./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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 ../sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i -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 3937112f59473340c79cc2d7ab59a9fe9e4faa83d54303e5490f5452d86b21aa --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:19:28,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:19:28,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:19:28,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:19:28,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:19:28,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:19:28,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:19:28,413 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:19:28,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:19:28,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:19:28,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:19:28,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:19:28,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:19:28,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:19:28,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:19:28,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:19:28,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:19:28,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:19:28,431 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:19:28,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:19:28,436 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:19:28,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:19:28,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:19:28,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:19:28,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:19:28,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:19:28,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:19:28,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:19:28,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:19:28,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:19:28,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:19:28,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:19:28,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:19:28,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:19:28,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:19:28,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:19:28,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:19:28,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:19:28,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:19:28,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:19:28,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:19:28,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:19:28,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:19:28,484 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:19:28,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:19:28,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:19:28,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:19:28,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:19:28,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:19:28,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:19:28,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:19:28,487 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:19:28,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:19:28,488 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:19:28,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:19:28,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:19:28,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:19:28,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:19:28,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:19:28,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:19:28,489 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:19:28,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:19:28,490 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:19:28,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:19:28,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:19:28,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:19:28,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:19:28,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:19:28,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:19:28,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:19:28,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:19:28,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:19:28,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:19:28,492 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:19:28,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:19:28,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:19:28,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3937112f59473340c79cc2d7ab59a9fe9e4faa83d54303e5490f5452d86b21aa [2022-07-22 21:19:28,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:19:28,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:19:28,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:19:28,714 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:19:28,715 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:19:28,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i [2022-07-22 21:19:28,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4729386d0/6736339517db41a694297742f46237ae/FLAG62733f796 [2022-07-22 21:19:29,149 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:19:29,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i [2022-07-22 21:19:29,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4729386d0/6736339517db41a694297742f46237ae/FLAG62733f796 [2022-07-22 21:19:29,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4729386d0/6736339517db41a694297742f46237ae [2022-07-22 21:19:29,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:19:29,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:19:29,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:19:29,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:19:29,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:19:29,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:19:29" (1/1) ... [2022-07-22 21:19:29,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60c463de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29, skipping insertion in model container [2022-07-22 21:19:29,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:19:29" (1/1) ... [2022-07-22 21:19:29,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:19:29,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:19:29,469 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i[30807,30820] [2022-07-22 21:19:29,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:19:29,483 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:19:29,517 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/33_double_lock_p1_vs.i[30807,30820] [2022-07-22 21:19:29,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:19:29,550 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:19:29,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29 WrapperNode [2022-07-22 21:19:29,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:19:29,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:19:29,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:19:29,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:19:29,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29" (1/1) ... [2022-07-22 