Second operand 7 states and 2241 transitions. [2023-08-30 19:00:04,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 405 transitions, 7731 flow [2023-08-30 19:00:05,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 405 transitions, 7661 flow, removed 35 selfloop flow, removed 0 redundant places. [2023-08-30 19:00:05,140 INFO L231 Difference]: Finished difference. Result has 181 places, 312 transitions, 6097 flow [2023-08-30 19:00:05,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=5824, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6097, PETRI_PLACES=181, PETRI_TRANSITIONS=312} [2023-08-30 19:00:05,141 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2023-08-30 19:00:05,141 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 312 transitions, 6097 flow [2023-08-30 19:00:05,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:05,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:05,142 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] [2023-08-30 19:00:05,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 19:00:05,142 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)] === [2023-08-30 19:00:05,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:05,143 INFO L85 PathProgramCache]: Analyzing trace with hash 502177370, now seen corresponding path program 8 times [2023-08-30 19:00:05,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:05,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170031589] [2023-08-30 19:00:05,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:05,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:05,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:05,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170031589] [2023-08-30 19:00:05,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170031589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:05,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:05,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:05,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791282556] [2023-08-30 19:00:05,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:05,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:05,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:05,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:05,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:05,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 771 [2023-08-30 19:00:05,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 312 transitions, 6097 flow. Second operand has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:05,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:05,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 771 [2023-08-30 19:00:05,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:07,230 INFO L130 PetriNetUnfolder]: 4576/7658 cut-off events. [2023-08-30 19:00:07,231 INFO L131 PetriNetUnfolder]: For 121527/121527 co-relation queries the response was YES. [2023-08-30 19:00:07,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51369 conditions, 7658 events. 4576/7658 cut-off events. For 121527/121527 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 51388 event pairs, 756 based on Foata normal form. 16/7578 useless extension candidates. Maximal degree in co-relation 51278. Up to 3836 conditions per place. [2023-08-30 19:00:07,292 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 86 changer transitions 1/425 dead transitions. [2023-08-30 19:00:07,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 425 transitions, 8217 flow [2023-08-30 19:00:07,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:07,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2244 transitions. [2023-08-30 19:00:07,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578654808226795 [2023-08-30 19:00:07,294 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2244 transitions. [2023-08-30 19:00:07,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2244 transitions. [2023-08-30 19:00:07,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:07,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2244 transitions. [2023-08-30 19:00:07,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.57142857142856) internal successors, (2244), 7 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:07,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:07,300 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:07,300 INFO L175 Difference]: Start difference. First operand has 181 places, 312 transitions, 6097 flow. Second operand 7 states and 2244 transitions. [2023-08-30 19:00:07,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 425 transitions, 8217 flow [2023-08-30 19:00:08,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 425 transitions, 8053 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 19:00:08,039 INFO L231 Difference]: Finished difference. Result has 186 places, 317 transitions, 6275 flow [2023-08-30 19:00:08,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=5933, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6275, PETRI_PLACES=186, PETRI_TRANSITIONS=317} [2023-08-30 19:00:08,040 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2023-08-30 19:00:08,040 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 317 transitions, 6275 flow [2023-08-30 19:00:08,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:08,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:08,041 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] [2023-08-30 19:00:08,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 19:00:08,041 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)] === [2023-08-30 19:00:08,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:08,041 INFO L85 PathProgramCache]: Analyzing trace with hash 703973021, now seen corresponding path program 8 times [2023-08-30 19:00:08,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:08,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433079047] [2023-08-30 19:00:08,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:08,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:08,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:08,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433079047] [2023-08-30 19:00:08,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433079047] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:08,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:08,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:08,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444527204] [2023-08-30 19:00:08,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:08,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:08,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:08,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:08,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:08,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 771 [2023-08-30 19:00:08,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 317 transitions, 6275 flow. Second operand has 7 states, 7 states have (on average 308.14285714285717) internal successors, (2157), 7 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:08,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:08,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 771 [2023-08-30 19:00:08,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:10,205 INFO L130 PetriNetUnfolder]: 4628/7834 cut-off events. [2023-08-30 19:00:10,205 INFO L131 PetriNetUnfolder]: For 127980/127980 co-relation queries the response was YES. [2023-08-30 19:00:10,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52757 conditions, 7834 events. 4628/7834 cut-off events. For 127980/127980 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 53588 event pairs, 1040 based on Foata normal form. 4/7742 useless extension candidates. Maximal degree in co-relation 52663. Up to 4710 conditions per place. [2023-08-30 19:00:10,271 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 323 selfloop transitions, 121 changer transitions 4/448 dead transitions. [2023-08-30 19:00:10,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 448 transitions, 8796 flow [2023-08-30 19:00:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:10,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2216 transitions. [2023-08-30 19:00:10,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41059848063739113 [2023-08-30 19:00:10,273 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2216 transitions. [2023-08-30 19:00:10,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2216 transitions. [2023-08-30 19:00:10,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:10,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2216 transitions. [2023-08-30 19:00:10,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 316.57142857142856) internal successors, (2216), 7 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:10,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:10,280 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:10,280 INFO L175 Difference]: Start difference. First operand has 186 places, 317 transitions, 6275 flow. Second operand 7 states and 2216 transitions. [2023-08-30 19:00:10,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 448 transitions, 8796 flow [2023-08-30 19:00:11,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 448 transitions, 8578 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-08-30 19:00:11,238 INFO L231 Difference]: Finished difference. Result has 193 places, 337 transitions, 6759 flow [2023-08-30 19:00:11,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=6091, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6759, PETRI_PLACES=193, PETRI_TRANSITIONS=337} [2023-08-30 19:00:11,239 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2023-08-30 19:00:11,239 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 337 transitions, 6759 flow [2023-08-30 19:00:11,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 308.14285714285717) internal successors, (2157), 7 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:11,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:11,239 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] [2023-08-30 19:00:11,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 19:00:11,240 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)] === [2023-08-30 19:00:11,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:11,240 INFO L85 PathProgramCache]: Analyzing trace with hash -171246378, now seen corresponding path program 9 times [2023-08-30 19:00:11,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:11,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646734401] [2023-08-30 19:00:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:11,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:11,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:11,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646734401] [2023-08-30 19:00:11,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646734401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:11,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:11,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:11,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64888902] [2023-08-30 19:00:11,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:11,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:11,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:11,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:00:11,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 337 transitions, 6759 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:11,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:11,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:00:11,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:13,594 INFO L130 PetriNetUnfolder]: 4941/8391 cut-off events. [2023-08-30 19:00:13,595 INFO L131 PetriNetUnfolder]: For 140156/140156 co-relation queries the response was YES. [2023-08-30 19:00:13,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56837 conditions, 8391 events. 4941/8391 cut-off events. For 140156/140156 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 58371 event pairs, 982 based on Foata normal form. 8/8303 useless extension candidates. Maximal degree in co-relation 56739. Up to 2647 conditions per place. [2023-08-30 19:00:13,654 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 370 selfloop transitions, 115 changer transitions 0/485 dead transitions. [2023-08-30 19:00:13,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 485 transitions, 9743 flow [2023-08-30 19:00:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:13,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2267 transitions. [2023-08-30 19:00:13,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42004817491198815 [2023-08-30 19:00:13,658 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2267 transitions. [2023-08-30 19:00:13,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2267 transitions. [2023-08-30 19:00:13,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:13,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2267 transitions. [2023-08-30 19:00:13,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.85714285714283) internal successors, (2267), 7 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:13,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:13,663 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:13,663 INFO L175 Difference]: Start difference. First operand has 193 places, 337 transitions, 6759 flow. Second operand 7 states and 2267 transitions. [2023-08-30 19:00:13,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 485 transitions, 9743 flow [2023-08-30 19:00:14,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 485 transitions, 9661 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-08-30 19:00:14,469 INFO L231 Difference]: Finished difference. Result has 199 places, 350 transitions, 7310 flow [2023-08-30 19:00:14,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7310, PETRI_PLACES=199, PETRI_TRANSITIONS=350} [2023-08-30 19:00:14,469 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2023-08-30 19:00:14,470 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 350 transitions, 7310 flow [2023-08-30 19:00:14,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:14,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:14,470 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] [2023-08-30 19:00:14,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 19:00:14,470 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)] === [2023-08-30 19:00:14,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:14,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1404101974, now seen corresponding path program 10 times [2023-08-30 19:00:14,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:14,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522967885] [2023-08-30 19:00:14,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:14,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:14,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:14,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522967885] [2023-08-30 19:00:14,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522967885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:14,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:14,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 19:00:14,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306685376] [2023-08-30 19:00:14,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:14,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:00:14,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:14,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:00:14,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:00:14,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:00:14,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 350 transitions, 7310 flow. Second operand has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:14,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:14,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:00:14,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:16,712 INFO L130 PetriNetUnfolder]: 4910/8324 cut-off events. [2023-08-30 19:00:16,712 INFO L131 PetriNetUnfolder]: For 150792/150792 co-relation queries the response was YES. [2023-08-30 19:00:16,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57296 conditions, 8324 events. 4910/8324 cut-off events. For 150792/150792 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 57633 event pairs, 968 based on Foata normal form. 12/8240 useless extension candidates. Maximal degree in co-relation 57196. Up to 4569 conditions per place. [2023-08-30 19:00:16,781 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 122 changer transitions 0/460 dead transitions. [2023-08-30 19:00:16,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 460 transitions, 9542 flow [2023-08-30 19:00:16,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:16,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2248 transitions. [2023-08-30 19:00:16,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165277005743932 [2023-08-30 19:00:16,783 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2248 transitions. [2023-08-30 19:00:16,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2248 transitions. [2023-08-30 19:00:16,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:16,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2248 transitions. [2023-08-30 19:00:16,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.14285714285717) internal successors, (2248), 7 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:16,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:16,789 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:16,789 INFO L175 Difference]: Start difference. First operand has 199 places, 350 transitions, 7310 flow. Second operand 7 states and 2248 transitions. [2023-08-30 19:00:16,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 460 transitions, 9542 flow [2023-08-30 19:00:17,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 460 transitions, 9240 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-30 19:00:17,728 INFO L231 Difference]: Finished difference. Result has 202 places, 350 transitions, 7275 flow [2023-08-30 19:00:17,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7022, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7275, PETRI_PLACES=202, PETRI_TRANSITIONS=350} [2023-08-30 19:00:17,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2023-08-30 19:00:17,729 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 350 transitions, 7275 flow [2023-08-30 19:00:17,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:17,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:17,730 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] [2023-08-30 19:00:17,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 19:00:17,730 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)] === [2023-08-30 19:00:17,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:17,731 INFO L85 PathProgramCache]: Analyzing trace with hash 239437526, now seen corresponding path program 11 times [2023-08-30 19:00:17,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:17,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944312443] [2023-08-30 19:00:17,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:17,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:18,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:18,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944312443] [2023-08-30 19:00:18,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944312443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:18,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:18,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:18,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461848725] [2023-08-30 19:00:18,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:18,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:18,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:18,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:18,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:18,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:00:18,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 350 transitions, 7275 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:18,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:18,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:00:18,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:19,867 INFO L130 PetriNetUnfolder]: 4894/8294 cut-off events. [2023-08-30 19:00:19,867 INFO L131 PetriNetUnfolder]: For 146763/146763 co-relation queries the response was YES. [2023-08-30 19:00:19,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57092 conditions, 8294 events. 4894/8294 cut-off events. For 146763/146763 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 57422 event pairs, 968 based on Foata normal form. 6/8204 useless extension candidates. Maximal degree in co-relation 56991. Up to 4569 conditions per place. [2023-08-30 19:00:19,939 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 346 selfloop transitions, 103 changer transitions 6/455 dead transitions. [2023-08-30 19:00:19,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 455 transitions, 9438 flow [2023-08-30 19:00:19,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:19,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:19,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2242 transitions. [2023-08-30 19:00:19,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154159718362053 [2023-08-30 19:00:19,942 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2242 transitions. [2023-08-30 19:00:19,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2242 transitions. [2023-08-30 19:00:19,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:19,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2242 transitions. [2023-08-30 19:00:19,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.2857142857143) internal successors, (2242), 7 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:19,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:19,948 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:19,948 INFO L175 Difference]: Start difference. First operand has 202 places, 350 transitions, 7275 flow. Second operand 7 states and 2242 transitions. [2023-08-30 19:00:19,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 455 transitions, 9438 flow [2023-08-30 19:00:20,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 455 transitions, 9312 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 19:00:20,819 INFO L231 Difference]: Finished difference. Result has 206 places, 349 transitions, 7347 flow [2023-08-30 19:00:20,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7127, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7347, PETRI_PLACES=206, PETRI_TRANSITIONS=349} [2023-08-30 19:00:20,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-08-30 19:00:20,820 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 349 transitions, 7347 flow [2023-08-30 19:00:20,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:20,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:20,821 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] [2023-08-30 19:00:20,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 19:00:20,821 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)] === [2023-08-30 19:00:20,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:20,822 INFO L85 PathProgramCache]: Analyzing trace with hash -42669151, now seen corresponding path program 9 times [2023-08-30 19:00:20,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:20,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520692335] [2023-08-30 19:00:20,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:20,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:21,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:21,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520692335] [2023-08-30 19:00:21,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520692335] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:21,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:21,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:21,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47161801] [2023-08-30 19:00:21,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:21,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:21,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:21,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:21,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:21,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 771 [2023-08-30 19:00:21,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 349 transitions, 7347 flow. Second operand has 7 states, 7 states have (on average 306.14285714285717) internal successors, (2143), 7 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:21,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:21,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 771 [2023-08-30 19:00:21,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:23,056 INFO L130 PetriNetUnfolder]: 4881/8263 cut-off events. [2023-08-30 19:00:23,057 INFO L131 PetriNetUnfolder]: For 150786/150786 co-relation queries the response was YES. [2023-08-30 19:00:23,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57088 conditions, 8263 events. 4881/8263 cut-off events. For 150786/150786 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 56989 event pairs, 1152 based on Foata normal form. 4/8171 useless extension candidates. Maximal degree in co-relation 56986. Up to 5372 conditions per place. [2023-08-30 19:00:23,247 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 322 selfloop transitions, 115 changer transitions 4/441 dead transitions. [2023-08-30 19:00:23,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 441 transitions, 9271 flow [2023-08-30 19:00:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:23,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2200 transitions. [2023-08-30 19:00:23,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076338706688901 [2023-08-30 19:00:23,249 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2200 transitions. [2023-08-30 19:00:23,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2200 transitions. [2023-08-30 19:00:23,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:23,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2200 transitions. [2023-08-30 19:00:23,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.2857142857143) internal successors, (2200), 7 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:23,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:23,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:23,255 INFO L175 Difference]: Start difference. First operand has 206 places, 349 transitions, 7347 flow. Second operand 7 states and 2200 transitions. [2023-08-30 19:00:23,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 441 transitions, 9271 flow [2023-08-30 19:00:23,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 441 transitions, 9053 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-30 19:00:23,997 INFO L231 Difference]: Finished difference. Result has 206 places, 347 transitions, 7309 flow [2023-08-30 19:00:23,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7102, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7309, PETRI_PLACES=206, PETRI_TRANSITIONS=347} [2023-08-30 19:00:23,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-08-30 19:00:23,998 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 347 transitions, 7309 flow [2023-08-30 19:00:23,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 306.14285714285717) internal successors, (2143), 7 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:23,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:23,999 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] [2023-08-30 19:00:23,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 19:00:23,999 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)] === [2023-08-30 19:00:23,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:23,999 INFO L85 PathProgramCache]: Analyzing trace with hash 416811670, now seen corresponding path program 12 times [2023-08-30 19:00:24,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:24,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747451266] [2023-08-30 19:00:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:24,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:24,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:24,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747451266] [2023-08-30 19:00:24,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747451266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:24,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:24,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:24,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072153228] [2023-08-30 19:00:24,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:24,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:24,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:24,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:24,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:24,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:00:24,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 347 transitions, 7309 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:24,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:24,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:00:24,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:26,315 INFO L130 PetriNetUnfolder]: 4862/8226 cut-off events. [2023-08-30 19:00:26,315 INFO L131 PetriNetUnfolder]: For 155431/155431 co-relation queries the response was YES. [2023-08-30 19:00:26,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56919 conditions, 8226 events. 4862/8226 cut-off events. For 155431/155431 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 56586 event pairs, 1190 based on Foata normal form. 6/8136 useless extension candidates. Maximal degree in co-relation 56817. Up to 5371 conditions per place. [2023-08-30 19:00:26,388 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 302 selfloop transitions, 156 changer transitions 9/467 dead transitions. [2023-08-30 19:00:26,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 467 transitions, 9773 flow [2023-08-30 19:00:26,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:26,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2264 transitions. [2023-08-30 19:00:26,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194923105428942 [2023-08-30 19:00:26,391 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2264 transitions. [2023-08-30 19:00:26,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2264 transitions. [2023-08-30 19:00:26,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:26,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2264 transitions. [2023-08-30 19:00:26,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.42857142857144) internal successors, (2264), 7 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:26,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:26,397 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:26,397 INFO L175 Difference]: Start difference. First operand has 206 places, 347 transitions, 7309 flow. Second operand 7 states and 2264 transitions. [2023-08-30 19:00:26,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 467 transitions, 9773 flow [2023-08-30 19:00:27,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 467 transitions, 9524 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 19:00:27,247 INFO L231 Difference]: Finished difference. Result has 212 places, 378 transitions, 8062 flow [2023-08-30 19:00:27,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7116, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8062, PETRI_PLACES=212, PETRI_TRANSITIONS=378} [2023-08-30 19:00:27,248 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2023-08-30 19:00:27,248 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 378 transitions, 8062 flow [2023-08-30 19:00:27,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:27,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:27,249 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] [2023-08-30 19:00:27,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 19:00:27,249 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)] === [2023-08-30 19:00:27,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:27,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1323801734, now seen corresponding path program 13 times [2023-08-30 19:00:27,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:27,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177573152] [2023-08-30 19:00:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:27,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:27,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:27,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177573152] [2023-08-30 19:00:27,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177573152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:27,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:27,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:27,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633855209] [2023-08-30 19:00:27,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:27,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:27,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:27,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:27,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:27,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 771 [2023-08-30 19:00:27,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 378 transitions, 8062 flow. Second operand has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:27,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:27,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 771 [2023-08-30 19:00:27,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:29,689 INFO L130 PetriNetUnfolder]: 4992/8454 cut-off events. [2023-08-30 19:00:29,689 INFO L131 PetriNetUnfolder]: For 161899/161899 co-relation queries the response was YES. [2023-08-30 19:00:29,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59136 conditions, 8454 events. 4992/8454 cut-off events. For 161899/161899 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 58535 event pairs, 1252 based on Foata normal form. 4/8362 useless extension candidates. Maximal degree in co-relation 59030. Up to 5391 conditions per place. [2023-08-30 19:00:29,753 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 312 selfloop transitions, 168 changer transitions 0/480 dead transitions. [2023-08-30 19:00:29,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 480 transitions, 10297 flow [2023-08-30 19:00:29,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:29,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2264 transitions. [2023-08-30 19:00:29,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194923105428942 [2023-08-30 19:00:29,755 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2264 transitions. [2023-08-30 19:00:29,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2264 transitions. [2023-08-30 19:00:29,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:29,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2264 transitions. [2023-08-30 19:00:29,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.42857142857144) internal successors, (2264), 7 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:29,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:29,759 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:29,760 INFO L175 Difference]: Start difference. First operand has 212 places, 378 transitions, 8062 flow. Second operand 7 states and 2264 transitions. [2023-08-30 19:00:29,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 480 transitions, 10297 flow [2023-08-30 19:00:30,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 480 transitions, 10124 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-08-30 19:00:30,662 INFO L231 Difference]: Finished difference. Result has 216 places, 401 transitions, 8888 flow [2023-08-30 19:00:30,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7915, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8888, PETRI_PLACES=216, PETRI_TRANSITIONS=401} [2023-08-30 19:00:30,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2023-08-30 19:00:30,663 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 401 transitions, 8888 flow [2023-08-30 19:00:30,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:30,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:30,663 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] [2023-08-30 19:00:30,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 19:00:30,663 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)] === [2023-08-30 19:00:30,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:30,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1390050419, now seen corresponding path program 10 times [2023-08-30 19:00:30,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:30,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490460350] [2023-08-30 19:00:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:30,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490460350] [2023-08-30 19:00:30,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490460350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:30,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:30,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:30,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315177163] [2023-08-30 19:00:30,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:30,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:30,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:30,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:31,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:00:31,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 401 transitions, 8888 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:31,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:31,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:00:31,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:33,165 INFO L130 PetriNetUnfolder]: 5266/8922 cut-off events. [2023-08-30 19:00:33,165 INFO L131 PetriNetUnfolder]: For 174951/174951 co-relation queries the response was YES. [2023-08-30 19:00:33,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62264 conditions, 8922 events. 5266/8922 cut-off events. For 174951/174951 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 62359 event pairs, 1192 based on Foata normal form. 32/8858 useless extension candidates. Maximal degree in co-relation 62158. Up to 3078 conditions per place. [2023-08-30 19:00:33,234 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 357 selfloop transitions, 170 changer transitions 0/527 dead transitions. [2023-08-30 19:00:33,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 527 transitions, 11557 flow [2023-08-30 19:00:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:33,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2275 transitions. [2023-08-30 19:00:33,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42153047989623865 [2023-08-30 19:00:33,236 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2275 transitions. [2023-08-30 19:00:33,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2275 transitions. [2023-08-30 19:00:33,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:33,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2275 transitions. [2023-08-30 19:00:33,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:33,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:33,240 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:33,241 INFO L175 Difference]: Start difference. First operand has 216 places, 401 transitions, 8888 flow. Second operand 7 states and 2275 transitions. [2023-08-30 19:00:33,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 527 transitions, 11557 flow [2023-08-30 19:00:34,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 527 transitions, 11304 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-08-30 19:00:34,208 INFO L231 Difference]: Finished difference. Result has 222 places, 417 transitions, 9581 flow [2023-08-30 19:00:34,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=8635, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9581, PETRI_PLACES=222, PETRI_TRANSITIONS=417} [2023-08-30 19:00:34,209 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2023-08-30 19:00:34,209 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 417 transitions, 9581 flow [2023-08-30 19:00:34,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:34,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:34,209 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] [2023-08-30 19:00:34,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 19:00:34,210 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)] === [2023-08-30 19:00:34,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:34,210 INFO L85 PathProgramCache]: Analyzing trace with hash -946825859, now seen corresponding path program 11 times [2023-08-30 19:00:34,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:34,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808062193] [2023-08-30 19:00:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:34,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:34,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:34,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808062193] [2023-08-30 19:00:34,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808062193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:34,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:34,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:34,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823021380] [2023-08-30 19:00:34,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:34,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:34,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:34,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:34,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:34,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:00:34,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 417 transitions, 9581 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:34,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:34,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:00:34,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:36,785 INFO L130 PetriNetUnfolder]: 5624/9630 cut-off events. [2023-08-30 19:00:36,786 INFO L131 PetriNetUnfolder]: For 198065/198065 co-relation queries the response was YES. [2023-08-30 19:00:36,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67506 conditions, 9630 events. 