21:19:29,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29" (1/1) ... [2022-07-22 21:19:29,609 INFO L137 Inliner]: procedures = 175, calls = 36, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 157 [2022-07-22 21:19:29,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:19:29,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:19:29,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:19:29,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:19:29,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29" (1/1) ... [2022-07-22 21:19:29,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29" (1/1) ... [2022-07-22 21:19:29,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29" (1/1) ... [2022-07-22 21:19:29,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29" (1/1) ... [2022-07-22 21:19:29,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29" (1/1) ... [2022-07-22 21:19:29,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29" (1/1) ... [2022-07-22 21:19:29,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29" (1/1) ... [2022-07-22 21:19:29,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:19:29,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:19:29,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:19:29,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:19:29,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29" (1/1) ... [2022-07-22 21:19:29,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:19:29,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:19:29,682 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) [2022-07-22 21:19:29,705 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 [2022-07-22 21:19:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:19:29,728 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-07-22 21:19:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-07-22 21:19:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-22 21:19:29,729 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-22 21:19:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:19:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:19:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:19:29,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:19:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:19:29,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:19:29,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:19:29,731 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:19:29,831 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:19:29,832 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:19:30,014 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:19:30,097 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:19:30,097 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 21:19:30,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:19:30 BoogieIcfgContainer [2022-07-22 21:19:30,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:19:30,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:19:30,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:19:30,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:19:30,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:19:29" (1/3) ... [2022-07-22 21:19:30,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b5bc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:19:30, skipping insertion in model container [2022-07-22 21:19:30,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:19:29" (2/3) ... [2022-07-22 21:19:30,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b5bc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:19:30, skipping insertion in model container [2022-07-22 21:19:30,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:19:30" (3/3) ... [2022-07-22 21:19:30,105 INFO L111 eAbstractionObserver]: Analyzing ICFG 33_double_lock_p1_vs.i [2022-07-22 21:19:30,109 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:19:30,115 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:19:30,116 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:19:30,116 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:19:30,154 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:19:30,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 79 transitions, 168 flow [2022-07-22 21:19:30,228 INFO L129 PetriNetUnfolder]: 7/89 cut-off events. [2022-07-22 21:19:30,228 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:19:30,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 89 events. 7/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 156 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2022-07-22 21:19:30,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 79 transitions, 168 flow [2022-07-22 21:19:30,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 78 transitions, 164 flow [2022-07-22 21:19:30,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:19:30,253 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d905121, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@c94911d [2022-07-22 21:19:30,254 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-22 21:19:30,266 INFO L129 PetriNetUnfolder]: 2/41 cut-off events. [2022-07-22 21:19:30,267 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:19:30,267 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:30,268 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:30,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:19:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:30,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1285914916, now seen corresponding path program 1 times [2022-07-22 21:19:30,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:30,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119735863] [2022-07-22 21:19:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:30,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:19:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:19:30,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:19:30,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119735863] [2022-07-22 21:19:30,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119735863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:19:30,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:19:30,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:19:30,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786276659] [2022-07-22 21:19:30,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:19:30,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:19:30,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:19:30,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:19:30,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:19:30,518 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 79 [2022-07-22 21:19:30,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:30,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:19:30,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 79 [2022-07-22 21:19:30,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:19:30,679 INFO L129 PetriNetUnfolder]: 104/297 cut-off events. [2022-07-22 21:19:30,679 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-22 21:19:30,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 297 events. 