5624/9630 cut-off events. For 198065/198065 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 69377 event pairs, 1112 based on Foata normal form. 8/9542 useless extension candidates. Maximal degree in co-relation 67398. Up to 3378 conditions per place. [2023-08-30 19:00:36,867 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 368 selfloop transitions, 222 changer transitions 0/590 dead transitions. [2023-08-30 19:00:36,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 590 transitions, 13343 flow [2023-08-30 19:00:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-30 19:00:36,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161571243283306 [2023-08-30 19:00:36,870 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-30 19:00:36,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-30 19:00:36,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:36,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-30 19:00:36,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:36,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:36,876 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:36,876 INFO L175 Difference]: Start difference. First operand has 222 places, 417 transitions, 9581 flow. Second operand 7 states and 2246 transitions. [2023-08-30 19:00:36,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 590 transitions, 13343 flow [2023-08-30 19:00:38,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 590 transitions, 12937 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-08-30 19:00:38,085 INFO L231 Difference]: Finished difference. Result has 229 places, 456 transitions, 10573 flow [2023-08-30 19:00:38,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=9223, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10573, PETRI_PLACES=229, PETRI_TRANSITIONS=456} [2023-08-30 19:00:38,086 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2023-08-30 19:00:38,086 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 456 transitions, 10573 flow [2023-08-30 19:00:38,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:38,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:38,087 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] [2023-08-30 19:00:38,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 19:00:38,087 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)] === [2023-08-30 19:00:38,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:38,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1445794718, now seen corresponding path program 14 times [2023-08-30 19:00:38,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:38,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73683506] [2023-08-30 19:00:38,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:38,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:38,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:38,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73683506] [2023-08-30 19:00:38,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73683506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:38,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:38,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:38,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565822697] [2023-08-30 19:00:38,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:38,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:38,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:38,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:38,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:38,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:00:38,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 456 transitions, 10573 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:38,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:38,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:00:38,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:41,041 INFO L130 PetriNetUnfolder]: 5618/9624 cut-off events. [2023-08-30 19:00:41,041 INFO L131 PetriNetUnfolder]: For 210069/210069 co-relation queries the response was YES. [2023-08-30 19:00:41,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69222 conditions, 9624 events. 5618/9624 cut-off events. For 210069/210069 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 69241 event pairs, 1416 based on Foata normal form. 6/9536 useless extension candidates. Maximal degree in co-relation 69110. Up to 6511 conditions per place. [2023-08-30 19:00:41,129 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 333 selfloop transitions, 193 changer transitions 8/534 dead transitions. [2023-08-30 19:00:41,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 534 transitions, 12280 flow [2023-08-30 19:00:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:41,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2268 transitions. [2023-08-30 19:00:41,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42023346303501946 [2023-08-30 19:00:41,131 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2268 transitions. [2023-08-30 19:00:41,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2268 transitions. [2023-08-30 19:00:41,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:41,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2268 transitions. [2023-08-30 19:00:41,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.0) internal successors, (2268), 7 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:41,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:41,135 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:41,135 INFO L175 Difference]: Start difference. First operand has 229 places, 456 transitions, 10573 flow. Second operand 7 states and 2268 transitions. [2023-08-30 19:00:41,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 534 transitions, 12280 flow [2023-08-30 19:00:42,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 534 transitions, 12155 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-08-30 19:00:42,492 INFO L231 Difference]: Finished difference. Result has 234 places, 454 transitions, 10750 flow [2023-08-30 19:00:42,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10410, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10750, PETRI_PLACES=234, PETRI_TRANSITIONS=454} [2023-08-30 19:00:42,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2023-08-30 19:00:42,493 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 454 transitions, 10750 flow [2023-08-30 19:00:42,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:42,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:42,494 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] [2023-08-30 19:00:42,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 19:00:42,494 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)] === [2023-08-30 19:00:42,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1382716463, now seen corresponding path program 12 times [2023-08-30 19:00:42,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:42,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450741018] [2023-08-30 19:00:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:42,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:42,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:42,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450741018] [2023-08-30 19:00:42,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450741018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:42,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:42,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:42,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622196628] [2023-08-30 19:00:42,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:42,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:42,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:42,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:42,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:43,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:00:43,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 454 transitions, 10750 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:43,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:43,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:00:43,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:45,201 INFO L130 PetriNetUnfolder]: 5571/9519 cut-off events. [2023-08-30 19:00:45,201 INFO L131 PetriNetUnfolder]: For 211877/211877 co-relation queries the response was YES. [2023-08-30 19:00:45,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68865 conditions, 9519 events. 5571/9519 cut-off events. For 211877/211877 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 68078 event pairs, 1298 based on Foata normal form. 26/9451 useless extension candidates. Maximal degree in co-relation 68753. Up to 3543 conditions per place. [2023-08-30 19:00:45,281 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 201 changer transitions 0/539 dead transitions. [2023-08-30 19:00:45,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 539 transitions, 12673 flow [2023-08-30 19:00:45,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:45,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2272 transitions. [2023-08-30 19:00:45,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209746155271447 [2023-08-30 19:00:45,284 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2272 transitions. [2023-08-30 19:00:45,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2272 transitions. [2023-08-30 19:00:45,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:45,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2272 transitions. [2023-08-30 19:00:45,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.57142857142856) internal successors, (2272), 7 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:45,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:45,288 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:45,288 INFO L175 Difference]: Start difference. First operand has 234 places, 454 transitions, 10750 flow. Second operand 7 states and 2272 transitions. [2023-08-30 19:00:45,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 539 transitions, 12673 flow [2023-08-30 19:00:46,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 539 transitions, 12299 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-30 19:00:46,600 INFO L231 Difference]: Finished difference. Result has 237 places, 455 transitions, 10833 flow [2023-08-30 19:00:46,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10352, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10833, PETRI_PLACES=237, PETRI_TRANSITIONS=455} [2023-08-30 19:00:46,601 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2023-08-30 19:00:46,602 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 455 transitions, 10833 flow [2023-08-30 19:00:46,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:46,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:46,602 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] [2023-08-30 19:00:46,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 19:00:46,603 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)] === [2023-08-30 19:00:46,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:46,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1675786311, now seen corresponding path program 13 times [2023-08-30 19:00:46,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:46,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037097047] [2023-08-30 19:00:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:46,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:46,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:46,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:46,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037097047] [2023-08-30 19:00:46,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037097047] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:46,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:46,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:46,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738376978] [2023-08-30 19:00:46,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:46,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:46,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:46,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:46,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:47,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:00:47,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 455 transitions, 10833 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:47,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:47,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:00:47,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:49,445 INFO L130 PetriNetUnfolder]: 5556/9500 cut-off events. [2023-08-30 19:00:49,445 INFO L131 PetriNetUnfolder]: For 211382/211382 co-relation queries the response was YES. [2023-08-30 19:00:49,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68811 conditions, 9500 events. 5556/9500 cut-off events. For 211382/211382 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 68017 event pairs, 1270 based on Foata normal form. 8/9414 useless extension candidates. Maximal degree in co-relation 68699. Up to 3543 conditions per place. [2023-08-30 19:00:49,522 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 399 selfloop transitions, 156 changer transitions 1/556 dead transitions. [2023-08-30 19:00:49,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 556 transitions, 13053 flow [2023-08-30 19:00:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:49,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2268 transitions. [2023-08-30 19:00:49,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42023346303501946 [2023-08-30 19:00:49,525 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2268 transitions. [2023-08-30 19:00:49,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2268 transitions. [2023-08-30 19:00:49,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:49,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2268 transitions. [2023-08-30 19:00:49,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.0) internal successors, (2268), 7 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:49,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:49,529 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:49,529 INFO L175 Difference]: Start difference. First operand has 237 places, 455 transitions, 10833 flow. Second operand 7 states and 2268 transitions. [2023-08-30 19:00:49,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 556 transitions, 13053 flow [2023-08-30 19:00:50,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 556 transitions, 12666 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-30 19:00:50,757 INFO L231 Difference]: Finished difference. Result has 241 places, 457 transitions, 10866 flow [2023-08-30 19:00:50,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10448, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10866, PETRI_PLACES=241, PETRI_TRANSITIONS=457} [2023-08-30 19:00:50,758 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2023-08-30 19:00:50,758 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 457 transitions, 10866 flow [2023-08-30 19:00:50,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:50,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:50,759 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] [2023-08-30 19:00:50,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 19:00:50,759 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)] === [2023-08-30 19:00:50,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:50,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1374750287, now seen corresponding path program 14 times [2023-08-30 19:00:50,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:50,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402313759] [2023-08-30 19:00:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:50,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:51,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:51,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402313759] [2023-08-30 19:00:51,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402313759] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 19:00:51,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062929718] [2023-08-30 19:00:51,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 19:00:51,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:00:51,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:00:51,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 19:00:51,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 19:00:51,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 19:00:51,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 19:00:51,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 19:00:51,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:00:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:51,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 19:00:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:51,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062929718] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 19:00:51,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 19:00:51,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-08-30 19:00:51,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897516764] [2023-08-30 19:00:51,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:51,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:51,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:51,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:51,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-08-30 19:00:51,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 771 [2023-08-30 19:00:51,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 457 transitions, 10866 flow. Second operand has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:51,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:51,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 771 [2023-08-30 19:00:51,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:54,316 INFO L130 PetriNetUnfolder]: 5574/9514 cut-off events. [2023-08-30 19:00:54,317 INFO L131 PetriNetUnfolder]: For 215303/215303 co-relation queries the response was YES. [2023-08-30 19:00:54,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68931 conditions, 9514 events. 5574/9514 cut-off events. For 215303/215303 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 67943 event pairs, 1318 based on Foata normal form. 10/9430 useless extension candidates. Maximal degree in co-relation 68817. Up to 3543 conditions per place. [2023-08-30 19:00:54,411 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 395 selfloop transitions, 164 changer transitions 0/559 dead transitions. [2023-08-30 19:00:54,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 559 transitions, 13191 flow [2023-08-30 19:00:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:00:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:00:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-30 19:00:54,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161571243283306 [2023-08-30 19:00:54,414 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-30 19:00:54,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-30 19:00:54,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:54,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-30 19:00:54,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:54,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:54,421 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:54,421 INFO L175 Difference]: Start difference. First operand has 241 places, 457 transitions, 10866 flow. Second operand 7 states and 2246 transitions. [2023-08-30 19:00:54,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 559 transitions, 13191 flow [2023-08-30 19:00:55,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 559 transitions, 12828 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-08-30 19:00:55,754 INFO L231 Difference]: Finished difference. Result has 242 places, 464 transitions, 11091 flow [2023-08-30 19:00:55,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10453, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11091, PETRI_PLACES=242, PETRI_TRANSITIONS=464} [2023-08-30 19:00:55,755 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2023-08-30 19:00:55,755 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 464 transitions, 11091 flow [2023-08-30 19:00:55,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:55,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:00:55,756 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] [2023-08-30 19:00:55,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 19:00:55,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-30 19:00:55,962 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)] === [2023-08-30 19:00:55,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:00:55,962 INFO L85 PathProgramCache]: Analyzing trace with hash -261624810, now seen corresponding path program 15 times [2023-08-30 19:00:55,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:00:55,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380831588] [2023-08-30 19:00:55,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:00:55,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:00:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:00:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:00:56,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:00:56,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380831588] [2023-08-30 19:00:56,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380831588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:00:56,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:00:56,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:00:56,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289239342] [2023-08-30 19:00:56,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:00:56,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:00:56,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:00:56,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:00:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:00:56,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:00:56,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 464 transitions, 11091 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:56,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:00:56,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:00:56,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:00:59,276 INFO L130 PetriNetUnfolder]: 5892/10536 cut-off events. [2023-08-30 19:00:59,276 INFO L131 PetriNetUnfolder]: For 221819/221819 co-relation queries the response was YES. [2023-08-30 19:00:59,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73713 conditions, 10536 events. 5892/10536 cut-off events. For 221819/221819 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 81982 event pairs, 767 based on Foata normal form. 8/10440 useless extension candidates. Maximal degree in co-relation 73599. Up to 5011 conditions per place. [2023-08-30 19:00:59,370 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 320 selfloop transitions, 285 changer transitions 0/605 dead transitions. [2023-08-30 19:00:59,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 605 transitions, 13865 flow [2023-08-30 19:00:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 19:00:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 19:00:59,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3196 transitions. [2023-08-30 19:00:59,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.414526588845655 [2023-08-30 19:00:59,373 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3196 transitions. [2023-08-30 19:00:59,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3196 transitions. [2023-08-30 19:00:59,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:00:59,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3196 transitions. [2023-08-30 19:00:59,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 319.6) internal successors, (3196), 10 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:59,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:59,379 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:00:59,379 INFO L175 Difference]: Start difference. First operand has 242 places, 464 transitions, 11091 flow. Second operand 10 states and 3196 transitions. [2023-08-30 19:00:59,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 605 transitions, 13865 flow [2023-08-30 19:01:00,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 605 transitions, 13525 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-30 19:01:00,988 INFO L231 Difference]: Finished difference. Result has 251 places, 493 transitions, 12066 flow [2023-08-30 19:01:00,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10790, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12066, PETRI_PLACES=251, PETRI_TRANSITIONS=493} [2023-08-30 19:01:00,989 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2023-08-30 19:01:00,989 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 493 transitions, 12066 flow [2023-08-30 19:01:00,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:00,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:00,990 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] [2023-08-30 19:01:00,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 19:01:00,990 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)] === [2023-08-30 19:01:00,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:00,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2058422772, now seen corresponding path program 16 times [2023-08-30 19:01:00,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:00,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499262489] [2023-08-30 19:01:00,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:00,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:01,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:01,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499262489] [2023-08-30 19:01:01,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499262489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:01,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:01,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:01:01,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290899318] [2023-08-30 19:01:01,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:01,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:01:01,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:01,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:01:01,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:01:01,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:01:01,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 493 transitions, 12066 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:01,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:01,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:01:01,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:04,074 INFO L130 PetriNetUnfolder]: 5876/10506 cut-off events. [2023-08-30 19:01:04,074 INFO L131 PetriNetUnfolder]: For 237561/237561 co-relation queries the response was YES. [2023-08-30 19:01:04,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77040 conditions, 10506 events. 5876/10506 cut-off events. For 237561/237561 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 81010 event pairs, 1653 based on Foata normal form. 6/10408 useless extension candidates. Maximal degree in co-relation 76922. Up to 7326 conditions per place. [2023-08-30 19:01:04,174 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 210 changer transitions 6/554 dead transitions. [2023-08-30 19:01:04,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 554 transitions, 13639 flow [2023-08-30 19:01:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:01:04,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:01:04,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2249 transitions. [2023-08-30 19:01:04,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4167129886974245 [2023-08-30 19:01:04,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2249 transitions. [2023-08-30 19:01:04,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2249 transitions. [2023-08-30 19:01:04,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:04,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2249 transitions. [2023-08-30 19:01:04,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.2857142857143) internal successors, (2249), 7 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:04,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:04,183 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:04,183 INFO L175 Difference]: Start difference. First operand has 251 places, 493 transitions, 12066 flow. Second operand 7 states and 2249 transitions. [2023-08-30 19:01:04,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 554 transitions, 13639 flow [2023-08-30 19:01:06,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 554 transitions, 13398 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-30 19:01:06,026 INFO L231 Difference]: Finished difference. Result has 254 places, 491 transitions, 12181 flow [2023-08-30 19:01:06,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11786, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12181, PETRI_PLACES=254, PETRI_TRANSITIONS=491} [2023-08-30 19:01:06,026 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2023-08-30 19:01:06,027 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 491 transitions, 12181 flow [2023-08-30 19:01:06,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:06,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:06,027 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] [2023-08-30 19:01:06,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 19:01:06,027 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)] === [2023-08-30 19:01:06,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:06,027 INFO L85 PathProgramCache]: Analyzing trace with hash 473239092, now seen corresponding path program 17 times [2023-08-30 19:01:06,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:06,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064246098] [2023-08-30 19:01:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:06,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:06,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:06,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:06,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064246098] [2023-08-30 19:01:06,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064246098] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:06,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:06,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:01:06,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145372205] [2023-08-30 19:01:06,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:06,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:01:06,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:06,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:01:06,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:01:06,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:01:06,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 491 transitions, 12181 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:06,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:06,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:01:06,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:08,984 INFO L130 PetriNetUnfolder]: 5881/10523 cut-off events. [2023-08-30 19:01:08,984 INFO L131 PetriNetUnfolder]: For 239781/239781 co-relation queries the response was YES. [2023-08-30 19:01:09,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77296 conditions, 10523 events. 5881/10523 cut-off events. For 239781/239781 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 81313 event pairs, 1567 based on Foata normal form. 12/10431 useless extension candidates. Maximal degree in co-relation 77177. Up to 7326 conditions per place. [2023-08-30 19:01:09,094 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 341 selfloop transitions, 215 changer transitions 1/557 dead transitions. [2023-08-30 19:01:09,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 557 transitions, 13914 flow [2023-08-30 19:01:09,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:01:09,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:01:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-30 19:01:09,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161571243283306 [2023-08-30 19:01:09,096 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-30 19:01:09,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-30 19:01:09,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:09,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-30 19:01:09,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:09,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:09,100 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:09,100 INFO L175 Difference]: Start difference. First operand has 254 places, 491 transitions, 12181 flow. Second operand 7 states and 2246 transitions. [2023-08-30 19:01:09,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 557 transitions, 13914 flow [2023-08-30 19:01:10,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 557 transitions, 13510 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 19:01:10,995 INFO L231 Difference]: Finished difference. Result has 258 places, 496 transitions, 12349 flow [2023-08-30 19:01:10,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11786, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12349, PETRI_PLACES=258, PETRI_TRANSITIONS=496} [2023-08-30 19:01:10,996 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2023-08-30 19:01:10,996 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 496 transitions, 12349 flow [2023-08-30 19:01:10,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:10,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:10,997 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] [2023-08-30 19:01:10,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 19:01:10,997 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)] === [2023-08-30 19:01:10,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:10,998 INFO L85 PathProgramCache]: Analyzing trace with hash 941711906, now seen corresponding path program 18 times [2023-08-30 19:01:10,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:10,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512271242] [2023-08-30 19:01:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:10,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:11,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:11,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:11,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512271242] [2023-08-30 19:01:11,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512271242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:11,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:11,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:01:11,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181870151] [2023-08-30 19:01:11,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:11,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:01:11,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:11,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:01:11,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:01:11,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:01:11,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 496 transitions, 12349 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:11,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:11,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:01:11,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:14,060 INFO L130 PetriNetUnfolder]: 5872/10494 cut-off events. [2023-08-30 19:01:14,061 INFO L131 PetriNetUnfolder]: For 244350/244350 co-relation queries the response was YES. [2023-08-30 19:01:14,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78039 conditions, 10494 events. 5872/10494 cut-off events. For 244350/244350 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 80902 event pairs, 1559 based on Foata normal form. 4/10394 useless extension candidates. Maximal degree in co-relation 77918. Up to 7326 conditions per place. [2023-08-30 19:01:14,165 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 333 selfloop transitions, 214 changer transitions 0/547 dead transitions. [2023-08-30 19:01:14,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 547 transitions, 13819 flow [2023-08-30 19:01:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:01:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:01:14,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2240 transitions. [2023-08-30 19:01:14,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150453955901427 [2023-08-30 19:01:14,167 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2240 transitions. [2023-08-30 19:01:14,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2240 transitions. [2023-08-30 19:01:14,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:14,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2240 transitions. [2023-08-30 19:01:14,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:14,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:14,172 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:14,172 INFO L175 Difference]: Start difference. First operand has 258 places, 496 transitions, 12349 flow. Second operand 7 states and 2240 transitions. [2023-08-30 19:01:14,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 547 transitions, 13819 flow [2023-08-30 19:01:16,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 547 transitions, 13411 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-30 19:01:16,214 INFO L231 Difference]: Finished difference. Result has 259 places, 494 transitions, 12308 flow [2023-08-30 19:01:16,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11880, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12308, PETRI_PLACES=259, PETRI_TRANSITIONS=494} [2023-08-30 19:01:16,215 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2023-08-30 19:01:16,215 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 494 transitions, 12308 flow [2023-08-30 19:01:16,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:16,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:16,215 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] [2023-08-30 19:01:16,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 19:01:16,216 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)] === [2023-08-30 19:01:16,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:16,216 INFO L85 PathProgramCache]: Analyzing trace with hash 421525821, now seen corresponding path program 15 times [2023-08-30 19:01:16,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:16,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48810713] [2023-08-30 19:01:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:16,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:16,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:16,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48810713] [2023-08-30 19:01:16,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48810713] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:16,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:16,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 19:01:16,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017197551] [2023-08-30 19:01:16,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:16,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:01:16,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:16,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:01:16,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:01:16,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:01:16,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 494 transitions, 12308 flow. Second operand has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 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) [2023-08-30 19:01:16,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:16,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:01:16,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:19,565 INFO L130 PetriNetUnfolder]: 6031/10821 cut-off events. [2023-08-30 19:01:19,566 INFO L131 PetriNetUnfolder]: For 243503/243503 co-relation queries the response was YES. [2023-08-30 19:01:19,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78996 conditions, 10821 events. 6031/10821 cut-off events. For 243503/243503 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 84913 event pairs, 799 based on Foata normal form. 4/10677 useless extension candidates. Maximal degree in co-relation 78876. Up to 5424 conditions per place. [2023-08-30 19:01:19,690 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 432 selfloop transitions, 254 changer transitions 1/687 dead transitions. [2023-08-30 19:01:19,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 687 transitions, 16986 flow [2023-08-30 19:01:19,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 19:01:19,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 19:01:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2558 transitions. [2023-08-30 19:01:19,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147211413748379 [2023-08-30 19:01:19,692 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2558 transitions. [2023-08-30 19:01:19,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2558 transitions. [2023-08-30 19:01:19,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:19,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2558 transitions. [2023-08-30 19:01:19,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 319.75) internal successors, (2558), 8 states have internal predecessors, (2558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:19,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:19,697 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:19,697 INFO L175 Difference]: Start difference. First operand has 259 places, 494 transitions, 12308 flow. Second operand 8 states and 2558 transitions. [2023-08-30 19:01:19,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 687 transitions, 16986 flow [2023-08-30 19:01:21,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 687 transitions, 16486 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 19:01:21,689 INFO L231 Difference]: Finished difference. Result has 267 places, 548 transitions, 14028 flow [2023-08-30 19:01:21,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11880, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14028, PETRI_PLACES=267, PETRI_TRANSITIONS=548} [2023-08-30 19:01:21,690 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2023-08-30 19:01:21,690 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 548 transitions, 14028 flow [2023-08-30 19:01:21,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 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) [2023-08-30 19:01:21,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:21,691 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] [2023-08-30 19:01:21,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-30 19:01:21,691 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)] === [2023-08-30 19:01:21,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:21,692 INFO L85 PathProgramCache]: Analyzing trace with hash -181201292, now seen corresponding path program 19 times [2023-08-30 19:01:21,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:21,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834535441] [2023-08-30 19:01:21,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:21,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:22,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:22,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834535441] [2023-08-30 19:01:22,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834535441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:22,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:22,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:01:22,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930473280] [2023-08-30 19:01:22,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:22,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:01:22,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:22,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:01:22,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:01:22,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:01:22,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 548 transitions, 14028 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:22,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:22,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:01:22,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:25,327 INFO L130 PetriNetUnfolder]: 6009/10785 cut-off events. [2023-08-30 19:01:25,328 INFO L131 PetriNetUnfolder]: For 263891/263891 co-relation queries the response was YES. [2023-08-30 19:01:25,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81350 conditions, 10785 events. 6009/10785 cut-off events. For 263891/263891 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 83986 event pairs, 1715 based on Foata normal form. 12/10797 useless extension candidates. Maximal degree in co-relation 81225. Up to 7297 conditions per place. [2023-08-30 19:01:25,421 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 365 selfloop transitions, 246 changer transitions 1/612 dead transitions. [2023-08-30 19:01:25,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 612 transitions, 15848 flow [2023-08-30 19:01:25,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:01:25,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:01:25,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-30 19:01:25,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-30 19:01:25,423 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-30 19:01:25,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-30 19:01:25,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:25,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-30 19:01:25,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:25,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:25,427 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:25,427 INFO L175 Difference]: Start difference. First operand has 267 places, 548 transitions, 14028 flow. Second operand 7 states and 2265 transitions. [2023-08-30 19:01:25,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 612 transitions, 15848 flow [2023-08-30 19:01:27,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 612 transitions, 15778 flow, removed 35 selfloop flow, removed 0 redundant places. [2023-08-30 19:01:27,185 INFO L231 Difference]: Finished difference. Result has 275 places, 550 transitions, 14538 flow [2023-08-30 19:01:27,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=13958, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14538, PETRI_PLACES=275, PETRI_TRANSITIONS=550} [2023-08-30 19:01:27,186 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2023-08-30 19:01:27,186 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 550 transitions, 14538 flow [2023-08-30 19:01:27,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:27,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:27,186 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] [2023-08-30 19:01:27,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-30 19:01:27,186 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)] === [2023-08-30 19:01:27,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:27,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1218142047, now seen corresponding path program 16 times [2023-08-30 19:01:27,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:27,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228555031] [2023-08-30 19:01:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:27,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:27,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:27,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228555031] [2023-08-30 19:01:27,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228555031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:27,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:27,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:01:27,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143995710] [2023-08-30 19:01:27,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:27,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:01:27,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:27,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:01:27,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:01:27,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:01:27,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 550 transitions, 14538 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:27,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:27,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:01:27,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:30,738 INFO L130 PetriNetUnfolder]: 6029/10775 cut-off events. [2023-08-30 19:01:30,738 INFO L131 PetriNetUnfolder]: For 272514/272514 co-relation queries the response was YES. [2023-08-30 19:01:30,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82405 conditions, 10775 events. 6029/10775 cut-off events. For 272514/272514 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 83443 event pairs, 1579 based on Foata normal form. 26/10801 useless extension candidates. Maximal degree in co-relation 82277. Up to 4114 conditions per place. [2023-08-30 19:01:30,838 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 395 selfloop transitions, 253 changer transitions 0/648 dead transitions. [2023-08-30 19:01:30,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 648 transitions, 17152 flow [2023-08-30 19:01:30,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:01:30,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:01:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2271 transitions. [2023-08-30 19:01:30,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207893274041134 [2023-08-30 19:01:30,840 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2271 transitions. [2023-08-30 19:01:30,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2271 transitions. [2023-08-30 19:01:30,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:30,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2271 transitions. [2023-08-30 19:01:30,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.42857142857144) internal successors, (2271), 7 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:30,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:30,844 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:30,844 INFO L175 Difference]: Start difference. First operand has 275 places, 550 transitions, 14538 flow. Second operand 7 states and 2271 transitions. [2023-08-30 19:01:30,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 648 transitions, 17152 flow [2023-08-30 19:01:32,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 648 transitions, 16771 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 19:01:32,833 INFO L231 Difference]: Finished difference. Result has 282 places, 570 transitions, 15285 flow [2023-08-30 19:01:32,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=14167, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15285, PETRI_PLACES=282, PETRI_TRANSITIONS=570} [2023-08-30 19:01:32,834 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2023-08-30 19:01:32,834 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 570 transitions, 15285 flow [2023-08-30 19:01:32,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:32,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:32,835 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] [2023-08-30 19:01:32,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-30 19:01:32,835 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)] === [2023-08-30 19:01:32,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:32,835 INFO L85 PathProgramCache]: Analyzing trace with hash -225720950, now seen corresponding path program 20 times [2023-08-30 19:01:32,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:32,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802575623] [2023-08-30 19:01:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:32,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:33,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:33,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802575623] [2023-08-30 19:01:33,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802575623] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:33,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:33,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:01:33,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883876455] [2023-08-30 19:01:33,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:33,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:01:33,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:33,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:01:33,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:01:33,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:01:33,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 570 transitions, 15285 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:33,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:33,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:01:33,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:36,267 INFO L130 PetriNetUnfolder]: 6035/10789 cut-off events. [2023-08-30 19:01:36,267 INFO L131 PetriNetUnfolder]: For 282152/282152 co-relation queries the response was YES. [2023-08-30 19:01:36,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83220 conditions, 10789 events. 6035/10789 cut-off events. For 282152/282152 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 83644 event pairs, 1701 based on Foata normal form. 16/10805 useless extension candidates. Maximal degree in co-relation 83089. Up to 7292 conditions per place. [2023-08-30 19:01:36,378 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 378 selfloop transitions, 256 changer transitions 0/634 dead transitions. [2023-08-30 19:01:36,379 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 634 transitions, 17163 flow [2023-08-30 19:01:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:01:36,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:01:36,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2267 transitions. [2023-08-30 19:01:36,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42004817491198815 [2023-08-30 19:01:36,381 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2267 transitions. [2023-08-30 19:01:36,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2267 transitions. [2023-08-30 19:01:36,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:36,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2267 transitions. [2023-08-30 19:01:36,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.85714285714283) internal successors, (2267), 7 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:36,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:36,386 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:36,387 INFO L175 Difference]: Start difference. First operand has 282 places, 570 transitions, 15285 flow. Second operand 7 states and 2267 transitions. [2023-08-30 19:01:36,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 634 transitions, 17163 flow [2023-08-30 19:01:38,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 634 transitions, 16638 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-30 19:01:38,640 INFO L231 Difference]: Finished difference. Result has 288 places, 579 transitions, 15575 flow [2023-08-30 19:01:38,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=14768, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15575, PETRI_PLACES=288, PETRI_TRANSITIONS=579} [2023-08-30 19:01:38,641 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2023-08-30 19:01:38,641 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 579 transitions, 15575 flow [2023-08-30 19:01:38,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:38,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:38,642 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] [2023-08-30 19:01:38,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-30 19:01:38,642 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)] === [2023-08-30 19:01:38,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash 747282927, now seen corresponding path program 17 times [2023-08-30 19:01:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:38,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105408773] [2023-08-30 19:01:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:38,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:38,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105408773] [2023-08-30 19:01:38,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105408773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:38,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:38,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:01:38,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393011176] [2023-08-30 19:01:38,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:38,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:01:38,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:38,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:01:38,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:01:39,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:01:39,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 579 transitions, 15575 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:39,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:39,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:01:39,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:42,112 INFO L130 PetriNetUnfolder]: 6037/10771 cut-off events. [2023-08-30 19:01:42,112 INFO L131 PetriNetUnfolder]: For 277139/277139 co-relation queries the response was YES. [2023-08-30 19:01:42,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83956 conditions, 10771 events. 6037/10771 cut-off events. For 277139/277139 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 83273 event pairs, 1555 based on Foata normal form. 6/10777 useless extension candidates. Maximal degree in co-relation 83822. Up to 4128 conditions per place. [2023-08-30 19:01:42,231 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 394 selfloop transitions, 260 changer transitions 0/654 dead transitions. [2023-08-30 19:01:42,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 654 transitions, 17630 flow [2023-08-30 19:01:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:01:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:01:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2271 transitions. [2023-08-30 19:01:42,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207893274041134 [2023-08-30 19:01:42,233 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2271 transitions. [2023-08-30 19:01:42,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2271 transitions. [2023-08-30 19:01:42,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:42,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2271 transitions. [2023-08-30 19:01:42,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.42857142857144) internal successors, (2271), 7 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:42,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:42,237 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:42,237 INFO L175 Difference]: Start difference. First operand has 288 places, 579 transitions, 15575 flow. Second operand 7 states and 2271 transitions. [2023-08-30 19:01:42,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 654 transitions, 17630 flow [2023-08-30 19:01:44,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 654 transitions, 17142 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-30 19:01:44,742 INFO L231 Difference]: Finished difference. Result has 291 places, 583 transitions, 15811 flow [2023-08-30 19:01:44,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15049, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15811, PETRI_PLACES=291, PETRI_TRANSITIONS=583} [2023-08-30 19:01:44,743 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2023-08-30 19:01:44,743 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 583 transitions, 15811 flow [2023-08-30 19:01:44,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:44,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:44,744 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] [2023-08-30 19:01:44,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-30 19:01:44,744 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)] === [2023-08-30 19:01:44,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:44,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1792142250, now seen corresponding path program 21 times [2023-08-30 19:01:44,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:44,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65080619] [2023-08-30 19:01:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:44,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:45,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:45,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:45,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65080619] [2023-08-30 19:01:45,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65080619] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:45,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:45,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:01:45,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249786389] [2023-08-30 19:01:45,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:45,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:01:45,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:45,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:01:45,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:01:45,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:01:45,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 583 transitions, 15811 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:45,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:45,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:01:45,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:48,343 INFO L130 PetriNetUnfolder]: 6005/10711 cut-off events. [2023-08-30 19:01:48,344 INFO L131 PetriNetUnfolder]: For 278983/278983 co-relation queries the response was YES. [2023-08-30 19:01:48,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83062 conditions, 10711 events. 6005/10711 cut-off events. For 278983/278983 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 82675 event pairs, 1701 based on Foata normal form. 12/10723 useless extension candidates. Maximal degree in co-relation 82928. Up to 7266 conditions per place. [2023-08-30 19:01:48,437 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 380 selfloop transitions, 256 changer transitions 1/637 dead transitions. [2023-08-30 19:01:48,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 637 transitions, 17425 flow [2023-08-30 19:01:48,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:01:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:01:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-30 19:01:48,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-30 19:01:48,439 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-30 19:01:48,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-30 19:01:48,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:48,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-30 19:01:48,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:48,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:48,443 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:48,443 INFO L175 Difference]: Start difference. First operand has 291 places, 583 transitions, 15811 flow. Second operand 7 states and 2265 transitions. [2023-08-30 19:01:48,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 637 transitions, 17425 flow [2023-08-30 19:01:50,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 637 transitions, 17131 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-30 19:01:50,252 INFO L231 Difference]: Finished difference. Result has 296 places, 581 transitions, 15968 flow [2023-08-30 19:01:50,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15484, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15968, PETRI_PLACES=296, PETRI_TRANSITIONS=581} [2023-08-30 19:01:50,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2023-08-30 19:01:50,253 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 581 transitions, 15968 flow [2023-08-30 19:01:50,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:50,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:50,254 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] [2023-08-30 19:01:50,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-30 19:01:50,254 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)] === [2023-08-30 19:01:50,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:50,255 INFO L85 PathProgramCache]: Analyzing trace with hash 444735361, now seen corresponding path program 18 times [2023-08-30 19:01:50,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:50,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592371505] [2023-08-30 19:01:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:50,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:50,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:50,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592371505] [2023-08-30 19:01:50,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592371505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:50,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:50,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:01:50,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592065392] [2023-08-30 19:01:50,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:50,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:01:50,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:50,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:01:50,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:01:50,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:01:50,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 581 transitions, 15968 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:50,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:50,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:01:50,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:53,831 INFO L130 PetriNetUnfolder]: 5981/10649 cut-off events. [2023-08-30 19:01:53,832 INFO L131 PetriNetUnfolder]: For 277146/277146 co-relation queries the response was YES. [2023-08-30 19:01:53,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82958 conditions, 10649 events. 5981/10649 cut-off events. For 277146/277146 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 81942 event pairs, 1535 based on Foata normal form. 10/10659 useless extension candidates. Maximal degree in co-relation 82823. Up to 4068 conditions per place. [2023-08-30 19:01:53,955 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 391 selfloop transitions, 256 changer transitions 0/647 dead transitions. [2023-08-30 19:01:53,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 647 transitions, 17860 flow [2023-08-30 19:01:53,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:01:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:01:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2267 transitions. [2023-08-30 19:01:53,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42004817491198815 [2023-08-30 19:01:53,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2267 transitions. [2023-08-30 19:01:53,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2267 transitions. [2023-08-30 19:01:53,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:53,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2267 transitions. [2023-08-30 19:01:53,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.85714285714283) internal successors, (2267), 7 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:53,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:53,962 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:53,962 INFO L175 Difference]: Start difference. First operand has 296 places, 581 transitions, 15968 flow. Second operand 7 states and 2267 transitions. [2023-08-30 19:01:53,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 647 transitions, 17860 flow [2023-08-30 19:01:56,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 647 transitions, 17343 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 19:01:56,099 INFO L231 Difference]: Finished difference. Result has 296 places, 584 transitions, 16063 flow [2023-08-30 19:01:56,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15367, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16063, PETRI_PLACES=296, PETRI_TRANSITIONS=584} [2023-08-30 19:01:56,099 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2023-08-30 19:01:56,099 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 584 transitions, 16063 flow [2023-08-30 19:01:56,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:56,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:01:56,100 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] [2023-08-30 19:01:56,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-30 19:01:56,100 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)] === [2023-08-30 19:01:56,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:01:56,100 INFO L85 PathProgramCache]: Analyzing trace with hash 301631524, now seen corresponding path program 22 times [2023-08-30 19:01:56,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:01:56,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840980837] [2023-08-30 19:01:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:01:56,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:01:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:01:56,362 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:01:56,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:01:56,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840980837] [2023-08-30 19:01:56,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840980837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:01:56,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:01:56,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:01:56,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905751201] [2023-08-30 19:01:56,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:01:56,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:01:56,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:01:56,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:01:56,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:01:56,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:01:56,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 584 transitions, 16063 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:56,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:01:56,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:01:56,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:01:59,841 INFO L130 PetriNetUnfolder]: 6115/10945 cut-off events. [2023-08-30 19:01:59,841 INFO L131 PetriNetUnfolder]: For 283656/283656 co-relation queries the response was YES. [2023-08-30 19:01:59,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84292 conditions, 10945 events. 6115/10945 cut-off events. For 283656/283656 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 85851 event pairs, 885 based on Foata normal form. 8/10953 useless extension candidates. Maximal degree in co-relation 84159. Up to 5029 conditions per place. [2023-08-30 19:01:59,971 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 349 selfloop transitions, 340 changer transitions 0/689 dead transitions. [2023-08-30 19:01:59,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 689 transitions, 18560 flow [2023-08-30 19:01:59,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 19:01:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 19:01:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2878 transitions. [2023-08-30 19:01:59,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41475716962098286 [2023-08-30 19:01:59,974 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2878 transitions. [2023-08-30 19:01:59,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2878 transitions. [2023-08-30 19:01:59,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:01:59,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2878 transitions. [2023-08-30 19:01:59,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 319.77777777777777) internal successors, (2878), 9 states have internal predecessors, (2878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:59,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:59,981 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:01:59,981 INFO L175 Difference]: Start difference. First operand has 296 places, 584 transitions, 16063 flow. Second operand 9 states and 2878 transitions. [2023-08-30 19:01:59,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 689 transitions, 18560 flow [2023-08-30 19:02:02,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 689 transitions, 18107 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-08-30 19:02:02,401 INFO L231 Difference]: Finished difference. Result has 299 places, 597 transitions, 16611 flow [2023-08-30 19:02:02,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15581, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16611, PETRI_PLACES=299, PETRI_TRANSITIONS=597} [2023-08-30 19:02:02,401 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2023-08-30 19:02:02,402 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 597 transitions, 16611 flow [2023-08-30 19:02:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:02,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:02:02,402 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] [2023-08-30 19:02:02,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-30 19:02:02,402 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)] === [2023-08-30 19:02:02,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:02:02,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1860640349, now seen corresponding path program 19 times [2023-08-30 19:02:02,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:02:02,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078309976] [2023-08-30 19:02:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:02:02,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:02:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:02:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:02:02,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:02:02,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078309976] [2023-08-30 19:02:02,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078309976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:02:02,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:02:02,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:02:02,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052517695] [2023-08-30 19:02:02,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:02:02,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:02:02,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:02:02,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:02:02,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:02:02,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:02:02,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 597 transitions, 16611 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:02,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:02:02,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:02:02,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:02:05,865 INFO L130 PetriNetUnfolder]: 6105/10923 cut-off events. [2023-08-30 19:02:05,865 INFO L131 PetriNetUnfolder]: For 289853/289853 co-relation queries the response was YES. [2023-08-30 19:02:05,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86457 conditions, 10923 events. 6105/10923 cut-off events. For 289853/289853 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 84918 event pairs, 1619 based on Foata normal form. 4/10927 useless extension candidates. Maximal degree in co-relation 86324. Up to 4042 conditions per place. [2023-08-30 19:02:05,988 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 398 selfloop transitions, 255 changer transitions 4/657 dead transitions. [2023-08-30 19:02:05,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 657 transitions, 18416 flow [2023-08-30 19:02:05,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:02:05,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:02:05,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2262 transitions. [2023-08-30 19:02:05,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4191217342968316 [2023-08-30 19:02:05,991 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2262 transitions. [2023-08-30 19:02:05,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2262 transitions. [2023-08-30 19:02:05,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:02:05,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2262 transitions. [2023-08-30 19:02:05,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.14285714285717) internal successors, (2262), 7 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:05,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:05,997 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:05,997 INFO L175 Difference]: Start difference. First operand has 299 places, 597 transitions, 16611 flow. Second operand 7 states and 2262 transitions. [2023-08-30 19:02:05,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 657 transitions, 18416 flow [2023-08-30 19:02:08,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 657 transitions, 17823 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 19:02:08,330 INFO L231 Difference]: Finished difference. Result has 302 places, 596 transitions, 16516 flow [2023-08-30 19:02:08,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=16032, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16516, PETRI_PLACES=302, PETRI_TRANSITIONS=596} [2023-08-30 19:02:08,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2023-08-30 19:02:08,330 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 596 transitions, 16516 flow [2023-08-30 19:02:08,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:08,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:02:08,331 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] [2023-08-30 19:02:08,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-30 19:02:08,331 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)] === [2023-08-30 19:02:08,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:02:08,332 INFO L85 PathProgramCache]: Analyzing trace with hash -769401119, now seen corresponding path program 20 times [2023-08-30 19:02:08,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:02:08,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986966342] [2023-08-30 19:02:08,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:02:08,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:02:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:02:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:02:08,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:02:08,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986966342] [2023-08-30 19:02:08,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986966342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:02:08,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:02:08,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:02:08,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728591248] [2023-08-30 19:02:08,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:02:08,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:02:08,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:02:08,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:02:08,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:02:08,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:02:08,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 596 transitions, 16516 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:08,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:02:08,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:02:08,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:02:11,814 INFO L130 PetriNetUnfolder]: 6132/10986 cut-off events. [2023-08-30 19:02:11,815 INFO L131 PetriNetUnfolder]: For 289119/289119 co-relation queries the response was YES. [2023-08-30 19:02:11,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85937 conditions, 10986 events. 6132/10986 cut-off events. For 289119/289119 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 85949 event pairs, 1341 based on Foata normal form. 4/10990 useless extension candidates. Maximal degree in co-relation 85819. Up to 6043 conditions per place. [2023-08-30 19:02:11,938 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 415 selfloop transitions, 299 changer transitions 1/715 dead transitions. [2023-08-30 19:02:11,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 715 transitions, 19765 flow [2023-08-30 19:02:11,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:02:11,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:02:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2240 transitions. [2023-08-30 19:02:11,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150453955901427 [2023-08-30 19:02:11,941 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2240 transitions. [2023-08-30 19:02:11,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2240 transitions. [2023-08-30 19:02:11,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:02:11,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2240 transitions. [2023-08-30 19:02:11,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:11,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:11,945 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:11,945 INFO L175 Difference]: Start difference. First operand has 302 places, 596 transitions, 16516 flow. Second operand 7 states and 2240 transitions. [2023-08-30 19:02:11,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 715 transitions, 19765 flow [2023-08-30 19:02:14,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 715 transitions, 19338 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 19:02:14,312 INFO L231 Difference]: Finished difference. Result has 307 places, 616 transitions, 17596 flow [2023-08-30 19:02:14,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=16035, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17596, PETRI_PLACES=307, PETRI_TRANSITIONS=616} [2023-08-30 19:02:14,312 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2023-08-30 19:02:14,313 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 616 transitions, 17596 flow [2023-08-30 19:02:14,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:14,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:02:14,313 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] [2023-08-30 19:02:14,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-30 19:02:14,313 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)] === [2023-08-30 19:02:14,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:02:14,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1662687720, now seen corresponding path program 23 times [2023-08-30 19:02:14,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:02:14,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169170108] [2023-08-30 19:02:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:02:14,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:02:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:02:14,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:02:14,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:02:14,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169170108] [2023-08-30 19:02:14,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169170108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:02:14,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:02:14,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:02:14,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780970576] [2023-08-30 19:02:14,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:02:14,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:02:14,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:02:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:02:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:02:14,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:02:14,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 616 transitions, 17596 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:14,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:02:14,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:02:14,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:02:17,858 INFO L130 PetriNetUnfolder]: 6127/10967 cut-off events. [2023-08-30 19:02:17,858 INFO L131 PetriNetUnfolder]: For 316683/316683 co-relation queries the response was YES. [2023-08-30 19:02:17,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87311 conditions, 10967 events. 6127/10967 cut-off events. For 316683/316683 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 85405 event pairs, 1751 based on Foata normal form. 4/10971 useless extension candidates. Maximal degree in co-relation 87190. Up to 7251 conditions per place. [2023-08-30 19:02:17,980 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 398 selfloop transitions, 261 changer transitions 0/659 dead transitions. [2023-08-30 19:02:17,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 659 transitions, 19245 flow [2023-08-30 19:02:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:02:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:02:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2254 transitions. [2023-08-30 19:02:17,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176394293125811 [2023-08-30 19:02:17,982 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2254 transitions. [2023-08-30 19:02:17,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2254 transitions. [2023-08-30 19:02:17,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:02:17,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2254 transitions. [2023-08-30 19:02:17,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:17,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:17,986 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:17,986 INFO L175 Difference]: Start difference. First operand has 307 places, 616 transitions, 17596 flow. Second operand 7 states and 2254 transitions. [2023-08-30 19:02:17,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 659 transitions, 19245 flow [2023-08-30 19:02:20,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 659 transitions, 18919 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-30 19:02:20,393 INFO L231 Difference]: Finished difference. Result has 309 places, 617 transitions, 17798 flow [2023-08-30 19:02:20,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=17195, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17798, PETRI_PLACES=309, PETRI_TRANSITIONS=617} [2023-08-30 19:02:20,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2023-08-30 19:02:20,394 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 617 transitions, 17798 flow [2023-08-30 19:02:20,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:20,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:02:20,394 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] [2023-08-30 19:02:20,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-30 19:02:20,394 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)] === [2023-08-30 19:02:20,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:02:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1151670496, now seen corresponding path program 24 times [2023-08-30 19:02:20,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:02:20,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727228638] [2023-08-30 19:02:20,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:02:20,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:02:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:02:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:02:20,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:02:20,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727228638] [2023-08-30 19:02:20,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727228638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:02:20,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:02:20,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:02:20,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781144175] [2023-08-30 19:02:20,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:02:20,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:02:20,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:02:20,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:02:20,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:02:20,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:02:20,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 617 transitions, 17798 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:20,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:02:20,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:02:20,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:02:24,251 INFO L130 PetriNetUnfolder]: 6277/11245 cut-off events. [2023-08-30 19:02:24,251 INFO L131 PetriNetUnfolder]: For 316533/316533 co-relation queries the response was YES. [2023-08-30 19:02:24,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90213 conditions, 11245 events. 