104/297 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1204 event pairs, 21 based on Foata normal form. 142/417 useless extension candidates. Maximal degree in co-relation 493. Up to 107 conditions per place. [2022-07-22 21:19:30,685 INFO L132 encePairwiseOnDemand]: 66/79 looper letters, 23 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2022-07-22 21:19:30,685 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 216 flow [2022-07-22 21:19:30,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:19:30,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:19:30,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2022-07-22 21:19:30,695 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8523206751054853 [2022-07-22 21:19:30,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2022-07-22 21:19:30,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2022-07-22 21:19:30,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:19:30,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2022-07-22 21:19:30,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:30,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:30,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:30,703 INFO L186 Difference]: Start difference. First operand has 78 places, 78 transitions, 164 flow. Second operand 3 states and 202 transitions. [2022-07-22 21:19:30,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 216 flow [2022-07-22 21:19:30,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:19:30,709 INFO L242 Difference]: Finished difference. Result has 71 places, 68 transitions, 177 flow [2022-07-22 21:19:30,710 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2022-07-22 21:19:30,712 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -7 predicate places. [2022-07-22 21:19:30,712 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 177 flow [2022-07-22 21:19:30,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:30,713 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:30,713 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:30,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:19:30,713 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-22 21:19:30,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:30,714 INFO L85 PathProgramCache]: Analyzing trace with hash 389079278, now seen corresponding path program 1 times [2022-07-22 21:19:30,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:30,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815022768] [2022-07-22 21:19:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:30,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:19:30,757 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:19:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:19:30,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:19:30,787 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:19:30,790 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-22 21:19:30,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-22 21:19:30,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-22 21:19:30,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-22 21:19:30,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:19:30,792 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 21:19:30,793 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:19:30,793 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-22 21:19:30,826 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:19:30,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 118 transitions, 260 flow [2022-07-22 21:19:30,840 INFO L129 PetriNetUnfolder]: 9/123 cut-off events. [2022-07-22 21:19:30,842 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:19:30,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 123 events. 9/123 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 271 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 132. Up to 6 conditions per place. [2022-07-22 21:19:30,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 118 transitions, 260 flow [2022-07-22 21:19:30,848 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 99 transitions, 213 flow [2022-07-22 21:19:30,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:19:30,851 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d905121, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@c94911d [2022-07-22 21:19:30,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-22 21:19:30,854 INFO L129 PetriNetUnfolder]: 2/40 cut-off events. [2022-07-22 21:19:30,855 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:19:30,855 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:30,855 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:30,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:19:30,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1583575936, now seen corresponding path program 1 times [2022-07-22 21:19:30,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:30,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159177734] [2022-07-22 21:19:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:30,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:19:30,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:19:30,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:19:30,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159177734] [2022-07-22 21:19:30,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159177734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:19:30,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:19:30,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:19:30,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221688337] [2022-07-22 21:19:30,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:19:30,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:19:30,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:19:30,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:19:30,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:19:30,906 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 118 [2022-07-22 21:19:30,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 99 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:30,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:19:30,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 118 [2022-07-22 21:19:30,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:19:31,389 INFO L129 PetriNetUnfolder]: 2222/3878 cut-off events. [2022-07-22 21:19:31,389 INFO L130 PetriNetUnfolder]: For 323/323 co-relation queries the response was YES. [2022-07-22 21:19:31,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7519 conditions, 3878 events. 2222/3878 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 26800 event pairs, 549 based on Foata normal form. 1519/5219 useless extension candidates. Maximal degree in co-relation 7486. Up to 2135 conditions per place. [2022-07-22 21:19:31,420 INFO L132 encePairwiseOnDemand]: 101/118 looper letters, 41 selfloop transitions, 10 changer transitions 0/109 dead transitions. [2022-07-22 21:19:31,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 109 transitions, 340 flow [2022-07-22 21:19:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:19:31,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:19:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2022-07-22 21:19:31,426 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7768361581920904 [2022-07-22 21:19:31,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2022-07-22 21:19:31,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2022-07-22 21:19:31,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:19:31,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2022-07-22 21:19:31,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:31,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:31,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:31,430 