6277/11245 cut-off events. For 316533/316533 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 88652 event pairs, 707 based on Foata normal form. 8/11253 useless extension candidates. Maximal degree in co-relation 90093. Up to 3786 conditions per place. [2023-08-30 19:02:24,407 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 412 selfloop transitions, 361 changer transitions 0/773 dead transitions. [2023-08-30 19:02:24,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 773 transitions, 21756 flow [2023-08-30 19:02:24,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 19:02:24,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 19:02:24,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2881 transitions. [2023-08-30 19:02:24,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4151895085747226 [2023-08-30 19:02:24,409 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2881 transitions. [2023-08-30 19:02:24,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2881 transitions. [2023-08-30 19:02:24,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:02:24,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2881 transitions. [2023-08-30 19:02:24,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 320.1111111111111) internal successors, (2881), 9 states have internal predecessors, (2881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:24,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:24,414 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:24,414 INFO L175 Difference]: Start difference. First operand has 309 places, 617 transitions, 17798 flow. Second operand 9 states and 2881 transitions. [2023-08-30 19:02:24,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 773 transitions, 21756 flow [2023-08-30 19:02:27,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 773 transitions, 21047 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-08-30 19:02:27,092 INFO L231 Difference]: Finished difference. Result has 316 places, 644 transitions, 19098 flow [2023-08-30 19:02:27,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=17139, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19098, PETRI_PLACES=316, PETRI_TRANSITIONS=644} [2023-08-30 19:02:27,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2023-08-30 19:02:27,093 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 644 transitions, 19098 flow [2023-08-30 19:02:27,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:27,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:02:27,094 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] [2023-08-30 19:02:27,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-30 19:02:27,094 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)] === [2023-08-30 19:02:27,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:02:27,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1672906338, now seen corresponding path program 25 times [2023-08-30 19:02:27,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:02:27,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083235957] [2023-08-30 19:02:27,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:02:27,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:02:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:02:27,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:02:27,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:02:27,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083235957] [2023-08-30 19:02:27,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083235957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:02:27,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:02:27,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:02:27,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076351848] [2023-08-30 19:02:27,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:02:27,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:02:27,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:02:27,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:02:27,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:02:27,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:02:27,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 644 transitions, 19098 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:27,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:02:27,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:02:27,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:02:31,186 INFO L130 PetriNetUnfolder]: 6689/12023 cut-off events. [2023-08-30 19:02:31,186 INFO L131 PetriNetUnfolder]: For 360624/360624 co-relation queries the response was YES. [2023-08-30 19:02:31,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99466 conditions, 12023 events. 6689/12023 cut-off events. For 360624/360624 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 95742 event pairs, 1381 based on Foata normal form. 8/12031 useless extension candidates. Maximal degree in co-relation 99341. Up to 3366 conditions per place. [2023-08-30 19:02:31,298 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 507 selfloop transitions, 282 changer transitions 0/789 dead transitions. [2023-08-30 19:02:31,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 789 transitions, 23280 flow [2023-08-30 19:02:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:02:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:02:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-30 19:02:31,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-30 19:02:31,300 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-30 19:02:31,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-30 19:02:31,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:02:31,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-30 19:02:31,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:31,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:31,305 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:31,305 INFO L175 Difference]: Start difference. First operand has 316 places, 644 transitions, 19098 flow. Second operand 7 states and 2265 transitions. [2023-08-30 19:02:31,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 789 transitions, 23280 flow [2023-08-30 19:02:33,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 789 transitions, 22724 flow, removed 37 selfloop flow, removed 5 redundant places. [2023-08-30 19:02:34,007 INFO L231 Difference]: Finished difference. Result has 320 places, 660 transitions, 19806 flow [2023-08-30 19:02:34,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=18578, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19806, PETRI_PLACES=320, PETRI_TRANSITIONS=660} [2023-08-30 19:02:34,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2023-08-30 19:02:34,008 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 660 transitions, 19806 flow [2023-08-30 19:02:34,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:34,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:02:34,009 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] [2023-08-30 19:02:34,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-30 19:02:34,009 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:02:34,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:02:34,009 INFO L85 PathProgramCache]: Analyzing trace with hash -547474396, now seen corresponding path program 26 times [2023-08-30 19:02:34,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:02:34,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889307250] [2023-08-30 19:02:34,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:02:34,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:02:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:02:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:02:34,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:02:34,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889307250] [2023-08-30 19:02:34,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889307250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:02:34,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:02:34,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:02:34,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569176400] [2023-08-30 19:02:34,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:02:34,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:02:34,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:02:34,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:02:34,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:02:34,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:02:34,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 660 transitions, 19806 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:34,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:02:34,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:02:34,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:02:38,225 INFO L130 PetriNetUnfolder]: 6650/11934 cut-off events. [2023-08-30 19:02:38,225 INFO L131 PetriNetUnfolder]: For 368474/368474 co-relation queries the response was YES. [2023-08-30 19:02:38,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98759 conditions, 11934 events. 6650/11934 cut-off events. For 368474/368474 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 94669 event pairs, 1577 based on Foata normal form. 10/11944 useless extension candidates. Maximal degree in co-relation 98633. Up to 3857 conditions per place. [2023-08-30 19:02:38,371 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 434 selfloop transitions, 339 changer transitions 0/773 dead transitions. [2023-08-30 19:02:38,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 773 transitions, 23156 flow [2023-08-30 19:02:38,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:02:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:02:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2268 transitions. [2023-08-30 19:02:38,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42023346303501946 [2023-08-30 19:02:38,373 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2268 transitions. [2023-08-30 19:02:38,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2268 transitions. [2023-08-30 19:02:38,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:02:38,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2268 transitions. [2023-08-30 19:02:38,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.0) internal successors, (2268), 7 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:38,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:38,377 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:38,377 INFO L175 Difference]: Start difference. First operand has 320 places, 660 transitions, 19806 flow. Second operand 7 states and 2268 transitions. [2023-08-30 19:02:38,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 773 transitions, 23156 flow [2023-08-30 19:02:41,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 773 transitions, 22785 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-30 19:02:41,825 INFO L231 Difference]: Finished difference. Result has 326 places, 673 transitions, 20783 flow [2023-08-30 19:02:41,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=19457, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20783, PETRI_PLACES=326, PETRI_TRANSITIONS=673} [2023-08-30 19:02:41,826 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2023-08-30 19:02:41,826 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 673 transitions, 20783 flow [2023-08-30 19:02:41,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:41,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:02:41,827 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] [2023-08-30 19:02:41,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-30 19:02:41,827 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:02:41,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:02:41,827 INFO L85 PathProgramCache]: Analyzing trace with hash -238784307, now seen corresponding path program 21 times [2023-08-30 19:02:41,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:02:41,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685552514] [2023-08-30 19:02:41,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:02:41,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:02:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:02:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:02:42,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:02:42,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685552514] [2023-08-30 19:02:42,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685552514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:02:42,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:02:42,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:02:42,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006711269] [2023-08-30 19:02:42,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:02:42,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:02:42,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:02:42,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:02:42,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:02:42,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:02:42,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 673 transitions, 20783 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:42,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:02:42,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:02:42,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:02:46,257 INFO L130 PetriNetUnfolder]: 6659/11951 cut-off events. [2023-08-30 19:02:46,257 INFO L131 PetriNetUnfolder]: For 379255/379255 co-relation queries the response was YES. [2023-08-30 19:02:46,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98937 conditions, 11951 events. 6659/11951 cut-off events. For 379255/379255 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 94744 event pairs, 1895 based on Foata normal form. 8/11959 useless extension candidates. Maximal degree in co-relation 98809. Up to 7602 conditions per place. [2023-08-30 19:02:46,374 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 436 selfloop transitions, 319 changer transitions 0/755 dead transitions. [2023-08-30 19:02:46,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 755 transitions, 23338 flow [2023-08-30 19:02:46,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:02:46,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:02:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2269 transitions. [2023-08-30 19:02:46,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4204187511580508 [2023-08-30 19:02:46,376 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2269 transitions. [2023-08-30 19:02:46,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2269 transitions. [2023-08-30 19:02:46,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:02:46,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2269 transitions. [2023-08-30 19:02:46,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.14285714285717) internal successors, (2269), 7 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:46,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:46,380 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:46,380 INFO L175 Difference]: Start difference. First operand has 326 places, 673 transitions, 20783 flow. Second operand 7 states and 2269 transitions. [2023-08-30 19:02:46,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 755 transitions, 23338 flow [2023-08-30 19:02:49,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 755 transitions, 22874 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 19:02:49,453 INFO L231 Difference]: Finished difference. Result has 333 places, 684 transitions, 21530 flow [2023-08-30 19:02:49,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=20325, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21530, PETRI_PLACES=333, PETRI_TRANSITIONS=684} [2023-08-30 19:02:49,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2023-08-30 19:02:49,454 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 684 transitions, 21530 flow [2023-08-30 19:02:49,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:49,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:02:49,454 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] [2023-08-30 19:02:49,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-30 19:02:49,455 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:02:49,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:02:49,455 INFO L85 PathProgramCache]: Analyzing trace with hash -68082012, now seen corresponding path program 27 times [2023-08-30 19:02:49,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:02:49,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741266995] [2023-08-30 19:02:49,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:02:49,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:02:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:02:49,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:02:49,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:02:49,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741266995] [2023-08-30 19:02:49,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741266995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:02:49,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:02:49,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 19:02:49,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161434272] [2023-08-30 19:02:49,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:02:49,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:02:49,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:02:49,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:02:49,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:02:50,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:02:50,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 684 transitions, 21530 flow. Second operand has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 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) [2023-08-30 19:02:50,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:02:50,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:02:50,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:02:54,483 INFO L130 PetriNetUnfolder]: 6677/11991 cut-off events. [2023-08-30 19:02:54,484 INFO L131 PetriNetUnfolder]: For 382643/382643 co-relation queries the response was YES. [2023-08-30 19:02:54,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100572 conditions, 11991 events. 6677/11991 cut-off events. For 382643/382643 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95530 event pairs, 783 based on Foata normal form. 4/11995 useless extension candidates. Maximal degree in co-relation 100440. Up to 4835 conditions per place. [2023-08-30 19:02:54,612 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 483 selfloop transitions, 321 changer transitions 0/804 dead transitions. [2023-08-30 19:02:54,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 804 transitions, 24786 flow [2023-08-30 19:02:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 19:02:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 19:02:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2556 transitions. [2023-08-30 19:02:54,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143968871595331 [2023-08-30 19:02:54,614 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2556 transitions. [2023-08-30 19:02:54,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2556 transitions. [2023-08-30 19:02:54,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:02:54,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2556 transitions. [2023-08-30 19:02:54,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 319.5) internal successors, (2556), 8 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:54,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:54,619 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:54,619 INFO L175 Difference]: Start difference. First operand has 333 places, 684 transitions, 21530 flow. Second operand 8 states and 2556 transitions. [2023-08-30 19:02:54,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 804 transitions, 24786 flow [2023-08-30 19:02:57,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 804 transitions, 24250 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-30 19:02:57,619 INFO L231 Difference]: Finished difference. Result has 337 places, 702 transitions, 22312 flow [2023-08-30 19:02:57,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=20942, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22312, PETRI_PLACES=337, PETRI_TRANSITIONS=702} [2023-08-30 19:02:57,619 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2023-08-30 19:02:57,619 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 702 transitions, 22312 flow [2023-08-30 19:02:57,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 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) [2023-08-30 19:02:57,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:02:57,620 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] [2023-08-30 19:02:57,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-30 19:02:57,620 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:02:57,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:02:57,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2017718955, now seen corresponding path program 22 times [2023-08-30 19:02:57,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:02:57,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605318411] [2023-08-30 19:02:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:02:57,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:02:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:02:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:02:57,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:02:57,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605318411] [2023-08-30 19:02:57,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605318411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:02:57,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:02:57,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:02:57,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394740005] [2023-08-30 19:02:57,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:02:57,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:02:57,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:02:57,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:02:57,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:02:58,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:02:58,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 702 transitions, 22312 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:02:58,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:02:58,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:02:58,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:03:02,226 INFO L130 PetriNetUnfolder]: 6673/11987 cut-off events. [2023-08-30 19:03:02,226 INFO L131 PetriNetUnfolder]: For 412287/412287 co-relation queries the response was YES. [2023-08-30 19:03:02,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102985 conditions, 11987 events. 6673/11987 cut-off events. For 412287/412287 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95177 event pairs, 1849 based on Foata normal form. 4/11991 useless extension candidates. Maximal degree in co-relation 102854. Up to 7634 conditions per place. [2023-08-30 19:03:02,337 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 443 selfloop transitions, 332 changer transitions 5/780 dead transitions. [2023-08-30 19:03:02,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 780 transitions, 24659 flow [2023-08-30 19:03:02,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:03:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:03:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-30 19:03:02,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161571243283306 [2023-08-30 19:03:02,339 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-30 19:03:02,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-30 19:03:02,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:03:02,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-30 19:03:02,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:02,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:02,343 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:02,343 INFO L175 Difference]: Start difference. First operand has 337 places, 702 transitions, 22312 flow. Second operand 7 states and 2246 transitions. [2023-08-30 19:03:02,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 780 transitions, 24659 flow [2023-08-30 19:03:05,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 780 transitions, 24333 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-30 19:03:05,329 INFO L231 Difference]: Finished difference. Result has 340 places, 699 transitions, 22509 flow [2023-08-30 19:03:05,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21939, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22509, PETRI_PLACES=340, PETRI_TRANSITIONS=699} [2023-08-30 19:03:05,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2023-08-30 19:03:05,330 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 699 transitions, 22509 flow [2023-08-30 19:03:05,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:05,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:03:05,331 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] [2023-08-30 19:03:05,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-30 19:03:05,331 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:03:05,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:03:05,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1813531806, now seen corresponding path program 28 times [2023-08-30 19:03:05,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:03:05,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839054779] [2023-08-30 19:03:05,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:03:05,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:03:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:03:05,560 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:03:05,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:03:05,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839054779] [2023-08-30 19:03:05,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839054779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:03:05,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:03:05,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:03:05,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064405212] [2023-08-30 19:03:05,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:03:05,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:03:05,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:03:05,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:03:05,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:03:05,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:03:05,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 699 transitions, 22509 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:05,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:03:05,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:03:05,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:03:10,263 INFO L130 PetriNetUnfolder]: 6651/11943 cut-off events. [2023-08-30 19:03:10,263 INFO L131 PetriNetUnfolder]: For 414860/414860 co-relation queries the response was YES. [2023-08-30 19:03:10,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102976 conditions, 11943 events. 6651/11943 cut-off events. For 414860/414860 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 94447 event pairs, 1765 based on Foata normal form. 6/11949 useless extension candidates. Maximal degree in co-relation 102845. Up to 3870 conditions per place. [2023-08-30 19:03:10,392 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 507 selfloop transitions, 273 changer transitions 6/786 dead transitions. [2023-08-30 19:03:10,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 786 transitions, 25087 flow [2023-08-30 19:03:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:03:10,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:03:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2259 transitions. [2023-08-30 19:03:10,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41856586992773764 [2023-08-30 19:03:10,394 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2259 transitions. [2023-08-30 19:03:10,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2259 transitions. [2023-08-30 19:03:10,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:03:10,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2259 transitions. [2023-08-30 19:03:10,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.7142857142857) internal successors, (2259), 7 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:10,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:10,398 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:10,398 INFO L175 Difference]: Start difference. First operand has 340 places, 699 transitions, 22509 flow. Second operand 7 states and 2259 transitions. [2023-08-30 19:03:10,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 786 transitions, 25087 flow [2023-08-30 19:03:13,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 786 transitions, 24586 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-08-30 19:03:13,627 INFO L231 Difference]: Finished difference. Result has 342 places, 696 transitions, 22475 flow [2023-08-30 19:03:13,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21957, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22475, PETRI_PLACES=342, PETRI_TRANSITIONS=696} [2023-08-30 19:03:13,628 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2023-08-30 19:03:13,628 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 696 transitions, 22475 flow [2023-08-30 19:03:13,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:13,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:03:13,629 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] [2023-08-30 19:03:13,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-30 19:03:13,629 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:03:13,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:03:13,629 INFO L85 PathProgramCache]: Analyzing trace with hash -708909313, now seen corresponding path program 23 times [2023-08-30 19:03:13,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:03:13,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137183476] [2023-08-30 19:03:13,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:03:13,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:03:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:03:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:03:13,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:03:13,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137183476] [2023-08-30 19:03:13,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137183476] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:03:13,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:03:13,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:03:13,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317809749] [2023-08-30 19:03:13,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:03:13,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:03:13,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:03:13,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:03:13,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:03:14,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:03:14,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 696 transitions, 22475 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:14,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:03:14,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:03:14,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:03:18,369 INFO L130 PetriNetUnfolder]: 6655/11965 cut-off events. [2023-08-30 19:03:18,369 INFO L131 PetriNetUnfolder]: For 411926/411926 co-relation queries the response was YES. [2023-08-30 19:03:18,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102435 conditions, 11965 events. 6655/11965 cut-off events. For 411926/411926 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95036 event pairs, 1855 based on Foata normal form. 8/11973 useless extension candidates. Maximal degree in co-relation 102305. Up to 7604 conditions per place. [2023-08-30 19:03:18,487 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 438 selfloop transitions, 330 changer transitions 1/769 dead transitions. [2023-08-30 19:03:18,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 769 transitions, 24802 flow [2023-08-30 19:03:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:03:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:03:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2244 transitions. [2023-08-30 19:03:18,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578654808226795 [2023-08-30 19:03:18,489 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2244 transitions. [2023-08-30 19:03:18,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2244 transitions. [2023-08-30 19:03:18,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:03:18,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2244 transitions. [2023-08-30 19:03:18,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.57142857142856) internal successors, (2244), 7 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:18,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:18,493 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:18,493 INFO L175 Difference]: Start difference. First operand has 342 places, 696 transitions, 22475 flow. Second operand 7 states and 2244 transitions. [2023-08-30 19:03:18,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 769 transitions, 24802 flow [2023-08-30 19:03:21,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 769 transitions, 24320 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 19:03:21,680 INFO L231 Difference]: Finished difference. Result has 346 places, 698 transitions, 22713 flow [2023-08-30 19:03:21,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21953, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22713, PETRI_PLACES=346, PETRI_TRANSITIONS=698} [2023-08-30 19:03:21,681 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2023-08-30 19:03:21,681 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 698 transitions, 22713 flow [2023-08-30 19:03:21,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:21,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:03:21,682 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] [2023-08-30 19:03:21,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-30 19:03:21,682 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:03:21,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:03:21,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1494227853, now seen corresponding path program 24 times [2023-08-30 19:03:21,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:03:21,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486589520] [2023-08-30 19:03:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:03:21,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:03:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:03:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:03:21,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:03:21,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486589520] [2023-08-30 19:03:21,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486589520] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:03:21,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:03:21,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:03:21,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341056474] [2023-08-30 19:03:21,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:03:21,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:03:21,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:03:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:03:21,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:03:22,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:03:22,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 698 transitions, 22713 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:22,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:03:22,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:03:22,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:03:26,191 INFO L130 PetriNetUnfolder]: 6649/11935 cut-off events. [2023-08-30 19:03:26,192 INFO L131 PetriNetUnfolder]: For 417781/417781 co-relation queries the response was YES. [2023-08-30 19:03:26,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102947 conditions, 11935 events. 6649/11935 cut-off events. For 417781/417781 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 94577 event pairs, 1839 based on Foata normal form. 4/11939 useless extension candidates. Maximal degree in co-relation 102815. Up to 7604 conditions per place. [2023-08-30 19:03:26,320 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 430 selfloop transitions, 330 changer transitions 0/760 dead transitions. [2023-08-30 19:03:26,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 760 transitions, 24882 flow [2023-08-30 19:03:26,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:03:26,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:03:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2252 transitions. [2023-08-30 19:03:26,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41726885306651845 [2023-08-30 19:03:26,322 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2252 transitions. [2023-08-30 19:03:26,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2252 transitions. [2023-08-30 19:03:26,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:03:26,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2252 transitions. [2023-08-30 19:03:26,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.7142857142857) internal successors, (2252), 7 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:26,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:26,326 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:26,326 INFO L175 Difference]: Start difference. First operand has 346 places, 698 transitions, 22713 flow. Second operand 7 states and 2252 transitions. [2023-08-30 19:03:26,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 760 transitions, 24882 flow [2023-08-30 19:03:29,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 760 transitions, 24271 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 19:03:29,407 INFO L231 Difference]: Finished difference. Result has 347 places, 697 transitions, 22730 flow [2023-08-30 19:03:29,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22070, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22730, PETRI_PLACES=347, PETRI_TRANSITIONS=697} [2023-08-30 19:03:29,408 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2023-08-30 19:03:29,408 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 697 transitions, 22730 flow [2023-08-30 19:03:29,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:29,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:03:29,408 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] [2023-08-30 19:03:29,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-30 19:03:29,409 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:03:29,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:03:29,409 INFO L85 PathProgramCache]: Analyzing trace with hash -790790675, now seen corresponding path program 25 times [2023-08-30 19:03:29,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:03:29,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704863726] [2023-08-30 19:03:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:03:29,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:03:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:03:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:03:29,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:03:29,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704863726] [2023-08-30 19:03:29,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704863726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:03:29,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:03:29,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:03:29,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412811814] [2023-08-30 19:03:29,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:03:29,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:03:29,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:03:29,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:03:29,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:03:29,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:03:29,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 697 transitions, 22730 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:29,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:03:29,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:03:29,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:03:34,229 INFO L130 PetriNetUnfolder]: 6629/11891 cut-off events. [2023-08-30 19:03:34,229 INFO L131 PetriNetUnfolder]: For 417919/417919 co-relation queries the response was YES. [2023-08-30 19:03:34,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102778 conditions, 11891 events. 6629/11891 cut-off events. For 417919/417919 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 94062 event pairs, 1927 based on Foata normal form. 8/11899 useless extension candidates. Maximal degree in co-relation 102647. Up to 7604 conditions per place. [2023-08-30 19:03:34,349 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 441 selfloop transitions, 330 changer transitions 1/772 dead transitions. [2023-08-30 19:03:34,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 772 transitions, 24973 flow [2023-08-30 19:03:34,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:03:34,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:03:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2264 transitions. [2023-08-30 19:03:34,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194923105428942 [2023-08-30 19:03:34,351 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2264 transitions. [2023-08-30 19:03:34,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2264 transitions. [2023-08-30 19:03:34,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:03:34,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2264 transitions. [2023-08-30 19:03:34,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.42857142857144) internal successors, (2264), 7 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:34,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:34,355 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:34,355 INFO L175 Difference]: Start difference. First operand has 347 places, 697 transitions, 22730 flow. Second operand 7 states and 2264 transitions. [2023-08-30 19:03:34,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 772 transitions, 24973 flow [2023-08-30 19:03:37,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 772 transitions, 24309 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 19:03:37,465 INFO L231 Difference]: Finished difference. Result has 350 places, 697 transitions, 22712 flow [2023-08-30 19:03:37,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22023, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22712, PETRI_PLACES=350, PETRI_TRANSITIONS=697} [2023-08-30 19:03:37,466 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2023-08-30 19:03:37,467 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 697 transitions, 22712 flow [2023-08-30 19:03:37,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:37,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:03:37,467 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] [2023-08-30 19:03:37,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-30 19:03:37,468 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:03:37,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:03:37,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2052057265, now seen corresponding path program 26 times [2023-08-30 19:03:37,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:03:37,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375703996] [2023-08-30 19:03:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:03:37,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:03:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:03:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:03:37,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:03:37,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375703996] [2023-08-30 19:03:37,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375703996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:03:37,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:03:37,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:03:37,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781846663] [2023-08-30 19:03:37,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:03:37,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:03:37,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:03:37,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:03:37,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:03:37,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:03:37,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 697 transitions, 22712 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:37,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:03:37,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:03:37,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:03:42,866 INFO L130 PetriNetUnfolder]: 7334/13402 cut-off events. [2023-08-30 19:03:42,866 INFO L131 PetriNetUnfolder]: For 442791/442791 co-relation queries the response was YES. [2023-08-30 19:03:42,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112278 conditions, 13402 events. 