INFO L186 Difference]: Start difference. First operand has 100 places, 99 transitions, 213 flow. Second operand 3 states and 275 transitions. [2022-07-22 21:19:31,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 109 transitions, 340 flow [2022-07-22 21:19:31,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 109 transitions, 337 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-22 21:19:31,434 INFO L242 Difference]: Finished difference. Result has 93 places, 95 transitions, 264 flow [2022-07-22 21:19:31,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=93, PETRI_TRANSITIONS=95} [2022-07-22 21:19:31,435 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -7 predicate places. [2022-07-22 21:19:31,435 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 95 transitions, 264 flow [2022-07-22 21:19:31,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:31,435 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:31,435 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:31,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:19:31,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:19:31,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:31,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1543540875, now seen corresponding path program 1 times [2022-07-22 21:19:31,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:31,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564517422] [2022-07-22 21:19:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:31,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:19:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:19:31,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:19:31,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564517422] [2022-07-22 21:19:31,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564517422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:19:31,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:19:31,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:19:31,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384575727] [2022-07-22 21:19:31,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:19:31,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:19:31,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:19:31,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:19:31,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:19:31,523 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 118 [2022-07-22 21:19:31,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 95 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:31,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:19:31,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 118 [2022-07-22 21:19:31,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:19:32,069 INFO L129 PetriNetUnfolder]: 2471/4719 cut-off events. [2022-07-22 21:19:32,069 INFO L130 PetriNetUnfolder]: For 1671/1671 co-relation queries the response was YES. [2022-07-22 21:19:32,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10726 conditions, 4719 events. 2471/4719 cut-off events. For 1671/1671 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36328 event pairs, 468 based on Foata normal form. 96/4793 useless extension candidates. Maximal degree in co-relation 10690. Up to 1812 conditions per place. [2022-07-22 21:19:32,106 INFO L132 encePairwiseOnDemand]: 107/118 looper letters, 60 selfloop transitions, 14 changer transitions 0/132 dead transitions. [2022-07-22 21:19:32,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 132 transitions, 514 flow [2022-07-22 21:19:32,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:19:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:19:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2022-07-22 21:19:32,108 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7627118644067796 [2022-07-22 21:19:32,108 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2022-07-22 21:19:32,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2022-07-22 21:19:32,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:19:32,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2022-07-22 21:19:32,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:32,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:32,111 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:32,111 INFO L186 Difference]: Start difference. First operand has 93 places, 95 transitions, 264 flow. Second operand 4 states and 360 transitions. [2022-07-22 21:19:32,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 132 transitions, 514 flow [2022-07-22 21:19:32,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 132 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:19:32,120 INFO L242 Difference]: Finished difference. Result has 95 places, 99 transitions, 306 flow [2022-07-22 21:19:32,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=95, PETRI_TRANSITIONS=99} [2022-07-22 21:19:32,122 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, -5 predicate places. [2022-07-22 21:19:32,122 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 99 transitions, 306 flow [2022-07-22 21:19:32,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:32,123 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:32,123 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:32,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:19:32,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:19:32,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:32,124 INFO L85 PathProgramCache]: Analyzing trace with hash -730331812, now seen corresponding path program 1 times [2022-07-22 21:19:32,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:32,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333922956] [2022-07-22 21:19:32,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:32,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:19:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:19:32,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:19:32,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333922956] [2022-07-22 21:19:32,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333922956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:19:32,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:19:32,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:19:32,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396891830] [2022-07-22 21:19:32,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:19:32,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:19:32,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:19:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:19:32,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:19:32,200 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 118 [2022-07-22 21:19:32,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:32,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:19:32,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 118 [2022-07-22 21:19:32,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:19:32,734 INFO L129 PetriNetUnfolder]: 2375/5273 cut-off events. [2022-07-22 21:19:32,734 INFO L130 PetriNetUnfolder]: For 2238/2238 co-relation queries the response was YES. [2022-07-22 21:19:32,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11645 conditions, 5273 events. 