7334/13402 cut-off events. For 442791/442791 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 111626 event pairs, 1079 based on Foata normal form. 10/13412 useless extension candidates. Maximal degree in co-relation 112145. Up to 5787 conditions per place. [2023-08-30 19:03:43,029 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 427 selfloop transitions, 473 changer transitions 1/901 dead transitions. [2023-08-30 19:03:43,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 901 transitions, 28292 flow [2023-08-30 19:03:43,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 19:03:43,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 19:03:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3190 transitions. [2023-08-30 19:03:43,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41374837872892345 [2023-08-30 19:03:43,032 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3190 transitions. [2023-08-30 19:03:43,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3190 transitions. [2023-08-30 19:03:43,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:03:43,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3190 transitions. [2023-08-30 19:03:43,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 319.0) internal successors, (3190), 10 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:43,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:43,040 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:43,040 INFO L175 Difference]: Start difference. First operand has 350 places, 697 transitions, 22712 flow. Second operand 10 states and 3190 transitions. [2023-08-30 19:03:43,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 901 transitions, 28292 flow [2023-08-30 19:03:46,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 901 transitions, 27577 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 19:03:46,775 INFO L231 Difference]: Finished difference. Result has 356 places, 771 transitions, 25341 flow [2023-08-30 19:03:46,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22065, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25341, PETRI_PLACES=356, PETRI_TRANSITIONS=771} [2023-08-30 19:03:46,776 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2023-08-30 19:03:46,776 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 771 transitions, 25341 flow [2023-08-30 19:03:46,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:46,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:03:46,777 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] [2023-08-30 19:03:46,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-30 19:03:46,777 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:03:46,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:03:46,777 INFO L85 PathProgramCache]: Analyzing trace with hash -630506158, now seen corresponding path program 29 times [2023-08-30 19:03:46,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:03:46,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618606188] [2023-08-30 19:03:46,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:03:46,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:03:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:03:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:03:47,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:03:47,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618606188] [2023-08-30 19:03:47,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618606188] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 19:03:47,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905651470] [2023-08-30 19:03:47,107 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 19:03:47,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:03:47,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:03:47,110 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 19:03:47,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 19:03:47,287 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 19:03:47,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 19:03:47,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 19:03:47,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:03:47,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:03:47,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 19:03:47,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:03:47,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905651470] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 19:03:47,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 19:03:47,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 18 [2023-08-30 19:03:47,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648548509] [2023-08-30 19:03:47,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:03:47,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:03:47,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:03:47,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:03:47,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-08-30 19:03:48,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 771 [2023-08-30 19:03:48,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 771 transitions, 25341 flow. Second operand has 8 states, 8 states have (on average 303.75) internal successors, (2430), 8 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:48,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:03:48,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 771 [2023-08-30 19:03:48,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:03:53,450 INFO L130 PetriNetUnfolder]: 7376/13474 cut-off events. [2023-08-30 19:03:53,450 INFO L131 PetriNetUnfolder]: For 475315/475315 co-relation queries the response was YES. [2023-08-30 19:03:53,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117623 conditions, 13474 events. 7376/13474 cut-off events. For 475315/475315 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 111222 event pairs, 2077 based on Foata normal form. 6/13480 useless extension candidates. Maximal degree in co-relation 117489. Up to 5815 conditions per place. [2023-08-30 19:03:53,590 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 516 selfloop transitions, 334 changer transitions 14/864 dead transitions. [2023-08-30 19:03:53,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 864 transitions, 28302 flow [2023-08-30 19:03:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 19:03:53,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 19:03:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2507 transitions. [2023-08-30 19:03:53,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064526588845655 [2023-08-30 19:03:53,592 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2507 transitions. [2023-08-30 19:03:53,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2507 transitions. [2023-08-30 19:03:53,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:03:53,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2507 transitions. [2023-08-30 19:03:53,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 313.375) internal successors, (2507), 8 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:53,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:53,596 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:53,596 INFO L175 Difference]: Start difference. First operand has 356 places, 771 transitions, 25341 flow. Second operand 8 states and 2507 transitions. [2023-08-30 19:03:53,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 864 transitions, 28302 flow [2023-08-30 19:03:58,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 864 transitions, 27636 flow, removed 70 selfloop flow, removed 3 redundant places. [2023-08-30 19:03:58,255 INFO L231 Difference]: Finished difference. Result has 363 places, 776 transitions, 25619 flow [2023-08-30 19:03:58,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=24681, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25619, PETRI_PLACES=363, PETRI_TRANSITIONS=776} [2023-08-30 19:03:58,256 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2023-08-30 19:03:58,256 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 776 transitions, 25619 flow [2023-08-30 19:03:58,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 303.75) internal successors, (2430), 8 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:03:58,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:03:58,257 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] [2023-08-30 19:03:58,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 19:03:58,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:03:58,465 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:03:58,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:03:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash 246931528, now seen corresponding path program 30 times [2023-08-30 19:03:58,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:03:58,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972645324] [2023-08-30 19:03:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:03:58,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:03:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:03:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:03:58,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:03:58,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972645324] [2023-08-30 19:03:58,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972645324] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 19:03:58,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314264686] [2023-08-30 19:03:58,721 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 19:03:58,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:03:58,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:03:58,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 19:03:58,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 19:03:58,907 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 19:03:58,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 19:03:58,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 19:03:58,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:03:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:03:59,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 19:03:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:03:59,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314264686] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 19:03:59,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 19:03:59,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-30 19:03:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227841545] [2023-08-30 19:03:59,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 19:03:59,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 19:03:59,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:03:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 19:03:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-08-30 19:04:00,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 771 [2023-08-30 19:04:00,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 776 transitions, 25619 flow. Second operand has 17 states, 17 states have (on average 298.3529411764706) internal successors, (5072), 17 states have internal predecessors, (5072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:00,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:04:00,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 771 [2023-08-30 19:04:00,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:04:05,297 INFO L130 PetriNetUnfolder]: 7225/13181 cut-off events. [2023-08-30 19:04:05,297 INFO L131 PetriNetUnfolder]: For 460323/460323 co-relation queries the response was YES. [2023-08-30 19:04:05,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114472 conditions, 13181 events. 7225/13181 cut-off events. For 460323/460323 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 108291 event pairs, 1877 based on Foata normal form. 20/13201 useless extension candidates. Maximal degree in co-relation 114335. Up to 4389 conditions per place. [2023-08-30 19:04:05,431 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 450 selfloop transitions, 396 changer transitions 0/846 dead transitions. [2023-08-30 19:04:05,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 846 transitions, 28058 flow [2023-08-30 19:04:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:04:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:04:05,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2159 transitions. [2023-08-30 19:04:05,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4000370576246063 [2023-08-30 19:04:05,433 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2159 transitions. [2023-08-30 19:04:05,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2159 transitions. [2023-08-30 19:04:05,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:04:05,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2159 transitions. [2023-08-30 19:04:05,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 308.42857142857144) internal successors, (2159), 7 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:05,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:05,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:05,437 INFO L175 Difference]: Start difference. First operand has 363 places, 776 transitions, 25619 flow. Second operand 7 states and 2159 transitions. [2023-08-30 19:04:05,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 846 transitions, 28058 flow [2023-08-30 19:04:09,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 846 transitions, 27672 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-30 19:04:09,634 INFO L231 Difference]: Finished difference. Result has 366 places, 773 transitions, 25989 flow [2023-08-30 19:04:09,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25074, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25989, PETRI_PLACES=366, PETRI_TRANSITIONS=773} [2023-08-30 19:04:09,635 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2023-08-30 19:04:09,635 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 773 transitions, 25989 flow [2023-08-30 19:04:09,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 298.3529411764706) internal successors, (5072), 17 states have internal predecessors, (5072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:09,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:04:09,636 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] [2023-08-30 19:04:09,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 19:04:09,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:04:09,836 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:04:09,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:04:09,837 INFO L85 PathProgramCache]: Analyzing trace with hash -2146257214, now seen corresponding path program 31 times [2023-08-30 19:04:09,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:04:09,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513524659] [2023-08-30 19:04:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:04:09,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:04:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:04:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:04:10,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:04:10,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513524659] [2023-08-30 19:04:10,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513524659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:04:10,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:04:10,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:04:10,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568020959] [2023-08-30 19:04:10,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:04:10,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:04:10,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:04:10,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:04:10,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:04:10,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:04:10,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 773 transitions, 25989 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:10,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:04:10,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:04:10,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:04:15,142 INFO L130 PetriNetUnfolder]: 7209/13151 cut-off events. [2023-08-30 19:04:15,142 INFO L131 PetriNetUnfolder]: For 470322/470322 co-relation queries the response was YES. [2023-08-30 19:04:15,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114854 conditions, 13151 events. 7209/13151 cut-off events. For 470322/470322 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 107856 event pairs, 2065 based on Foata normal form. 6/13157 useless extension candidates. Maximal degree in co-relation 114717. Up to 5815 conditions per place. [2023-08-30 19:04:15,449 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 504 selfloop transitions, 329 changer transitions 6/839 dead transitions. [2023-08-30 19:04:15,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 839 transitions, 28358 flow [2023-08-30 19:04:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:04:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:04:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2260 transitions. [2023-08-30 19:04:15,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875115805076896 [2023-08-30 19:04:15,459 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2260 transitions. [2023-08-30 19:04:15,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2260 transitions. [2023-08-30 19:04:15,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:04:15,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2260 transitions. [2023-08-30 19:04:15,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.85714285714283) internal successors, (2260), 7 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:15,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:15,463 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:15,463 INFO L175 Difference]: Start difference. First operand has 366 places, 773 transitions, 25989 flow. Second operand 7 states and 2260 transitions. [2023-08-30 19:04:15,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 839 transitions, 28358 flow [2023-08-30 19:04:19,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 839 transitions, 27623 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 19:04:19,298 INFO L231 Difference]: Finished difference. Result has 369 places, 772 transitions, 25876 flow [2023-08-30 19:04:19,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25254, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25876, PETRI_PLACES=369, PETRI_TRANSITIONS=772} [2023-08-30 19:04:19,299 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2023-08-30 19:04:19,299 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 772 transitions, 25876 flow [2023-08-30 19:04:19,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:19,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:04:19,299 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] [2023-08-30 19:04:19,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-08-30 19:04:19,299 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:04:19,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:04:19,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1309243911, now seen corresponding path program 27 times [2023-08-30 19:04:19,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:04:19,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129353160] [2023-08-30 19:04:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:04:19,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:04:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:04:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:04:19,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:04:19,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129353160] [2023-08-30 19:04:19,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129353160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:04:19,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:04:19,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 19:04:19,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542489017] [2023-08-30 19:04:19,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:04:19,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:04:19,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:04:19,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:04:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:04:19,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 305 out of 771 [2023-08-30 19:04:19,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 772 transitions, 25876 flow. Second operand has 8 states, 8 states have (on average 307.75) internal successors, (2462), 8 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) [2023-08-30 19:04:19,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:04:19,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 305 of 771 [2023-08-30 19:04:19,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:04:24,735 INFO L130 PetriNetUnfolder]: 7193/13097 cut-off events. [2023-08-30 19:04:24,735 INFO L131 PetriNetUnfolder]: For 466219/466219 co-relation queries the response was YES. [2023-08-30 19:04:24,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114176 conditions, 13097 events. 7193/13097 cut-off events. For 466219/466219 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 107250 event pairs, 2179 based on Foata normal form. 4/13101 useless extension candidates. Maximal degree in co-relation 114038. Up to 8557 conditions per place. [2023-08-30 19:04:24,874 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 464 selfloop transitions, 365 changer transitions 0/829 dead transitions. [2023-08-30 19:04:24,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 829 transitions, 27907 flow [2023-08-30 19:04:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:04:24,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:04:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2225 transitions. [2023-08-30 19:04:24,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41226607374467295 [2023-08-30 19:04:24,877 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2225 transitions. [2023-08-30 19:04:24,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2225 transitions. [2023-08-30 19:04:24,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:04:24,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2225 transitions. [2023-08-30 19:04:24,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 317.85714285714283) internal successors, (2225), 7 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:24,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:24,880 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:24,880 INFO L175 Difference]: Start difference. First operand has 369 places, 772 transitions, 25876 flow. Second operand 7 states and 2225 transitions. [2023-08-30 19:04:24,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 829 transitions, 27907 flow [2023-08-30 19:04:28,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 829 transitions, 27322 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-08-30 19:04:28,866 INFO L231 Difference]: Finished difference. Result has 367 places, 772 transitions, 25996 flow [2023-08-30 19:04:28,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25219, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25996, PETRI_PLACES=367, PETRI_TRANSITIONS=772} [2023-08-30 19:04:28,867 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2023-08-30 19:04:28,867 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 772 transitions, 25996 flow [2023-08-30 19:04:28,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 307.75) internal successors, (2462), 8 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) [2023-08-30 19:04:28,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:04:28,868 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] [2023-08-30 19:04:28,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-08-30 19:04:28,868 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:04:28,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:04:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash 772055314, now seen corresponding path program 32 times [2023-08-30 19:04:28,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:04:28,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569924178] [2023-08-30 19:04:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:04:28,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:04:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:04:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:04:29,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:04:29,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569924178] [2023-08-30 19:04:29,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569924178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:04:29,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:04:29,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:04:29,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146442363] [2023-08-30 19:04:29,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:04:29,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:04:29,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:04:29,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:04:29,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:04:29,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:04:29,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 772 transitions, 25996 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:29,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:04:29,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:04:29,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:04:33,976 INFO L130 PetriNetUnfolder]: 7161/13037 cut-off events. [2023-08-30 19:04:33,977 INFO L131 PetriNetUnfolder]: For 472379/472379 co-relation queries the response was YES. [2023-08-30 19:04:34,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114256 conditions, 13037 events. 7161/13037 cut-off events. For 472379/472379 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 106485 event pairs, 2051 based on Foata normal form. 12/13049 useless extension candidates. Maximal degree in co-relation 114122. Up to 5768 conditions per place. [2023-08-30 19:04:34,320 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 505 selfloop transitions, 329 changer transitions 1/835 dead transitions. [2023-08-30 19:04:34,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 835 transitions, 28321 flow [2023-08-30 19:04:34,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:04:34,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:04:34,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2245 transitions. [2023-08-30 19:04:34,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597183620529926 [2023-08-30 19:04:34,322 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2245 transitions. [2023-08-30 19:04:34,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2245 transitions. [2023-08-30 19:04:34,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:04:34,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2245 transitions. [2023-08-30 19:04:34,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.7142857142857) internal successors, (2245), 7 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:34,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:34,326 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:34,326 INFO L175 Difference]: Start difference. First operand has 367 places, 772 transitions, 25996 flow. Second operand 7 states and 2245 transitions. [2023-08-30 19:04:34,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 835 transitions, 28321 flow [2023-08-30 19:04:38,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 835 transitions, 27802 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 19:04:38,454 INFO L231 Difference]: Finished difference. Result has 372 places, 770 transitions, 26072 flow [2023-08-30 19:04:38,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25442, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26072, PETRI_PLACES=372, PETRI_TRANSITIONS=770} [2023-08-30 19:04:38,455 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2023-08-30 19:04:38,455 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 770 transitions, 26072 flow [2023-08-30 19:04:38,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:38,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:04:38,456 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] [2023-08-30 19:04:38,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-08-30 19:04:38,456 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:04:38,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:04:38,456 INFO L85 PathProgramCache]: Analyzing trace with hash 129870617, now seen corresponding path program 28 times [2023-08-30 19:04:38,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:04:38,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578427120] [2023-08-30 19:04:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:04:38,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:04:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:04:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:04:38,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:04:38,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578427120] [2023-08-30 19:04:38,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578427120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:04:38,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:04:38,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:04:38,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137154599] [2023-08-30 19:04:38,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:04:38,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:04:38,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:04:38,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:04:38,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:04:38,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:04:38,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 770 transitions, 26072 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:38,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:04:38,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:04:38,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:04:43,602 INFO L130 PetriNetUnfolder]: 7148/13006 cut-off events. [2023-08-30 19:04:43,602 INFO L131 PetriNetUnfolder]: For 476231/476231 co-relation queries the response was YES. [2023-08-30 19:04:43,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113886 conditions, 13006 events. 7148/13006 cut-off events. For 476231/476231 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 106206 event pairs, 2163 based on Foata normal form. 4/13010 useless extension candidates. Maximal degree in co-relation 113751. Up to 8497 conditions per place. [2023-08-30 19:04:43,765 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 457 selfloop transitions, 360 changer transitions 4/821 dead transitions. [2023-08-30 19:04:43,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 821 transitions, 28087 flow [2023-08-30 19:04:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:04:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:04:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2260 transitions. [2023-08-30 19:04:43,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875115805076896 [2023-08-30 19:04:43,767 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2260 transitions. [2023-08-30 19:04:43,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2260 transitions. [2023-08-30 19:04:43,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:04:43,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2260 transitions. [2023-08-30 19:04:43,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.85714285714283) internal successors, (2260), 7 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:43,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:43,771 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:43,771 INFO L175 Difference]: Start difference. First operand has 372 places, 770 transitions, 26072 flow. Second operand 7 states and 2260 transitions. [2023-08-30 19:04:43,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 821 transitions, 28087 flow [2023-08-30 19:04:48,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 821 transitions, 27694 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-30 19:04:48,115 INFO L231 Difference]: Finished difference. Result has 376 places, 769 transitions, 26368 flow [2023-08-30 19:04:48,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25679, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26368, PETRI_PLACES=376, PETRI_TRANSITIONS=769} [2023-08-30 19:04:48,116 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2023-08-30 19:04:48,116 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 769 transitions, 26368 flow [2023-08-30 19:04:48,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:48,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:04:48,117 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] [2023-08-30 19:04:48,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-08-30 19:04:48,117 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:04:48,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:04:48,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1956490682, now seen corresponding path program 33 times [2023-08-30 19:04:48,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:04:48,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103202976] [2023-08-30 19:04:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:04:48,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:04:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:04:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:04:48,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:04:48,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103202976] [2023-08-30 19:04:48,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103202976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:04:48,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:04:48,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:04:48,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815083532] [2023-08-30 19:04:48,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:04:48,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:04:48,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:04:48,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:04:48,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:04:48,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:04:48,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 769 transitions, 26368 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:48,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:04:48,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:04:48,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:04:53,528 INFO L130 PetriNetUnfolder]: 7135/12975 cut-off events. [2023-08-30 19:04:53,528 INFO L131 PetriNetUnfolder]: For 485554/485554 co-relation queries the response was YES. [2023-08-30 19:04:53,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114241 conditions, 12975 events. 7135/12975 cut-off events. For 485554/485554 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 105636 event pairs, 2033 based on Foata normal form. 8/12983 useless extension candidates. Maximal degree in co-relation 114106. Up to 5746 conditions per place. [2023-08-30 19:04:53,674 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 498 selfloop transitions, 333 changer transitions 0/831 dead transitions. [2023-08-30 19:04:53,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 831 transitions, 28810 flow [2023-08-30 19:04:53,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:04:53,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:04:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2256 transitions. [2023-08-30 19:04:53,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180100055586437 [2023-08-30 19:04:53,676 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2256 transitions. [2023-08-30 19:04:53,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2256 transitions. [2023-08-30 19:04:53,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:04:53,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2256 transitions. [2023-08-30 19:04:53,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.2857142857143) internal successors, (2256), 7 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:53,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:53,680 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:53,680 INFO L175 Difference]: Start difference. First operand has 376 places, 769 transitions, 26368 flow. Second operand 7 states and 2256 transitions. [2023-08-30 19:04:53,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 831 transitions, 28810 flow [2023-08-30 19:04:58,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 831 transitions, 28070 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-08-30 19:04:58,094 INFO L231 Difference]: Finished difference. Result has 372 places, 771 transitions, 26419 flow [2023-08-30 19:04:58,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25540, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26419, PETRI_PLACES=372, PETRI_TRANSITIONS=771} [2023-08-30 19:04:58,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2023-08-30 19:04:58,095 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 771 transitions, 26419 flow [2023-08-30 19:04:58,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:58,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:04:58,096 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] [2023-08-30 19:04:58,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-08-30 19:04:58,096 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:04:58,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:04:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1288660147, now seen corresponding path program 29 times [2023-08-30 19:04:58,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:04:58,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897204610] [2023-08-30 19:04:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:04:58,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:04:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:04:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:04:58,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:04:58,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897204610] [2023-08-30 19:04:58,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897204610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:04:58,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:04:58,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:04:58,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997758272] [2023-08-30 19:04:58,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:04:58,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:04:58,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:04:58,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:04:58,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:04:58,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:04:58,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 771 transitions, 26419 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:04:58,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:04:58,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:04:58,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:05:03,075 INFO L130 PetriNetUnfolder]: 7092/12888 cut-off events. [2023-08-30 19:05:03,075 INFO L131 PetriNetUnfolder]: For 482954/482954 co-relation queries the response was YES. [2023-08-30 19:05:03,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113246 conditions, 12888 events. 7092/12888 cut-off events. For 482954/482954 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 104889 event pairs, 2167 based on Foata normal form. 26/12914 useless extension candidates. Maximal degree in co-relation 113114. Up to 8471 conditions per place. [2023-08-30 19:05:03,221 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 455 selfloop transitions, 367 changer transitions 0/822 dead transitions. [2023-08-30 19:05:03,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 822 transitions, 28451 flow [2023-08-30 19:05:03,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:05:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:05:03,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-30 19:05:03,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-30 19:05:03,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-30 19:05:03,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-30 19:05:03,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:05:03,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-30 19:05:03,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:03,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:03,227 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:03,227 INFO L175 Difference]: Start difference. First operand has 372 places, 771 transitions, 26419 flow. Second operand 7 states and 2265 transitions. [2023-08-30 19:05:03,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 822 transitions, 28451 flow [2023-08-30 19:05:07,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 822 transitions, 27787 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 19:05:07,209 INFO L231 Difference]: Finished difference. Result has 374 places, 772 transitions, 26523 flow [2023-08-30 19:05:07,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25735, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26523, PETRI_PLACES=374, PETRI_TRANSITIONS=772} [2023-08-30 19:05:07,211 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2023-08-30 19:05:07,211 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 772 transitions, 26523 flow [2023-08-30 19:05:07,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:07,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:05:07,212 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] [2023-08-30 19:05:07,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-08-30 19:05:07,212 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:05:07,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:05:07,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1855671599, now seen corresponding path program 30 times [2023-08-30 19:05:07,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:05:07,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994545606] [2023-08-30 19:05:07,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:05:07,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:05:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:05:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:05:07,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:05:07,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994545606] [2023-08-30 19:05:07,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994545606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:05:07,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:05:07,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:05:07,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033171024] [2023-08-30 19:05:07,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:05:07,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:05:07,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:05:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:05:07,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:05:07,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:05:07,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 772 transitions, 26523 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:07,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:05:07,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:05:07,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:05:12,365 INFO L130 PetriNetUnfolder]: 7072/12844 cut-off events. [2023-08-30 19:05:12,366 INFO L131 PetriNetUnfolder]: For 481441/481441 co-relation queries the response was YES. [2023-08-30 19:05:12,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113249 conditions, 12844 events. 