2375/5273 cut-off events. For 2238/2238 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 45616 event pairs, 797 based on Foata normal form. 110/5361 useless extension candidates. Maximal degree in co-relation 11608. Up to 1748 conditions per place. [2022-07-22 21:19:32,769 INFO L132 encePairwiseOnDemand]: 106/118 looper letters, 61 selfloop transitions, 24 changer transitions 0/143 dead transitions. [2022-07-22 21:19:32,770 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 143 transitions, 620 flow [2022-07-22 21:19:32,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:19:32,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:19:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2022-07-22 21:19:32,771 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7627118644067796 [2022-07-22 21:19:32,771 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2022-07-22 21:19:32,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2022-07-22 21:19:32,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:19:32,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2022-07-22 21:19:32,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:32,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:32,774 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:32,774 INFO L186 Difference]: Start difference. First operand has 95 places, 99 transitions, 306 flow. Second operand 4 states and 360 transitions. [2022-07-22 21:19:32,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 143 transitions, 620 flow [2022-07-22 21:19:32,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 143 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:19:32,779 INFO L242 Difference]: Finished difference. Result has 100 places, 114 transitions, 491 flow [2022-07-22 21:19:32,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=491, PETRI_PLACES=100, PETRI_TRANSITIONS=114} [2022-07-22 21:19:32,780 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 0 predicate places. [2022-07-22 21:19:32,781 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 114 transitions, 491 flow [2022-07-22 21:19:32,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:32,781 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:32,781 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:32,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:19:32,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:19:32,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:32,782 INFO L85 PathProgramCache]: Analyzing trace with hash -605140667, now seen corresponding path program 1 times [2022-07-22 21:19:32,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:32,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744286799] [2022-07-22 21:19:32,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:32,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:19:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:19:32,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:19:32,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744286799] [2022-07-22 21:19:32,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744286799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:19:32,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:19:32,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:19:32,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12768453] [2022-07-22 21:19:32,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:19:32,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:19:32,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:19:32,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:19:32,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:19:32,839 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 118 [2022-07-22 21:19:32,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 114 transitions, 491 flow. Second operand has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:32,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:19:32,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 118 [2022-07-22 21:19:32,840 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:19:33,396 INFO L129 PetriNetUnfolder]: 2529/5740 cut-off events. [2022-07-22 21:19:33,399 INFO L130 PetriNetUnfolder]: For 4762/4762 co-relation queries the response was YES. [2022-07-22 21:19:33,416 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14434 conditions, 5740 events. 2529/5740 cut-off events. For 4762/4762 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 51951 event pairs, 464 based on Foata normal form. 48/5766 useless extension candidates. Maximal degree in co-relation 14393. Up to 1739 conditions per place. [2022-07-22 21:19:33,439 INFO L132 encePairwiseOnDemand]: 106/118 looper letters, 84 selfloop transitions, 29 changer transitions 0/171 dead transitions. [2022-07-22 21:19:33,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 171 transitions, 921 flow [2022-07-22 21:19:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:19:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:19:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2022-07-22 21:19:33,441 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7728813559322034 [2022-07-22 21:19:33,441 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2022-07-22 21:19:33,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2022-07-22 21:19:33,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:19:33,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2022-07-22 21:19:33,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:33,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:33,444 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:33,444 INFO L186 Difference]: Start difference. First operand has 100 places, 114 transitions, 491 flow. Second operand 5 states and 456 transitions. [2022-07-22 21:19:33,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 171 transitions, 921 flow [2022-07-22 21:19:33,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 171 transitions, 909 flow, removed 6 selfloop flow, removed 0 redundant places. [2022-07-22 21:19:33,461 INFO L242 Difference]: Finished difference. Result has 106 places, 126 transitions, 677 flow [2022-07-22 21:19:33,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=677, PETRI_PLACES=106, PETRI_TRANSITIONS=126} [2022-07-22 21:19:33,462 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 6 predicate places. [2022-07-22 21:19:33,462 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 126 transitions, 677 flow [2022-07-22 21:19:33,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.6) internal successors, (363), 5 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:33,463 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:33,463 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:33,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:19:33,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:19:33,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:33,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1562317620, now seen corresponding path program 1 times [2022-07-22 21:19:33,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:33,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371940264] [2022-07-22 21:19:33,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:33,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:19:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:19:33,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:19:33,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371940264] [2022-07-22 21:19:33,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371940264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:19:33,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:19:33,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:19:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858803291] [2022-07-22 21:19:33,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:19:33,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:19:33,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:19:33,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:19:33,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:19:33,499 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 118 [2022-07-22 21:19:33,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 126 transitions, 677 flow. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:33,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:19:33,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 118 [2022-07-22 21:19:33,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:19:34,993 INFO L129 PetriNetUnfolder]: 7722/16634 cut-off events. [2022-07-22 21:19:34,993 INFO L130 PetriNetUnfolder]: For 25730/25972 co-relation queries the response was YES. [2022-07-22 21:19:35,071 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44430 conditions, 16634 events. 7722/16634 cut-off events. For 25730/25972 co-relation queries the response was YES. Maximal size of possible extension queue 1377. Compared 173596 event pairs, 2431 based on Foata normal form. 462/16897 useless extension candidates. Maximal degree in co-relation 44380. Up to 8223 conditions per place. [2022-07-22 21:19:35,150 INFO L132 encePairwiseOnDemand]: 108/118 looper letters, 112 selfloop transitions, 10 changer transitions 0/182 dead transitions. [2022-07-22 21:19:35,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 182 transitions, 1389 flow [2022-07-22 21:19:35,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:19:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:19:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2022-07-22 21:19:35,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.768361581920904 [2022-07-22 21:19:35,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2022-07-22 21:19:35,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2022-07-22 21:19:35,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:19:35,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2022-07-22 21:19:35,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:35,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:35,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:35,154 INFO L186 Difference]: Start difference. First operand has 106 places, 126 transitions, 677 flow. Second operand 3 states and 272 transitions. [2022-07-22 21:19:35,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 182 transitions, 1389 flow [2022-07-22 21:19:35,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 182 transitions, 1265 flow, removed 42 selfloop flow, removed 2 redundant places. [2022-07-22 21:19:35,219 INFO L242 Difference]: Finished difference. Result has 107 places, 133 transitions, 667 flow [2022-07-22 21:19:35,220 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=667, PETRI_PLACES=107, PETRI_TRANSITIONS=133} [2022-07-22 21:19:35,220 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 7 predicate places. [2022-07-22 21:19:35,220 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 133 transitions, 667 flow [2022-07-22 21:19:35,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:35,221 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:35,221 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:35,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:19:35,221 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:19:35,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:35,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1313554895, now seen corresponding path program 1 times [2022-07-22 21:19:35,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:35,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038843986] [2022-07-22 21:19:35,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:35,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:19:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:19:35,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:19:35,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038843986] [2022-07-22 21:19:35,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038843986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:19:35,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:19:35,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:19:35,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358978616] [2022-07-22 21:19:35,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:19:35,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:19:35,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:19:35,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:19:35,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:19:35,330 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 118 [2022-07-22 21:19:35,330 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 133 transitions, 667 flow. Second operand has 6 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:35,330 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:19:35,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 118 [2022-07-22 21:19:35,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:19:37,364 INFO L129 PetriNetUnfolder]: 10613/22507 cut-off events. [2022-07-22 21:19:37,364 INFO L130 PetriNetUnfolder]: For 33522/33942 co-relation queries the response was YES. [2022-07-22 21:19:37,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73521 conditions, 22507 events. 10613/22507 cut-off events. For 33522/33942 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 237203 event pairs, 2266 based on Foata normal form. 529/22748 useless extension candidates. Maximal degree in co-relation 73470. Up to 11039 conditions per place. [2022-07-22 21:19:37,656 INFO L132 encePairwiseOnDemand]: 109/118 looper letters, 124 selfloop transitions, 13 changer transitions 0/196 dead transitions. [2022-07-22 21:19:37,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 196 transitions, 1411 flow [2022-07-22 21:19:37,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 21:19:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-22 21:19:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2022-07-22 21:19:37,660 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7016949152542373 [2022-07-22 21:19:37,660 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 414 transitions. [2022-07-22 21:19:37,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 414 transitions. [2022-07-22 21:19:37,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:19:37,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 414 transitions. [2022-07-22 21:19:37,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:37,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:37,662 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:37,663 INFO L186 Difference]: Start difference. First operand has 107 places, 133 transitions, 667 flow. Second operand 5 states and 414 transitions. [2022-07-22 21:19:37,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 196 transitions, 1411 flow [2022-07-22 21:19:37,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 196 transitions, 1391 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:19:37,792 INFO L242 Difference]: Finished difference. Result has 111 places, 141 transitions, 742 flow [2022-07-22 21:19:37,792 