7072/12844 cut-off events. For 481441/481441 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 104359 event pairs, 2165 based on Foata normal form. 8/12852 useless extension candidates. Maximal degree in co-relation 113116. Up to 8471 conditions per place. [2023-08-30 19:05:12,506 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 460 selfloop transitions, 362 changer transitions 1/823 dead transitions. [2023-08-30 19:05:12,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 823 transitions, 28481 flow [2023-08-30 19:05:12,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:05:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:05:12,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2249 transitions. [2023-08-30 19:05:12,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4167129886974245 [2023-08-30 19:05:12,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2249 transitions. [2023-08-30 19:05:12,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2249 transitions. [2023-08-30 19:05:12,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:05:12,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2249 transitions. [2023-08-30 19:05:12,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.2857142857143) internal successors, (2249), 7 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:12,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:12,513 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:12,513 INFO L175 Difference]: Start difference. First operand has 374 places, 772 transitions, 26523 flow. Second operand 7 states and 2249 transitions. [2023-08-30 19:05:12,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 823 transitions, 28481 flow [2023-08-30 19:05:16,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 823 transitions, 27770 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-30 19:05:16,887 INFO L231 Difference]: Finished difference. Result has 377 places, 770 transitions, 26454 flow [2023-08-30 19:05:16,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25759, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26454, PETRI_PLACES=377, PETRI_TRANSITIONS=770} [2023-08-30 19:05:16,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-08-30 19:05:16,888 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 770 transitions, 26454 flow [2023-08-30 19:05:16,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:16,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:05:16,889 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] [2023-08-30 19:05:16,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-08-30 19:05:16,889 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:05:16,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:05:16,890 INFO L85 PathProgramCache]: Analyzing trace with hash 885212803, now seen corresponding path program 31 times [2023-08-30 19:05:16,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:05:16,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035481919] [2023-08-30 19:05:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:05:16,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:05:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:05:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:05:17,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:05:17,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035481919] [2023-08-30 19:05:17,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035481919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:05:17,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:05:17,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:05:17,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602325344] [2023-08-30 19:05:17,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:05:17,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:05:17,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:05:17,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:05:17,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:05:17,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:05:17,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 770 transitions, 26454 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:17,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:05:17,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:05:17,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:05:22,270 INFO L130 PetriNetUnfolder]: 7057/12813 cut-off events. [2023-08-30 19:05:22,270 INFO L131 PetriNetUnfolder]: For 481095/481095 co-relation queries the response was YES. [2023-08-30 19:05:22,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112933 conditions, 12813 events. 7057/12813 cut-off events. For 481095/481095 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 104000 event pairs, 2155 based on Foata normal form. 10/12823 useless extension candidates. Maximal degree in co-relation 112799. Up to 8471 conditions per place. [2023-08-30 19:05:22,521 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 456 selfloop transitions, 365 changer transitions 0/821 dead transitions. [2023-08-30 19:05:22,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 821 transitions, 28471 flow [2023-08-30 19:05:22,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:05:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:05:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2262 transitions. [2023-08-30 19:05:22,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4191217342968316 [2023-08-30 19:05:22,523 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2262 transitions. [2023-08-30 19:05:22,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2262 transitions. [2023-08-30 19:05:22,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:05:22,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2262 transitions. [2023-08-30 19:05:22,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.14285714285717) internal successors, (2262), 7 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:22,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:22,527 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:22,527 INFO L175 Difference]: Start difference. First operand has 377 places, 770 transitions, 26454 flow. Second operand 7 states and 2262 transitions. [2023-08-30 19:05:22,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 821 transitions, 28471 flow [2023-08-30 19:05:26,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 821 transitions, 27766 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-30 19:05:26,637 INFO L231 Difference]: Finished difference. Result has 377 places, 772 transitions, 26518 flow [2023-08-30 19:05:26,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25714, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26518, PETRI_PLACES=377, PETRI_TRANSITIONS=772} [2023-08-30 19:05:26,639 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-08-30 19:05:26,639 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 772 transitions, 26518 flow [2023-08-30 19:05:26,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:26,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:05:26,639 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] [2023-08-30 19:05:26,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-08-30 19:05:26,639 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:05:26,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:05:26,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1581748409, now seen corresponding path program 32 times [2023-08-30 19:05:26,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:05:26,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953510353] [2023-08-30 19:05:26,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:05:26,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:05:26,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:05:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:05:26,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:05:26,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953510353] [2023-08-30 19:05:26,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953510353] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:05:26,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:05:26,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:05:26,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911706351] [2023-08-30 19:05:26,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:05:26,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:05:26,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:05:26,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:05:26,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:05:27,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:05:27,032 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 772 transitions, 26518 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:27,032 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:05:27,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:05:27,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:05:32,791 INFO L130 PetriNetUnfolder]: 8534/15680 cut-off events. [2023-08-30 19:05:32,791 INFO L131 PetriNetUnfolder]: For 578296/578296 co-relation queries the response was YES. [2023-08-30 19:05:32,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135815 conditions, 15680 events. 8534/15680 cut-off events. For 578296/578296 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 132955 event pairs, 1957 based on Foata normal form. 22/15702 useless extension candidates. Maximal degree in co-relation 135683. Up to 7742 conditions per place. [2023-08-30 19:05:33,000 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 727 selfloop transitions, 238 changer transitions 1/966 dead transitions. [2023-08-30 19:05:33,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 966 transitions, 32858 flow [2023-08-30 19:05:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:05:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:05:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2267 transitions. [2023-08-30 19:05:33,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42004817491198815 [2023-08-30 19:05:33,003 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2267 transitions. [2023-08-30 19:05:33,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2267 transitions. [2023-08-30 19:05:33,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:05:33,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2267 transitions. [2023-08-30 19:05:33,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.85714285714283) internal successors, (2267), 7 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:33,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:33,008 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:33,008 INFO L175 Difference]: Start difference. First operand has 377 places, 772 transitions, 26518 flow. Second operand 7 states and 2267 transitions. [2023-08-30 19:05:33,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 966 transitions, 32858 flow [2023-08-30 19:05:38,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 966 transitions, 32018 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 19:05:38,647 INFO L231 Difference]: Finished difference. Result has 382 places, 832 transitions, 28489 flow [2023-08-30 19:05:38,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25790, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28489, PETRI_PLACES=382, PETRI_TRANSITIONS=832} [2023-08-30 19:05:38,648 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2023-08-30 19:05:38,648 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 832 transitions, 28489 flow [2023-08-30 19:05:38,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:38,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:05:38,649 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] [2023-08-30 19:05:38,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-08-30 19:05:38,649 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:05:38,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:05:38,649 INFO L85 PathProgramCache]: Analyzing trace with hash 612043710, now seen corresponding path program 34 times [2023-08-30 19:05:38,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:05:38,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432934963] [2023-08-30 19:05:38,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:05:38,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:05:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:05:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:05:38,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:05:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432934963] [2023-08-30 19:05:38,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432934963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:05:38,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:05:38,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:05:38,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226341400] [2023-08-30 19:05:38,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:05:38,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:05:38,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:05:38,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:05:38,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:05:39,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:05:39,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 832 transitions, 28489 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:39,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:05:39,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:05:39,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:05:45,326 INFO L130 PetriNetUnfolder]: 8517/15645 cut-off events. [2023-08-30 19:05:45,326 INFO L131 PetriNetUnfolder]: For 584379/584379 co-relation queries the response was YES. [2023-08-30 19:05:45,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137168 conditions, 15645 events. 8517/15645 cut-off events. For 584379/584379 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 132610 event pairs, 3455 based on Foata normal form. 6/15651 useless extension candidates. Maximal degree in co-relation 137032. Up to 11873 conditions per place. [2023-08-30 19:05:45,491 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 671 selfloop transitions, 228 changer transitions 9/908 dead transitions. [2023-08-30 19:05:45,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 908 transitions, 30994 flow [2023-08-30 19:05:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:05:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:05:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2266 transitions. [2023-08-30 19:05:45,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41986288678895684 [2023-08-30 19:05:45,493 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2266 transitions. [2023-08-30 19:05:45,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2266 transitions. [2023-08-30 19:05:45,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:05:45,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2266 transitions. [2023-08-30 19:05:45,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.7142857142857) internal successors, (2266), 7 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:45,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:45,497 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:45,497 INFO L175 Difference]: Start difference. First operand has 382 places, 832 transitions, 28489 flow. Second operand 7 states and 2266 transitions. [2023-08-30 19:05:45,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 908 transitions, 30994 flow [2023-08-30 19:05:50,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 908 transitions, 30707 flow, removed 129 selfloop flow, removed 1 redundant places. [2023-08-30 19:05:51,007 INFO L231 Difference]: Finished difference. Result has 388 places, 835 transitions, 28711 flow [2023-08-30 19:05:51,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=28161, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28711, PETRI_PLACES=388, PETRI_TRANSITIONS=835} [2023-08-30 19:05:51,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2023-08-30 19:05:51,008 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 835 transitions, 28711 flow [2023-08-30 19:05:51,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:51,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:05:51,009 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] [2023-08-30 19:05:51,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-08-30 19:05:51,009 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:05:51,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:05:51,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1055451217, now seen corresponding path program 33 times [2023-08-30 19:05:51,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:05:51,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110344277] [2023-08-30 19:05:51,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:05:51,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:05:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:05:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:05:51,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:05:51,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110344277] [2023-08-30 19:05:51,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110344277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:05:51,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:05:51,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 19:05:51,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514438758] [2023-08-30 19:05:51,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:05:51,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:05:51,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:05:51,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:05:51,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:05:51,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:05:51,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 835 transitions, 28711 flow. Second operand has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:51,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:05:51,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:05:51,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:05:58,105 INFO L130 PetriNetUnfolder]: 9298/17120 cut-off events. [2023-08-30 19:05:58,106 INFO L131 PetriNetUnfolder]: For 621787/621787 co-relation queries the response was YES. [2023-08-30 19:05:58,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149111 conditions, 17120 events. 9298/17120 cut-off events. For 621787/621787 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 147417 event pairs, 1918 based on Foata normal form. 16/17136 useless extension candidates. Maximal degree in co-relation 148974. Up to 7742 conditions per place. [2023-08-30 19:05:58,412 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 706 selfloop transitions, 262 changer transitions 0/968 dead transitions. [2023-08-30 19:05:58,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 968 transitions, 33248 flow [2023-08-30 19:05:58,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:05:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:05:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2245 transitions. [2023-08-30 19:05:58,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597183620529926 [2023-08-30 19:05:58,414 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2245 transitions. [2023-08-30 19:05:58,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2245 transitions. [2023-08-30 19:05:58,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:05:58,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2245 transitions. [2023-08-30 19:05:58,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.7142857142857) internal successors, (2245), 7 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:58,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:58,418 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:05:58,418 INFO L175 Difference]: Start difference. First operand has 388 places, 835 transitions, 28711 flow. Second operand 7 states and 2245 transitions. [2023-08-30 19:05:58,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 968 transitions, 33248 flow [2023-08-30 19:06:04,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 968 transitions, 32879 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-30 19:06:04,858 INFO L231 Difference]: Finished difference. Result has 393 places, 859 transitions, 29888 flow [2023-08-30 19:06:04,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=28296, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=29888, PETRI_PLACES=393, PETRI_TRANSITIONS=859} [2023-08-30 19:06:04,859 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2023-08-30 19:06:04,859 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 859 transitions, 29888 flow [2023-08-30 19:06:04,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:04,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:06:04,859 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] [2023-08-30 19:06:04,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-08-30 19:06:04,859 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:06:04,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:06:04,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1355786162, now seen corresponding path program 35 times [2023-08-30 19:06:04,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:06:04,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854022486] [2023-08-30 19:06:04,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:06:04,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:06:04,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:06:05,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:06:05,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:06:05,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854022486] [2023-08-30 19:06:05,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854022486] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 19:06:05,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183338665] [2023-08-30 19:06:05,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 19:06:05,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:06:05,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:06:05,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 19:06:05,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 19:06:05,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 19:06:05,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 19:06:05,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 19:06:05,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:06:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:06:05,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 19:06:05,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:06:05,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183338665] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 19:06:05,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 19:06:05,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-08-30 19:06:05,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146209277] [2023-08-30 19:06:05,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:06:05,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:06:05,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:06:05,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:06:05,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-08-30 19:06:06,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 771 [2023-08-30 19:06:06,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 859 transitions, 29888 flow. Second operand has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:06,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:06:06,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 771 [2023-08-30 19:06:06,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:06:12,739 INFO L130 PetriNetUnfolder]: 9310/17150 cut-off events. [2023-08-30 19:06:12,739 INFO L131 PetriNetUnfolder]: For 650631/650631 co-relation queries the response was YES. [2023-08-30 19:06:12,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151523 conditions, 17150 events. 9310/17150 cut-off events. For 650631/650631 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 147813 event pairs, 3934 based on Foata normal form. 8/17158 useless extension candidates. Maximal degree in co-relation 151383. Up to 13370 conditions per place. [2023-08-30 19:06:12,934 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 692 selfloop transitions, 238 changer transitions 0/930 dead transitions. [2023-08-30 19:06:12,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 930 transitions, 32545 flow [2023-08-30 19:06:12,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:06:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:06:12,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2248 transitions. [2023-08-30 19:06:12,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165277005743932 [2023-08-30 19:06:12,935 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2248 transitions. [2023-08-30 19:06:12,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2248 transitions. [2023-08-30 19:06:12,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:06:12,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2248 transitions. [2023-08-30 19:06:12,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.14285714285717) internal successors, (2248), 7 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:12,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:12,939 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:12,939 INFO L175 Difference]: Start difference. First operand has 393 places, 859 transitions, 29888 flow. Second operand 7 states and 2248 transitions. [2023-08-30 19:06:12,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 930 transitions, 32545 flow [2023-08-30 19:06:18,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 930 transitions, 32274 flow, removed 32 selfloop flow, removed 2 redundant places. [2023-08-30 19:06:18,963 INFO L231 Difference]: Finished difference. Result has 399 places, 872 transitions, 30500 flow [2023-08-30 19:06:18,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=29619, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=859, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30500, PETRI_PLACES=399, PETRI_TRANSITIONS=872} [2023-08-30 19:06:18,964 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2023-08-30 19:06:18,964 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 872 transitions, 30500 flow [2023-08-30 19:06:18,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 311.14285714285717) internal successors, (2178), 7 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:18,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:06:18,965 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] [2023-08-30 19:06:18,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 19:06:19,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-08-30 19:06:19,174 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:06:19,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:06:19,174 INFO L85 PathProgramCache]: Analyzing trace with hash 2100689833, now seen corresponding path program 34 times [2023-08-30 19:06:19,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:06:19,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079375254] [2023-08-30 19:06:19,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:06:19,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:06:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:06:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:06:19,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:06:19,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079375254] [2023-08-30 19:06:19,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079375254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:06:19,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:06:19,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:06:19,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278785253] [2023-08-30 19:06:19,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:06:19,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:06:19,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:06:19,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:06:19,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:06:19,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 771 [2023-08-30 19:06:19,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 872 transitions, 30500 flow. Second operand has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:19,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:06:19,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 771 [2023-08-30 19:06:19,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:06:26,221 INFO L130 PetriNetUnfolder]: 9359/17219 cut-off events. [2023-08-30 19:06:26,221 INFO L131 PetriNetUnfolder]: For 649363/649363 co-relation queries the response was YES. [2023-08-30 19:06:26,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152449 conditions, 17219 events. 9359/17219 cut-off events. For 649363/649363 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 148189 event pairs, 2406 based on Foata normal form. 10/17229 useless extension candidates. Maximal degree in co-relation 152307. Up to 7845 conditions per place. [2023-08-30 19:06:26,424 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 675 selfloop transitions, 293 changer transitions 0/968 dead transitions. [2023-08-30 19:06:26,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 968 transitions, 34036 flow [2023-08-30 19:06:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:06:26,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:06:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2249 transitions. [2023-08-30 19:06:26,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4167129886974245 [2023-08-30 19:06:26,426 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2249 transitions. [2023-08-30 19:06:26,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2249 transitions. [2023-08-30 19:06:26,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:06:26,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2249 transitions. [2023-08-30 19:06:26,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.2857142857143) internal successors, (2249), 7 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:26,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:26,430 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:26,430 INFO L175 Difference]: Start difference. First operand has 399 places, 872 transitions, 30500 flow. Second operand 7 states and 2249 transitions. [2023-08-30 19:06:26,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 968 transitions, 34036 flow [2023-08-30 19:06:32,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 968 transitions, 33440 flow, removed 39 selfloop flow, removed 4 redundant places. [2023-08-30 19:06:32,818 INFO L231 Difference]: Finished difference. Result has 402 places, 889 transitions, 31149 flow [2023-08-30 19:06:32,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=29829, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31149, PETRI_PLACES=402, PETRI_TRANSITIONS=889} [2023-08-30 19:06:32,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2023-08-30 19:06:32,819 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 889 transitions, 31149 flow [2023-08-30 19:06:32,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:32,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:06:32,820 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] [2023-08-30 19:06:32,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-08-30 19:06:32,820 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:06:32,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:06:32,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1249926018, now seen corresponding path program 36 times [2023-08-30 19:06:32,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:06:32,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114009647] [2023-08-30 19:06:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:06:32,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:06:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:06:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:06:33,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:06:33,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114009647] [2023-08-30 19:06:33,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114009647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:06:33,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:06:33,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:06:33,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886526728] [2023-08-30 19:06:33,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:06:33,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:06:33,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:06:33,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:06:33,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:06:33,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:06:33,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 889 transitions, 31149 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:33,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:06:33,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:06:33,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:06:40,480 INFO L130 PetriNetUnfolder]: 9365/17233 cut-off events. [2023-08-30 19:06:40,480 INFO L131 PetriNetUnfolder]: For 664120/664120 co-relation queries the response was YES. [2023-08-30 19:06:40,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152788 conditions, 17233 events. 9365/17233 cut-off events. For 664120/664120 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 149184 event pairs, 1724 based on Foata normal form. 12/17245 useless extension candidates. Maximal degree in co-relation 152647. Up to 7166 conditions per place. [2023-08-30 19:06:40,691 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 709 selfloop transitions, 298 changer transitions 1/1008 dead transitions. [2023-08-30 19:06:40,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1008 transitions, 34587 flow [2023-08-30 19:06:40,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 19:06:40,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 19:06:40,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3185 transitions. [2023-08-30 19:06:40,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41309987029831385 [2023-08-30 19:06:40,693 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3185 transitions. [2023-08-30 19:06:40,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3185 transitions. [2023-08-30 19:06:40,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:06:40,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3185 transitions. [2023-08-30 19:06:40,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 318.5) internal successors, (3185), 10 states have internal predecessors, (3185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:40,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:40,699 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:40,699 INFO L175 Difference]: Start difference. First operand has 402 places, 889 transitions, 31149 flow. Second operand 10 states and 3185 transitions. [2023-08-30 19:06:40,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1008 transitions, 34587 flow [2023-08-30 19:06:47,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 1008 transitions, 33977 flow, removed 35 selfloop flow, removed 5 redundant places. [2023-08-30 19:06:47,711 INFO L231 Difference]: Finished difference. Result has 408 places, 898 transitions, 31364 flow [2023-08-30 19:06:47,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=30502, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31364, PETRI_PLACES=408, PETRI_TRANSITIONS=898} [2023-08-30 19:06:47,711 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2023-08-30 19:06:47,712 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 898 transitions, 31364 flow [2023-08-30 19:06:47,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:47,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:06:47,712 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] [2023-08-30 19:06:47,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-08-30 19:06:47,712 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:06:47,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:06:47,712 INFO L85 PathProgramCache]: Analyzing trace with hash 452672000, now seen corresponding path program 37 times [2023-08-30 19:06:47,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:06:47,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627930878] [2023-08-30 19:06:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:06:47,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:06:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:06:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:06:47,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:06:47,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627930878] [2023-08-30 19:06:47,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627930878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:06:47,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:06:47,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:06:47,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485965968] [2023-08-30 19:06:47,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:06:47,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:06:47,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:06:47,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:06:47,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:06:48,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:06:48,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 898 transitions, 31364 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:48,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:06:48,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:06:48,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:06:54,979 INFO L130 PetriNetUnfolder]: 9348/17196 cut-off events. [2023-08-30 19:06:54,979 INFO L131 PetriNetUnfolder]: For 672418/672418 co-relation queries the response was YES. [2023-08-30 19:06:55,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154706 conditions, 17196 events. 9348/17196 cut-off events. For 672418/672418 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 148024 event pairs, 3899 based on Foata normal form. 6/17202 useless extension candidates. Maximal degree in co-relation 154564. Up to 13439 conditions per place. [2023-08-30 19:06:55,355 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 719 selfloop transitions, 238 changer transitions 9/966 dead transitions. [2023-08-30 19:06:55,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 966 transitions, 34001 flow [2023-08-30 19:06:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:06:55,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:06:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2241 transitions. [2023-08-30 19:06:55,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415230683713174 [2023-08-30 19:06:55,357 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2241 transitions. [2023-08-30 19:06:55,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2241 transitions. [2023-08-30 19:06:55,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:06:55,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2241 transitions. [2023-08-30 19:06:55,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.14285714285717) internal successors, (2241), 7 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:55,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:55,361 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:06:55,361 INFO L175 Difference]: Start difference. First operand has 408 places, 898 transitions, 31364 flow. Second operand 7 states and 2241 transitions. [2023-08-30 19:06:55,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 966 transitions, 34001 flow [2023-08-30 19:07:01,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 966 transitions, 33899 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-30 19:07:01,283 INFO L231 Difference]: Finished difference. Result has 414 places, 900 transitions, 31781 flow [2023-08-30 19:07:01,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31218, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31781, PETRI_PLACES=414, PETRI_TRANSITIONS=900} [2023-08-30 19:07:01,283 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2023-08-30 19:07:01,284 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 900 transitions, 31781 flow [2023-08-30 19:07:01,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:01,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:07:01,284 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] [2023-08-30 19:07:01,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-08-30 19:07:01,284 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:07:01,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:07:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1535935923, now seen corresponding path program 35 times [2023-08-30 19:07:01,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:07:01,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297639355] [2023-08-30 19:07:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:07:01,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:07:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:07:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:07:01,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:07:01,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297639355] [2023-08-30 19:07:01,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297639355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:07:01,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:07:01,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:07:01,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868130317] [2023-08-30 19:07:01,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:07:01,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:07:01,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:07:01,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:07:01,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:07:01,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 771 [2023-08-30 19:07:01,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 900 transitions, 31781 flow. Second operand has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:01,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:07:01,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 771 [2023-08-30 19:07:01,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:07:08,593 INFO L130 PetriNetUnfolder]: 9330/17152 cut-off events. [2023-08-30 19:07:08,593 INFO L131 PetriNetUnfolder]: For 667098/667098 co-relation queries the response was YES. [2023-08-30 19:07:08,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155330 conditions, 17152 events. 