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=742, PETRI_PLACES=111, PETRI_TRANSITIONS=141} [2022-07-22 21:19:37,793 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 11 predicate places. [2022-07-22 21:19:37,793 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 141 transitions, 742 flow [2022-07-22 21:19:37,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:37,793 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:37,794 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:37,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:19:37,794 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:19:37,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:37,794 INFO L85 PathProgramCache]: Analyzing trace with hash -674975574, now seen corresponding path program 2 times [2022-07-22 21:19:37,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:37,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586026163] [2022-07-22 21:19:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:37,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:19:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:19:37,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:19:37,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586026163] [2022-07-22 21:19:37,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586026163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:19:37,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:19:37,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:19:37,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620900083] [2022-07-22 21:19:37,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:19:37,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:19:37,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:19:37,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:19:37,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:19:37,892 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 118 [2022-07-22 21:19:37,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 141 transitions, 742 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:37,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:19:37,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 118 [2022-07-22 21:19:37,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:19:40,049 INFO L129 PetriNetUnfolder]: 10261/23485 cut-off events. [2022-07-22 21:19:40,049 INFO L130 PetriNetUnfolder]: For 43177/43793 co-relation queries the response was YES. [2022-07-22 21:19:40,126 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81208 conditions, 23485 events. 10261/23485 cut-off events. For 43177/43793 co-relation queries the response was YES. Maximal size of possible extension queue 1539. Compared 259383 event pairs, 1858 based on Foata normal form. 615/23855 useless extension candidates. Maximal degree in co-relation 81148. Up to 9111 conditions per place. [2022-07-22 21:19:40,232 INFO L132 encePairwiseOnDemand]: 106/118 looper letters, 124 selfloop transitions, 24 changer transitions 0/201 dead transitions. [2022-07-22 21:19:40,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 201 transitions, 1509 flow [2022-07-22 21:19:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:19:40,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:19:40,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 444 transitions. [2022-07-22 21:19:40,234 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6271186440677966 [2022-07-22 21:19:40,234 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 444 transitions. [2022-07-22 21:19:40,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 444 transitions. [2022-07-22 21:19:40,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:19:40,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 444 transitions. [2022-07-22 21:19:40,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:40,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:40,236 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 118.0) internal successors, (826), 7 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:40,236 INFO L186 Difference]: Start difference. First operand has 111 places, 141 transitions, 742 flow. Second operand 6 states and 444 transitions. [2022-07-22 21:19:40,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 201 transitions, 1509 flow [2022-07-22 21:19:40,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 201 transitions, 1506 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:19:40,359 INFO L242 Difference]: Finished difference. Result has 115 places, 150 transitions, 877 flow [2022-07-22 21:19:40,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=877, PETRI_PLACES=115, PETRI_TRANSITIONS=150} [2022-07-22 21:19:40,361 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 15 predicate places. [2022-07-22 21:19:40,362 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 150 transitions, 877 flow [2022-07-22 21:19:40,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:40,363 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:40,363 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:40,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:19:40,363 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:19:40,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:40,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1155385899, now seen corresponding path program 2 times [2022-07-22 21:19:40,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:40,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944124090] [2022-07-22 21:19:40,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:40,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:19:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:19:40,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:19:40,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944124090] [2022-07-22 21:19:40,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944124090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:19:40,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:19:40,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:19:40,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220356705] [2022-07-22 21:19:40,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:19:40,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:19:40,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:19:40,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:19:40,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:19:40,538 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 118 [2022-07-22 21:19:40,539 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 150 transitions, 877 flow. Second operand has 10 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:40,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:19:40,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 118 [2022-07-22 21:19:40,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:19:41,781 INFO L129 PetriNetUnfolder]: 5383/13196 cut-off events. [2022-07-22 21:19:41,781 INFO L130 PetriNetUnfolder]: For 31691/32148 co-relation queries the response was YES. [2022-07-22 21:19:41,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50748 conditions, 13196 events. 