9330/17152 cut-off events. For 667098/667098 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 147324 event pairs, 2388 based on Foata normal form. 4/17156 useless extension candidates. Maximal degree in co-relation 155186. Up to 7804 conditions per place. [2023-08-30 19:07:08,810 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 678 selfloop transitions, 291 changer transitions 4/973 dead transitions. [2023-08-30 19:07:08,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 973 transitions, 34697 flow [2023-08-30 19:07:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:07:08,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:07:08,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2242 transitions. [2023-08-30 19:07:08,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4154159718362053 [2023-08-30 19:07:08,812 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2242 transitions. [2023-08-30 19:07:08,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2242 transitions. [2023-08-30 19:07:08,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:07:08,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2242 transitions. [2023-08-30 19:07:08,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.2857142857143) internal successors, (2242), 7 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:08,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:08,816 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:08,816 INFO L175 Difference]: Start difference. First operand has 414 places, 900 transitions, 31781 flow. Second operand 7 states and 2242 transitions. [2023-08-30 19:07:08,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 973 transitions, 34697 flow [2023-08-30 19:07:15,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 973 transitions, 34277 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-08-30 19:07:15,118 INFO L231 Difference]: Finished difference. Result has 417 places, 898 transitions, 31874 flow [2023-08-30 19:07:15,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31333, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31874, PETRI_PLACES=417, PETRI_TRANSITIONS=898} [2023-08-30 19:07:15,119 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2023-08-30 19:07:15,119 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 898 transitions, 31874 flow [2023-08-30 19:07:15,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:15,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:07:15,119 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] [2023-08-30 19:07:15,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-08-30 19:07:15,120 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:07:15,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:07:15,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1051359184, now seen corresponding path program 38 times [2023-08-30 19:07:15,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:07:15,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516321661] [2023-08-30 19:07:15,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:07:15,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:07:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:07:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:07:15,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:07:15,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516321661] [2023-08-30 19:07:15,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516321661] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:07:15,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:07:15,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:07:15,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410249006] [2023-08-30 19:07:15,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:07:15,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:07:15,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:07:15,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:07:15,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:07:15,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:07:15,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 898 transitions, 31874 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:15,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:07:15,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:07:15,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:07:22,812 INFO L130 PetriNetUnfolder]: 9295/17085 cut-off events. [2023-08-30 19:07:22,812 INFO L131 PetriNetUnfolder]: For 681570/681570 co-relation queries the response was YES. [2023-08-30 19:07:22,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155216 conditions, 17085 events. 9295/17085 cut-off events. For 681570/681570 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 146769 event pairs, 3959 based on Foata normal form. 12/17097 useless extension candidates. Maximal degree in co-relation 155072. Up to 13417 conditions per place. [2023-08-30 19:07:23,002 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 709 selfloop transitions, 245 changer transitions 1/955 dead transitions. [2023-08-30 19:07:23,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 955 transitions, 34300 flow [2023-08-30 19:07:23,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:07:23,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:07:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2244 transitions. [2023-08-30 19:07:23,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578654808226795 [2023-08-30 19:07:23,004 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2244 transitions. [2023-08-30 19:07:23,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2244 transitions. [2023-08-30 19:07:23,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:07:23,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2244 transitions. [2023-08-30 19:07:23,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.57142857142856) internal successors, (2244), 7 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:23,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:23,008 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:23,008 INFO L175 Difference]: Start difference. First operand has 417 places, 898 transitions, 31874 flow. Second operand 7 states and 2244 transitions. [2023-08-30 19:07:23,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 955 transitions, 34300 flow [2023-08-30 19:07:28,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 955 transitions, 33810 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 19:07:28,954 INFO L231 Difference]: Finished difference. Result has 418 places, 900 transitions, 31925 flow [2023-08-30 19:07:28,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31343, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31925, PETRI_PLACES=418, PETRI_TRANSITIONS=900} [2023-08-30 19:07:28,955 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2023-08-30 19:07:28,955 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 900 transitions, 31925 flow [2023-08-30 19:07:28,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:28,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:07:28,956 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] [2023-08-30 19:07:28,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-08-30 19:07:28,956 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:07:28,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:07:28,956 INFO L85 PathProgramCache]: Analyzing trace with hash 803032932, now seen corresponding path program 39 times [2023-08-30 19:07:28,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:07:28,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895212741] [2023-08-30 19:07:28,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:07:28,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:07:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:07:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:07:29,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:07:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895212741] [2023-08-30 19:07:29,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895212741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:07:29,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:07:29,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:07:29,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013966876] [2023-08-30 19:07:29,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:07:29,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:07:29,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:07:29,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:07:29,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:07:29,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:07:29,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 900 transitions, 31925 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:29,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:07:29,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:07:29,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:07:36,755 INFO L130 PetriNetUnfolder]: 9286/17066 cut-off events. [2023-08-30 19:07:36,755 INFO L131 PetriNetUnfolder]: For 681619/681619 co-relation queries the response was YES. [2023-08-30 19:07:36,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155098 conditions, 17066 events. 9286/17066 cut-off events. For 681619/681619 co-relation queries the response was YES. Maximal size of possible extension queue 1102. Compared 146419 event pairs, 3941 based on Foata normal form. 4/17070 useless extension candidates. Maximal degree in co-relation 154952. Up to 13417 conditions per place. [2023-08-30 19:07:36,951 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 703 selfloop transitions, 246 changer transitions 0/949 dead transitions. [2023-08-30 19:07:36,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 949 transitions, 34223 flow [2023-08-30 19:07:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:07:36,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:07:36,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2256 transitions. [2023-08-30 19:07:36,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180100055586437 [2023-08-30 19:07:36,953 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2256 transitions. [2023-08-30 19:07:36,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2256 transitions. [2023-08-30 19:07:36,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:07:36,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2256 transitions. [2023-08-30 19:07:36,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.2857142857143) internal successors, (2256), 7 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:36,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:36,959 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:36,959 INFO L175 Difference]: Start difference. First operand has 418 places, 900 transitions, 31925 flow. Second operand 7 states and 2256 transitions. [2023-08-30 19:07:36,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 949 transitions, 34223 flow [2023-08-30 19:07:42,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 949 transitions, 33543 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-30 19:07:42,850 INFO L231 Difference]: Finished difference. Result has 420 places, 899 transitions, 31738 flow [2023-08-30 19:07:42,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31197, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31738, PETRI_PLACES=420, PETRI_TRANSITIONS=899} [2023-08-30 19:07:42,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2023-08-30 19:07:42,851 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 899 transitions, 31738 flow [2023-08-30 19:07:42,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:42,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:07:42,852 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] [2023-08-30 19:07:42,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-08-30 19:07:42,852 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:07:42,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:07:42,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1018710692, now seen corresponding path program 40 times [2023-08-30 19:07:42,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:07:42,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847017608] [2023-08-30 19:07:42,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:07:42,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:07:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:07:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:07:43,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:07:43,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847017608] [2023-08-30 19:07:43,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847017608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:07:43,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:07:43,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 19:07:43,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366163956] [2023-08-30 19:07:43,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:07:43,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:07:43,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:07:43,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:07:43,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:07:43,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 771 [2023-08-30 19:07:43,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 899 transitions, 31738 flow. Second operand has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:43,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:07:43,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 771 [2023-08-30 19:07:43,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:07:50,205 INFO L130 PetriNetUnfolder]: 9262/17014 cut-off events. [2023-08-30 19:07:50,205 INFO L131 PetriNetUnfolder]: For 671050/671050 co-relation queries the response was YES. [2023-08-30 19:07:50,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154612 conditions, 17014 events. 9262/17014 cut-off events. For 671050/671050 co-relation queries the response was YES. Maximal size of possible extension queue 1098. Compared 146080 event pairs, 3865 based on Foata normal form. 4/17018 useless extension candidates. Maximal degree in co-relation 154466. Up to 13417 conditions per place. [2023-08-30 19:07:50,408 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 722 selfloop transitions, 238 changer transitions 0/960 dead transitions. [2023-08-30 19:07:50,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 960 transitions, 34139 flow [2023-08-30 19:07:50,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:07:50,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:07:50,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2248 transitions. [2023-08-30 19:07:50,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165277005743932 [2023-08-30 19:07:50,410 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2248 transitions. [2023-08-30 19:07:50,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2248 transitions. [2023-08-30 19:07:50,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:07:50,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2248 transitions. [2023-08-30 19:07:50,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.14285714285717) internal successors, (2248), 7 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:50,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:50,414 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:50,414 INFO L175 Difference]: Start difference. First operand has 420 places, 899 transitions, 31738 flow. Second operand 7 states and 2248 transitions. [2023-08-30 19:07:50,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 960 transitions, 34139 flow [2023-08-30 19:07:56,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 960 transitions, 33687 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 19:07:56,500 INFO L231 Difference]: Finished difference. Result has 423 places, 897 transitions, 31702 flow [2023-08-30 19:07:56,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31226, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31702, PETRI_PLACES=423, PETRI_TRANSITIONS=897} [2023-08-30 19:07:56,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2023-08-30 19:07:56,501 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 897 transitions, 31702 flow [2023-08-30 19:07:56,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 311.75) internal successors, (2494), 8 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:56,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:07:56,501 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] [2023-08-30 19:07:56,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-08-30 19:07:56,502 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:07:56,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:07:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1059464510, now seen corresponding path program 41 times [2023-08-30 19:07:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:07:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204012256] [2023-08-30 19:07:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:07:56,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:07:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:07:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:07:56,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:07:56,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204012256] [2023-08-30 19:07:56,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204012256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:07:56,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:07:56,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:07:56,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42970304] [2023-08-30 19:07:56,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:07:56,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:07:56,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:07:56,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:07:56,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:07:56,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:07:56,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 897 transitions, 31702 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:07:56,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:07:56,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:07:56,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:08:03,880 INFO L130 PetriNetUnfolder]: 9246/16984 cut-off events. [2023-08-30 19:08:03,881 INFO L131 PetriNetUnfolder]: For 671428/671428 co-relation queries the response was YES. [2023-08-30 19:08:04,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154519 conditions, 16984 events. 9246/16984 cut-off events. For 671428/671428 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 145768 event pairs, 3863 based on Foata normal form. 6/16990 useless extension candidates. Maximal degree in co-relation 154373. Up to 13417 conditions per place. [2023-08-30 19:08:04,226 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 710 selfloop transitions, 236 changer transitions 6/952 dead transitions. [2023-08-30 19:08:04,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 952 transitions, 34067 flow [2023-08-30 19:08:04,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:08:04,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:08:04,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2254 transitions. [2023-08-30 19:08:04,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176394293125811 [2023-08-30 19:08:04,228 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2254 transitions. [2023-08-30 19:08:04,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2254 transitions. [2023-08-30 19:08:04,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:08:04,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2254 transitions. [2023-08-30 19:08:04,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:04,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:04,233 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:04,233 INFO L175 Difference]: Start difference. First operand has 423 places, 897 transitions, 31702 flow. Second operand 7 states and 2254 transitions. [2023-08-30 19:08:04,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 952 transitions, 34067 flow [2023-08-30 19:08:10,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 952 transitions, 33614 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 19:08:10,241 INFO L231 Difference]: Finished difference. Result has 426 places, 895 transitions, 31646 flow [2023-08-30 19:08:10,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31206, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31646, PETRI_PLACES=426, PETRI_TRANSITIONS=895} [2023-08-30 19:08:10,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2023-08-30 19:08:10,242 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 895 transitions, 31646 flow [2023-08-30 19:08:10,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:10,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:08:10,243 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] [2023-08-30 19:08:10,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-08-30 19:08:10,243 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:08:10,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:08:10,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1803329933, now seen corresponding path program 36 times [2023-08-30 19:08:10,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:08:10,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700565090] [2023-08-30 19:08:10,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:08:10,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:08:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:08:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:08:10,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:08:10,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700565090] [2023-08-30 19:08:10,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700565090] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:08:10,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:08:10,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:08:10,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580740598] [2023-08-30 19:08:10,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:08:10,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:08:10,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:08:10,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:08:10,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:08:10,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:08:10,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 895 transitions, 31646 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:10,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:08:10,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:08:10,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:08:17,470 INFO L130 PetriNetUnfolder]: 9201/16809 cut-off events. [2023-08-30 19:08:17,470 INFO L131 PetriNetUnfolder]: For 664842/664842 co-relation queries the response was YES. [2023-08-30 19:08:17,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153418 conditions, 16809 events. 9201/16809 cut-off events. For 664842/664842 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 142781 event pairs, 2226 based on Foata normal form. 22/16831 useless extension candidates. Maximal degree in co-relation 153272. Up to 8427 conditions per place. [2023-08-30 19:08:17,672 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 713 selfloop transitions, 289 changer transitions 0/1002 dead transitions. [2023-08-30 19:08:17,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1002 transitions, 35250 flow [2023-08-30 19:08:17,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:08:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:08:17,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2239 transitions. [2023-08-30 19:08:17,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148601074671114 [2023-08-30 19:08:17,674 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2239 transitions. [2023-08-30 19:08:17,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2239 transitions. [2023-08-30 19:08:17,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:08:17,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2239 transitions. [2023-08-30 19:08:17,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 319.85714285714283) internal successors, (2239), 7 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:17,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:17,678 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:17,678 INFO L175 Difference]: Start difference. First operand has 426 places, 895 transitions, 31646 flow. Second operand 7 states and 2239 transitions. [2023-08-30 19:08:17,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 1002 transitions, 35250 flow [2023-08-30 19:08:23,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 1002 transitions, 34762 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 19:08:23,841 INFO L231 Difference]: Finished difference. Result has 428 places, 900 transitions, 32194 flow [2023-08-30 19:08:23,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=30962, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=889, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32194, PETRI_PLACES=428, PETRI_TRANSITIONS=900} [2023-08-30 19:08:23,842 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2023-08-30 19:08:23,842 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 900 transitions, 32194 flow [2023-08-30 19:08:23,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:23,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:08:23,843 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] [2023-08-30 19:08:23,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-08-30 19:08:23,843 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:08:23,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:08:23,844 INFO L85 PathProgramCache]: Analyzing trace with hash -170138933, now seen corresponding path program 37 times [2023-08-30 19:08:23,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:08:23,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269777729] [2023-08-30 19:08:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:08:23,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:08:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:08:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:08:24,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:08:24,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269777729] [2023-08-30 19:08:24,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269777729] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:08:24,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:08:24,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:08:24,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712505193] [2023-08-30 19:08:24,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:08:24,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:08:24,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:08:24,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:08:24,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:08:24,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:08:24,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 900 transitions, 32194 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:24,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:08:24,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:08:24,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:08:31,496 INFO L130 PetriNetUnfolder]: 9418/17218 cut-off events. [2023-08-30 19:08:31,496 INFO L131 PetriNetUnfolder]: For 698901/698901 co-relation queries the response was YES. [2023-08-30 19:08:31,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158761 conditions, 17218 events. 9418/17218 cut-off events. For 698901/698901 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 147399 event pairs, 1828 based on Foata normal form. 12/17230 useless extension candidates. Maximal degree in co-relation 158613. Up to 6237 conditions per place. [2023-08-30 19:08:31,732 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 673 selfloop transitions, 383 changer transitions 0/1056 dead transitions. [2023-08-30 19:08:31,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 1056 transitions, 37704 flow [2023-08-30 19:08:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:08:31,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:08:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2239 transitions. [2023-08-30 19:08:31,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148601074671114 [2023-08-30 19:08:31,733 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2239 transitions. [2023-08-30 19:08:31,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2239 transitions. [2023-08-30 19:08:31,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:08:31,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2239 transitions. [2023-08-30 19:08:31,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 319.85714285714283) internal successors, (2239), 7 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:31,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:31,737 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:31,737 INFO L175 Difference]: Start difference. First operand has 428 places, 900 transitions, 32194 flow. Second operand 7 states and 2239 transitions. [2023-08-30 19:08:31,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 1056 transitions, 37704 flow [2023-08-30 19:08:38,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 1056 transitions, 36992 flow, removed 146 selfloop flow, removed 3 redundant places. [2023-08-30 19:08:38,503 INFO L231 Difference]: Finished difference. Result has 434 places, 928 transitions, 33793 flow [2023-08-30 19:08:38,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31626, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33793, PETRI_PLACES=434, PETRI_TRANSITIONS=928} [2023-08-30 19:08:38,505 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2023-08-30 19:08:38,505 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 928 transitions, 33793 flow [2023-08-30 19:08:38,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:38,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:08:38,506 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] [2023-08-30 19:08:38,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-08-30 19:08:38,506 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:08:38,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:08:38,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1784353919, now seen corresponding path program 38 times [2023-08-30 19:08:38,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:08:38,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260523589] [2023-08-30 19:08:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:08:38,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:08:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:08:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:08:38,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:08:38,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260523589] [2023-08-30 19:08:38,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260523589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:08:38,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:08:38,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:08:38,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547698929] [2023-08-30 19:08:38,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:08:38,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:08:38,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:08:38,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:08:38,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:08:39,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:08:39,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 928 transitions, 33793 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:39,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:08:39,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:08:39,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:08:46,512 INFO L130 PetriNetUnfolder]: 9326/16990 cut-off events. [2023-08-30 19:08:46,513 INFO L131 PetriNetUnfolder]: For 704711/704711 co-relation queries the response was YES. [2023-08-30 19:08:46,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157640 conditions, 16990 events. 9326/16990 cut-off events. For 704711/704711 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 144047 event pairs, 2266 based on Foata normal form. 64/17054 useless extension candidates. Maximal degree in co-relation 157489. Up to 7778 conditions per place. [2023-08-30 19:08:46,752 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 724 selfloop transitions, 304 changer transitions 0/1028 dead transitions. [2023-08-30 19:08:46,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1028 transitions, 37326 flow [2023-08-30 19:08:46,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:08:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:08:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2264 transitions. [2023-08-30 19:08:46,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194923105428942 [2023-08-30 19:08:46,754 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2264 transitions. [2023-08-30 19:08:46,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2264 transitions. [2023-08-30 19:08:46,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:08:46,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2264 transitions. [2023-08-30 19:08:46,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.42857142857144) internal successors, (2264), 7 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:46,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:46,758 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:46,758 INFO L175 Difference]: Start difference. First operand has 434 places, 928 transitions, 33793 flow. Second operand 7 states and 2264 transitions. [2023-08-30 19:08:46,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1028 transitions, 37326 flow [2023-08-30 19:08:53,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1028 transitions, 36655 flow, removed 50 selfloop flow, removed 4 redundant places. [2023-08-30 19:08:53,786 INFO L231 Difference]: Finished difference. Result has 437 places, 928 transitions, 33795 flow [2023-08-30 19:08:53,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=32965, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33795, PETRI_PLACES=437, PETRI_TRANSITIONS=928} [2023-08-30 19:08:53,787 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2023-08-30 19:08:53,787 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 928 transitions, 33795 flow [2023-08-30 19:08:53,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:53,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:08:53,787 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] [2023-08-30 19:08:53,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-08-30 19:08:53,788 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:08:53,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:08:53,788 INFO L85 PathProgramCache]: Analyzing trace with hash 569817878, now seen corresponding path program 42 times [2023-08-30 19:08:53,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:08:53,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175735095] [2023-08-30 19:08:53,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:08:53,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:08:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:08:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:08:54,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:08:54,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175735095] [2023-08-30 19:08:54,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175735095] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:08:54,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:08:54,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:08:54,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520920637] [2023-08-30 19:08:54,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:08:54,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:08:54,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:08:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:08:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:08:54,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:08:54,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 928 transitions, 33795 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:08:54,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:08:54,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:08:54,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:09:01,588 INFO L130 PetriNetUnfolder]: 9702/17682 cut-off events. [2023-08-30 19:09:01,588 INFO L131 PetriNetUnfolder]: For 720005/720005 co-relation queries the response was YES. [2023-08-30 19:09:01,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162442 conditions, 17682 events. 9702/17682 cut-off events. For 720005/720005 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 151144 event pairs, 3934 based on Foata normal form. 8/17690 useless extension candidates. Maximal degree in co-relation 162292. Up to 13464 conditions per place. [2023-08-30 19:09:01,798 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 827 selfloop transitions, 226 changer transitions 0/1053 dead transitions. [2023-08-30 19:09:01,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1053 transitions, 38439 flow [2023-08-30 19:09:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:09:01,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:09:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2261 transitions. [2023-08-30 19:09:01,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41893644617380027 [2023-08-30 19:09:01,800 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2261 transitions. [2023-08-30 19:09:01,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2261 transitions. [2023-08-30 19:09:01,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:09:01,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2261 transitions. [2023-08-30 19:09:01,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:01,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:01,804 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:01,804 INFO L175 Difference]: Start difference. First operand has 437 places, 928 transitions, 33795 flow. Second operand 7 states and 2261 transitions. [2023-08-30 19:09:01,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1053 transitions, 38439 flow [2023-08-30 19:09:08,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1053 transitions, 38032 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 19:09:08,371 INFO L231 Difference]: Finished difference. Result has 443 places, 948 transitions, 34688 flow [2023-08-30 19:09:08,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=33420, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34688, PETRI_PLACES=443, PETRI_TRANSITIONS=948} [2023-08-30 19:09:08,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2023-08-30 19:09:08,371 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 948 transitions, 34688 flow [2023-08-30 19:09:08,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:08,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:09:08,372 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] [2023-08-30 19:09:08,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-08-30 19:09:08,372 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:09:08,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:09:08,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1553665876, now seen corresponding path program 43 times [2023-08-30 19:09:08,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:09:08,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979327100] [2023-08-30 19:09:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:09:08,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:09:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:09:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:09:08,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:09:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979327100] [2023-08-30 19:09:08,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979327100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:09:08,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:09:08,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:09:08,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346970524] [2023-08-30 19:09:08,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:09:08,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:09:08,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:09:08,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:09:08,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:09:08,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:09:08,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 948 transitions, 34688 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:08,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:09:08,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:09:08,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:09:16,500 INFO L130 PetriNetUnfolder]: 9783/18047 cut-off events. [2023-08-30 19:09:16,500 INFO L131 PetriNetUnfolder]: For 737942/737942 co-relation queries the response was YES. [2023-08-30 19:09:16,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165134 conditions, 18047 events. 9783/18047 cut-off events. For 737942/737942 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 157648 event pairs, 3812 based on Foata normal form. 12/18059 useless extension candidates. Maximal degree in co-relation 164981. Up to 13464 conditions per place. [2023-08-30 19:09:16,725 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 777 selfloop transitions, 260 changer transitions 0/1037 dead transitions. [2023-08-30 19:09:16,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1037 transitions, 38509 flow [2023-08-30 19:09:16,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:09:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:09:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2227 transitions. [2023-08-30 19:09:16,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41263664999073557 [2023-08-30 19:09:16,727 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2227 transitions. [2023-08-30 19:09:16,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2227 transitions. [2023-08-30 19:09:16,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:09:16,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2227 transitions. [2023-08-30 19:09:16,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 318.14285714285717) internal successors, (2227), 7 states have internal predecessors, (2227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:16,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:16,731 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:16,731 INFO L175 Difference]: Start difference. First operand has 443 places, 948 transitions, 34688 flow. Second operand 7 states and 2227 transitions. [2023-08-30 19:09:16,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1037 transitions, 38509 flow [2023-08-30 19:09:24,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 1037 transitions, 37991 flow, removed 53 selfloop flow, removed 3 redundant places. [2023-08-30 19:09:24,230 INFO L231 Difference]: Finished difference. Result has 450 places, 969 transitions, 35638 flow [2023-08-30 19:09:24,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=34178, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35638, PETRI_PLACES=450, PETRI_TRANSITIONS=969} [2023-08-30 19:09:24,231 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2023-08-30 19:09:24,232 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 969 transitions, 35638 flow [2023-08-30 19:09:24,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:24,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:09:24,232 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] [2023-08-30 19:09:24,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-08-30 19:09:24,233 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:09:24,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:09:24,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1404244369, now seen corresponding path program 39 times [2023-08-30 19:09:24,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:09:24,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301686831] [2023-08-30 19:09:24,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:09:24,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:09:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:09:24,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:09:24,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:09:24,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301686831] [2023-08-30 19:09:24,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301686831] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:09:24,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:09:24,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:09:24,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379157190] [2023-08-30 19:09:24,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:09:24,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:09:24,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:09:24,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:09:24,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:09:24,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:09:24,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 969 transitions, 35638 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:24,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:09:24,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:09:24,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:09:32,327 INFO L130 PetriNetUnfolder]: 9691/17819 cut-off events. [2023-08-30 19:09:32,327 INFO L131 PetriNetUnfolder]: For 752530/752530 co-relation queries the response was YES. [2023-08-30 19:09:32,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165072 conditions, 17819 events. 9691/17819 cut-off events. For 752530/752530 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 154067 event pairs, 2360 based on Foata normal form. 64/17883 useless extension candidates. Maximal degree in co-relation 164915. Up to 8561 conditions per place. [2023-08-30 19:09:32,576 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 747 selfloop transitions, 315 changer transitions 0/1062 dead transitions. [2023-08-30 19:09:32,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 1062 transitions, 38896 flow [2023-08-30 19:09:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:09:32,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:09:32,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2265 transitions. [2023-08-30 19:09:32,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4196775986659255 [2023-08-30 19:09:32,578 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2265 transitions. [2023-08-30 19:09:32,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2265 transitions. [2023-08-30 19:09:32,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:09:32,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2265 transitions. [2023-08-30 19:09:32,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.57142857142856) internal successors, (2265), 7 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:32,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:32,582 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:32,582 INFO L175 Difference]: Start difference. First operand has 450 places, 969 transitions, 35638 flow. Second operand 7 states and 2265 transitions. [2023-08-30 19:09:32,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 1062 transitions, 38896 flow [2023-08-30 19:09:40,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1062 transitions, 38437 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 19:09:40,474 INFO L231 Difference]: Finished difference. Result has 452 places, 967 transitions, 35732 flow [2023-08-30 19:09:40,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35102, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=967, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35732, PETRI_PLACES=452, PETRI_TRANSITIONS=967} [2023-08-30 19:09:40,475 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2023-08-30 19:09:40,475 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 967 transitions, 35732 flow [2023-08-30 19:09:40,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:40,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:09:40,476 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] [2023-08-30 19:09:40,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2023-08-30 19:09:40,477 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:09:40,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:09:40,477 INFO L85 PathProgramCache]: Analyzing trace with hash 251251914, now seen corresponding path program 44 times [2023-08-30 19:09:40,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:09:40,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447692560] [2023-08-30 19:09:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:09:40,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:09:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:09:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:09:40,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:09:40,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447692560] [2023-08-30 19:09:40,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447692560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:09:40,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:09:40,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:09:40,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541809430] [2023-08-30 19:09:40,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:09:40,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:09:40,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:09:40,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:09:40,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:09:40,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:09:40,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 967 transitions, 35732 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:40,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:09:40,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:09:40,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:09:48,587 INFO L130 PetriNetUnfolder]: 9680/17786 cut-off events. [2023-08-30 19:09:48,587 INFO L131 PetriNetUnfolder]: For 749678/749678 co-relation queries the response was YES. [2023-08-30 19:09:48,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165032 conditions, 17786 events. 9680/17786 cut-off events. For 749678/749678 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 153970 event pairs, 3970 based on Foata normal form. 8/17794 useless extension candidates. Maximal degree in co-relation 164875. Up to 13236 conditions per place. [2023-08-30 19:09:48,846 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 742 selfloop transitions, 271 changer transitions 0/1013 dead transitions. [2023-08-30 19:09:48,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 1013 transitions, 38078 flow [2023-08-30 19:09:48,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:09:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:09:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2254 transitions. [2023-08-30 19:09:48,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176394293125811 [2023-08-30 19:09:48,848 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2254 transitions. [2023-08-30 19:09:48,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2254 transitions. [2023-08-30 19:09:48,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:09:48,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2254 transitions. [2023-08-30 19:09:48,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.0) internal successors, (2254), 7 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:48,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:48,852 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:48,852 INFO L175 Difference]: Start difference. First operand has 452 places, 967 transitions, 35732 flow. Second operand 7 states and 2254 transitions. [2023-08-30 19:09:48,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 1013 transitions, 38078 flow [2023-08-30 19:09:56,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1013 transitions, 37529 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 19:09:56,321 INFO L231 Difference]: Finished difference. Result has 452 places, 964 transitions, 35623 flow [2023-08-30 19:09:56,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35081, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35623, PETRI_PLACES=452, PETRI_TRANSITIONS=964} [2023-08-30 19:09:56,322 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2023-08-30 19:09:56,322 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 964 transitions, 35623 flow [2023-08-30 19:09:56,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:56,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:09:56,322 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] [2023-08-30 19:09:56,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-08-30 19:09:56,322 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:09:56,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:09:56,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1180859485, now seen corresponding path program 40 times [2023-08-30 19:09:56,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:09:56,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527839883] [2023-08-30 19:09:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:09:56,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:09:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:09:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:09:56,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:09:56,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527839883] [2023-08-30 19:09:56,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527839883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:09:56,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:09:56,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:09:56,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561250761] [2023-08-30 19:09:56,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:09:56,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:09:56,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:09:56,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:09:56,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:09:56,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:09:56,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 964 transitions, 35623 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:09:56,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:09:56,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:09:56,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:10:04,931 INFO L130 PetriNetUnfolder]: 10063/18572 cut-off events. [2023-08-30 19:10:04,931 INFO L131 PetriNetUnfolder]: For 762819/762819 co-relation queries the response was YES. [2023-08-30 19:10:05,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170815 conditions, 18572 events. 10063/18572 cut-off events. For 762819/762819 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 162637 event pairs, 2256 based on Foata normal form. 58/18630 useless extension candidates. Maximal degree in co-relation 170659. Up to 11871 conditions per place. [2023-08-30 19:10:05,289 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 758 selfloop transitions, 338 changer transitions 0/1096 dead transitions. [2023-08-30 19:10:05,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1096 transitions, 40244 flow [2023-08-30 19:10:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:10:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:10:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2261 transitions. [2023-08-30 19:10:05,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41893644617380027 [2023-08-30 19:10:05,291 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2261 transitions. [2023-08-30 19:10:05,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2261 transitions. [2023-08-30 19:10:05,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:10:05,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2261 transitions. [2023-08-30 19:10:05,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:05,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:05,295 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:05,295 INFO L175 Difference]: Start difference. First operand has 452 places, 964 transitions, 35623 flow. Second operand 7 states and 2261 transitions. [2023-08-30 19:10:05,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1096 transitions, 40244 flow [2023-08-30 19:10:13,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1096 transitions, 39702 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 19:10:13,766 INFO L231 Difference]: Finished difference. Result has 456 places, 997 transitions, 37153 flow [2023-08-30 19:10:13,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35081, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37153, PETRI_PLACES=456, PETRI_TRANSITIONS=997} [2023-08-30 19:10:13,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2023-08-30 19:10:13,767 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 997 transitions, 37153 flow [2023-08-30 19:10:13,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:13,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:10:13,767 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] [2023-08-30 19:10:13,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2023-08-30 19:10:13,767 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:10:13,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:10:13,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1004924419, now seen corresponding path program 41 times [2023-08-30 19:10:13,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:10:13,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588142835] [2023-08-30 19:10:13,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:10:13,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:10:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:10:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:10:14,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:10:14,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588142835] [2023-08-30 19:10:14,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588142835] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:10:14,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:10:14,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:10:14,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620120279] [2023-08-30 19:10:14,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:10:14,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:10:14,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:10:14,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:10:14,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:10:14,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:10:14,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 997 transitions, 37153 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:14,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:10:14,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:10:14,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:10:22,628 INFO L130 PetriNetUnfolder]: 10039/18524 cut-off events. [2023-08-30 19:10:22,628 INFO L131 PetriNetUnfolder]: For 786608/786608 co-relation queries the response was YES. [2023-08-30 19:10:22,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172214 conditions, 18524 events. 10039/18524 cut-off events. For 786608/786608 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 163177 event pairs, 1386 based on Foata normal form. 12/18536 useless extension candidates. Maximal degree in co-relation 172055. Up to 12189 conditions per place. [2023-08-30 19:10:22,873 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 886 selfloop transitions, 212 changer transitions 3/1101 dead transitions. [2023-08-30 19:10:22,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1101 transitions, 41341 flow [2023-08-30 19:10:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:10:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:10:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2225 transitions. [2023-08-30 19:10:22,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41226607374467295 [2023-08-30 19:10:22,875 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2225 transitions. [2023-08-30 19:10:22,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2225 transitions. [2023-08-30 19:10:22,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:10:22,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2225 transitions. [2023-08-30 19:10:22,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 317.85714285714283) internal successors, (2225), 7 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:22,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:22,881 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:22,881 INFO L175 Difference]: Start difference. First operand has 456 places, 997 transitions, 37153 flow. Second operand 7 states and 2225 transitions. [2023-08-30 19:10:22,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1101 transitions, 41341 flow [2023-08-30 19:10:31,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1101 transitions, 40896 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-30 19:10:31,247 INFO L231 Difference]: Finished difference. Result has 462 places, 1005 transitions, 37589 flow [2023-08-30 19:10:31,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=36713, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=787, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37589, PETRI_PLACES=462, PETRI_TRANSITIONS=1005} [2023-08-30 19:10:31,248 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 432 predicate places. [2023-08-30 19:10:31,248 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1005 transitions, 37589 flow [2023-08-30 19:10:31,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:31,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:10:31,249 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] [2023-08-30 19:10:31,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2023-08-30 19:10:31,249 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:10:31,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:10:31,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1818762133, now seen corresponding path program 42 times [2023-08-30 19:10:31,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:10:31,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115736743] [2023-08-30 19:10:31,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:10:31,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:10:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:10:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:10:31,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:10:31,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115736743] [2023-08-30 19:10:31,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115736743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:10:31,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:10:31,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:10:31,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936569285] [2023-08-30 19:10:31,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:10:31,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:10:31,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:10:31,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:10:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:10:31,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:10:31,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1005 transitions, 37589 flow. Second operand has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:31,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:10:31,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:10:31,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:10:39,891 INFO L130 PetriNetUnfolder]: 10024/18463 cut-off events. [2023-08-30 19:10:39,891 INFO L131 PetriNetUnfolder]: For 801888/801888 co-relation queries the response was YES. [2023-08-30 19:10:40,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173433 conditions, 18463 events. 10024/18463 cut-off events. For 801888/801888 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 161210 event pairs, 2256 based on Foata normal form. 18/18481 useless extension candidates. Maximal degree in co-relation 173272. Up to 11823 conditions per place. [2023-08-30 19:10:40,126 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 767 selfloop transitions, 340 changer transitions 0/1107 dead transitions. [2023-08-30 19:10:40,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1107 transitions, 41291 flow [2023-08-30 19:10:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:10:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:10:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2233 transitions. [2023-08-30 19:10:40,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41374837872892345 [2023-08-30 19:10:40,128 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2233 transitions. [2023-08-30 19:10:40,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2233 transitions. [2023-08-30 19:10:40,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:10:40,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2233 transitions. [2023-08-30 19:10:40,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 319.0) internal successors, (2233), 7 states have internal predecessors, (2233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:40,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:40,132 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:40,132 INFO L175 Difference]: Start difference. First operand has 462 places, 1005 transitions, 37589 flow. Second operand 7 states and 2233 transitions. [2023-08-30 19:10:40,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1107 transitions, 41291 flow [2023-08-30 19:10:49,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1107 transitions, 40785 flow, removed 78 selfloop flow, removed 2 redundant places. [2023-08-30 19:10:49,366 INFO L231 Difference]: Finished difference. Result has 468 places, 1010 transitions, 38027 flow [2023-08-30 19:10:49,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37102, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38027, PETRI_PLACES=468, PETRI_TRANSITIONS=1010} [2023-08-30 19:10:49,367 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2023-08-30 19:10:49,367 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1010 transitions, 38027 flow [2023-08-30 19:10:49,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 310.14285714285717) internal successors, (2171), 7 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:49,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:10:49,368 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] [2023-08-30 19:10:49,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-08-30 19:10:49,368 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:10:49,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:10:49,368 INFO L85 PathProgramCache]: Analyzing trace with hash 650218813, now seen corresponding path program 43 times [2023-08-30 19:10:49,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:10:49,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966866651] [2023-08-30 19:10:49,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:10:49,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:10:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:10:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:10:49,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:10:49,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966866651] [2023-08-30 19:10:49,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966866651] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:10:49,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:10:49,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 19:10:49,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631240295] [2023-08-30 19:10:49,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:10:49,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:10:49,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:10:49,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:10:49,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:10:49,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 771 [2023-08-30 19:10:49,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1010 transitions, 38027 flow. Second operand has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 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) [2023-08-30 19:10:49,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:10:49,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 771 [2023-08-30 19:10:49,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:10:58,012 INFO L130 PetriNetUnfolder]: 9982/18314 cut-off events. [2023-08-30 19:10:58,013 INFO L131 PetriNetUnfolder]: For 807848/807848 co-relation queries the response was YES. [2023-08-30 19:10:58,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173147 conditions, 18314 events. 9982/18314 cut-off events. For 807848/807848 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 158827 event pairs, 2238 based on Foata normal form. 18/18332 useless extension candidates. Maximal degree in co-relation 172984. Up to 11823 conditions per place. [2023-08-30 19:10:58,406 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 766 selfloop transitions, 337 changer transitions 0/1103 dead transitions. [2023-08-30 19:10:58,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1103 transitions, 41393 flow [2023-08-30 19:10:58,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:10:58,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:10:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2230 transitions. [2023-08-30 19:10:58,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131925143598295 [2023-08-30 19:10:58,409 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2230 transitions. [2023-08-30 19:10:58,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2230 transitions. [2023-08-30 19:10:58,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:10:58,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2230 transitions. [2023-08-30 19:10:58,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 318.57142857142856) internal successors, (2230), 7 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:58,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:58,413 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:10:58,413 INFO L175 Difference]: Start difference. First operand has 468 places, 1010 transitions, 38027 flow. Second operand 7 states and 2230 transitions. [2023-08-30 19:10:58,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1103 transitions, 41393 flow [2023-08-30 19:11:07,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 1103 transitions, 40709 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-30 19:11:07,594 INFO L231 Difference]: Finished difference. Result has 472 places, 1010 transitions, 38183 flow [2023-08-30 19:11:07,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37315, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38183, PETRI_PLACES=472, PETRI_TRANSITIONS=1010} [2023-08-30 19:11:07,595 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 442 predicate places. [2023-08-30 19:11:07,595 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 1010 transitions, 38183 flow [2023-08-30 19:11:07,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 309.75) internal successors, (2478), 8 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) [2023-08-30 19:11:07,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:11:07,596 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] [2023-08-30 19:11:07,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2023-08-30 19:11:07,596 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:11:07,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:11:07,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1198212747, now seen corresponding path program 44 times [2023-08-30 19:11:07,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:11:07,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340074692] [2023-08-30 19:11:07,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:11:07,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:11:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:11:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:11:07,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:11:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340074692] [2023-08-30 19:11:07,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340074692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:11:07,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:11:07,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:11:07,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466313832] [2023-08-30 19:11:07,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:11:07,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:11:07,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:11:07,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:11:07,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:11:08,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:11:08,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 1010 transitions, 38183 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:08,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:11:08,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:11:08,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:11:16,347 INFO L130 PetriNetUnfolder]: 9977/18289 cut-off events. [2023-08-30 19:11:16,347 INFO L131 PetriNetUnfolder]: For 812731/812731 co-relation queries the response was YES. [2023-08-30 19:11:16,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173569 conditions, 18289 events. 9977/18289 cut-off events. For 812731/812731 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 158466 event pairs, 2494 based on Foata normal form. 4/18293 useless extension candidates. Maximal degree in co-relation 173404. Up to 8750 conditions per place. [2023-08-30 19:11:16,600 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 722 selfloop transitions, 357 changer transitions 0/1079 dead transitions. [2023-08-30 19:11:16,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1079 transitions, 41094 flow [2023-08-30 19:11:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:11:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:11:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2261 transitions. [2023-08-30 19:11:16,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41893644617380027 [2023-08-30 19:11:16,602 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2261 transitions. [2023-08-30 19:11:16,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2261 transitions. [2023-08-30 19:11:16,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:11:16,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2261 transitions. [2023-08-30 19:11:16,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:16,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:16,605 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:16,606 INFO L175 Difference]: Start difference. First operand has 472 places, 1010 transitions, 38183 flow. Second operand 7 states and 2261 transitions. [2023-08-30 19:11:16,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1079 transitions, 41094 flow [2023-08-30 19:11:26,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1079 transitions, 40599 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 19:11:26,207 INFO L231 Difference]: Finished difference. Result has 477 places, 1012 transitions, 38509 flow [2023-08-30 19:11:26,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37667, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38509, PETRI_PLACES=477, PETRI_TRANSITIONS=1012} [2023-08-30 19:11:26,209 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2023-08-30 19:11:26,209 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 1012 transitions, 38509 flow [2023-08-30 19:11:26,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:26,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:11:26,210 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] [2023-08-30 19:11:26,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2023-08-30 19:11:26,210 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:11:26,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:11:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash -816504591, now seen corresponding path program 45 times [2023-08-30 19:11:26,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:11:26,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151674010] [2023-08-30 19:11:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:11:26,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:11:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:11:26,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:11:26,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:11:26,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151674010] [2023-08-30 19:11:26,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151674010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:11:26,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:11:26,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:11:26,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495238173] [2023-08-30 19:11:26,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:11:26,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:11:26,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:11:26,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:11:26,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:11:26,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:11:26,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1012 transitions, 38509 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:26,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:11:26,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:11:26,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:11:35,057 INFO L130 PetriNetUnfolder]: 10060/18384 cut-off events. [2023-08-30 19:11:35,057 INFO L131 PetriNetUnfolder]: For 846341/846341 co-relation queries the response was YES. [2023-08-30 19:11:35,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175417 conditions, 18384 events. 10060/18384 cut-off events. For 846341/846341 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 158664 event pairs, 2508 based on Foata normal form. 26/18410 useless extension candidates. Maximal degree in co-relation 175250. Up to 8770 conditions per place. [2023-08-30 19:11:35,358 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 732 selfloop transitions, 392 changer transitions 0/1124 dead transitions. [2023-08-30 19:11:35,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 1124 transitions, 43331 flow [2023-08-30 19:11:35,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:11:35,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:11:35,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2263 transitions. [2023-08-30 19:11:35,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193070224198629 [2023-08-30 19:11:35,360 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2263 transitions. [2023-08-30 19:11:35,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2263 transitions. [2023-08-30 19:11:35,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:11:35,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2263 transitions. [2023-08-30 19:11:35,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.2857142857143) internal successors, (2263), 7 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:35,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:35,364 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:35,364 INFO L175 Difference]: Start difference. First operand has 477 places, 1012 transitions, 38509 flow. Second operand 7 states and 2263 transitions. [2023-08-30 19:11:35,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 1124 transitions, 43331 flow [2023-08-30 19:11:44,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 1124 transitions, 42761 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-30 19:11:44,973 INFO L231 Difference]: Finished difference. Result has 483 places, 1048 transitions, 40439 flow [2023-08-30 19:11:44,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37932, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1011, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40439, PETRI_PLACES=483, PETRI_TRANSITIONS=1048} [2023-08-30 19:11:44,974 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 453 predicate places. [2023-08-30 19:11:44,974 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 1048 transitions, 40439 flow [2023-08-30 19:11:44,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:44,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:11:44,975 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] [2023-08-30 19:11:44,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2023-08-30 19:11:44,975 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:11:44,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:11:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1876950500, now seen corresponding path program 45 times [2023-08-30 19:11:44,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:11:44,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191520891] [2023-08-30 19:11:44,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:11:44,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:11:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:11:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:11:45,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:11:45,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191520891] [2023-08-30 19:11:45,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191520891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:11:45,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:11:45,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:11:45,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933987535] [2023-08-30 19:11:45,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:11:45,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:11:45,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:11:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:11:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:11:45,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:11:45,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 1048 transitions, 40439 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:45,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:11:45,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:11:45,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:11:54,311 INFO L130 PetriNetUnfolder]: 10016/18282 cut-off events. [2023-08-30 19:11:54,311 INFO L131 PetriNetUnfolder]: For 863424/863424 co-relation queries the response was YES. [2023-08-30 19:11:54,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176163 conditions, 18282 events. 10016/18282 cut-off events. For 863424/863424 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 157772 event pairs, 4057 based on Foata normal form. 16/18298 useless extension candidates. Maximal degree in co-relation 175993. Up to 13839 conditions per place. [2023-08-30 19:11:54,562 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 837 selfloop transitions, 269 changer transitions 0/1106 dead transitions. [2023-08-30 19:11:54,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1106 transitions, 43118 flow [2023-08-30 19:11:54,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:11:54,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:11:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2269 transitions. [2023-08-30 19:11:54,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4204187511580508 [2023-08-30 19:11:54,564 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2269 transitions. [2023-08-30 19:11:54,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2269 transitions. [2023-08-30 19:11:54,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:11:54,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2269 transitions. [2023-08-30 19:11:54,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.14285714285717) internal successors, (2269), 7 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:54,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:54,568 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:11:54,568 INFO L175 Difference]: Start difference. First operand has 483 places, 1048 transitions, 40439 flow. Second operand 7 states and 2269 transitions. [2023-08-30 19:11:54,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1106 transitions, 43118 flow [2023-08-30 19:12:03,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1106 transitions, 42762 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-08-30 19:12:03,779 INFO L231 Difference]: Finished difference. Result has 488 places, 1050 transitions, 40692 flow [2023-08-30 19:12:03,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40083, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40692, PETRI_PLACES=488, PETRI_TRANSITIONS=1050} [2023-08-30 19:12:03,780 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 458 predicate places. [2023-08-30 19:12:03,780 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 1050 transitions, 40692 flow [2023-08-30 19:12:03,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:03,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:12:03,781 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] [2023-08-30 19:12:03,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2023-08-30 19:12:03,781 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:12:03,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:12:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1666416104, now seen corresponding path program 46 times [2023-08-30 19:12:03,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:12:03,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629368808] [2023-08-30 19:12:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:12:03,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:12:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:12:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 19:12:04,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:12:04,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629368808] [2023-08-30 19:12:04,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629368808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:12:04,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:12:04,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:12:04,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899328978] [2023-08-30 19:12:04,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:12:04,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:12:04,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:12:04,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:12:04,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:12:04,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 771 [2023-08-30 19:12:04,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1050 transitions, 40692 flow. Second operand has 7 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:12:04,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:12:04,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 771 [2023-08-30 19:12:04,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15