5383/13196 cut-off events. For 31691/32148 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 137114 event pairs, 1027 based on Foata normal form. 347/13384 useless extension candidates. Maximal degree in co-relation 50684. Up to 5267 conditions per place. [2022-07-22 21:19:41,882 INFO L132 encePairwiseOnDemand]: 107/118 looper letters, 100 selfloop transitions, 26 changer transitions 0/178 dead transitions. [2022-07-22 21:19:41,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 178 transitions, 1330 flow [2022-07-22 21:19:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:19:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:19:41,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 558 transitions. [2022-07-22 21:19:41,884 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5911016949152542 [2022-07-22 21:19:41,884 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 558 transitions. [2022-07-22 21:19:41,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 558 transitions. [2022-07-22 21:19:41,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:19:41,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 558 transitions. [2022-07-22 21:19:41,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.75) internal successors, (558), 8 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:41,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 118.0) internal successors, (1062), 9 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:41,887 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 118.0) internal successors, (1062), 9 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:41,887 INFO L186 Difference]: Start difference. First operand has 115 places, 150 transitions, 877 flow. Second operand 8 states and 558 transitions. [2022-07-22 21:19:41,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 178 transitions, 1330 flow [2022-07-22 21:19:41,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 178 transitions, 1325 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-07-22 21:19:41,943 INFO L242 Difference]: Finished difference. Result has 119 places, 144 transitions, 860 flow [2022-07-22 21:19:41,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=118, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=860, PETRI_PLACES=119, PETRI_TRANSITIONS=144} [2022-07-22 21:19:41,944 INFO L279 CegarLoopForPetriNet]: 100 programPoint places, 19 predicate places. [2022-07-22 21:19:41,944 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 144 transitions, 860 flow [2022-07-22 21:19:41,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 65.1) internal successors, (651), 10 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:41,944 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:41,944 INFO L200 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:41,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:19:41,945 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-22 21:19:41,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:41,945 INFO L85 PathProgramCache]: Analyzing trace with hash -777007714, now seen corresponding path program 1 times [2022-07-22 21:19:41,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:41,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819477511] [2022-07-22 21:19:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:41,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:19:41,953 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:19:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:19:41,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:19:41,962 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:19:41,962 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2022-07-22 21:19:41,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-22 21:19:41,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-22 21:19:41,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-07-22 21:19:41,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-22 21:19:41,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:19:41,963 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2022-07-22 21:19:41,963 WARN L231 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-22 21:19:41,963 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-07-22 21:19:42,009 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:19:42,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 155 places, 157 transitions, 356 flow [2022-07-22 21:19:42,022 INFO L129 PetriNetUnfolder]: 11/157 cut-off events. [2022-07-22 21:19:42,024 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-07-22 21:19:42,025 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 157 events. 11/157 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 383 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2022-07-22 21:19:42,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 157 transitions, 356 flow [2022-07-22 21:19:42,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 120 transitions, 264 flow [2022-07-22 21:19:42,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:19:42,028 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d905121, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@c94911d [2022-07-22 21:19:42,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-22 21:19:42,033 INFO L129 PetriNetUnfolder]: 4/46 cut-off events. [2022-07-22 21:19:42,033 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:19:42,033 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:42,033 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:42,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-22 21:19:42,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:42,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1099456548, now seen corresponding path program 1 times [2022-07-22 21:19:42,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:42,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720309796] [2022-07-22 21:19:42,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:42,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:19:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:19:42,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:19:42,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720309796] [2022-07-22 21:19:42,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720309796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:19:42,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:19:42,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:19:42,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190302377] [2022-07-22 21:19:42,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:19:42,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:19:42,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:19:42,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:19:42,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:19:42,059 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 157 [2022-07-22 21:19:42,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 120 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:42,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:19:42,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 157 [2022-07-22 21:19:42,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:19:45,404 INFO L129 PetriNetUnfolder]: 31382/46537 cut-off events. [2022-07-22 21:19:45,404 INFO L130 PetriNetUnfolder]: For 6751/6751 co-relation queries the response was YES. [2022-07-22 21:19:45,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92714 conditions, 46537 events. 31382/46537 cut-off events. For 6751/6751 co-relation queries the response was YES. Maximal size of possible extension queue 3390. Compared 367978 event pairs, 9243 based on Foata normal form. 14398/59343 useless extension candidates. Maximal degree in co-relation 92680. Up to 28901 conditions per place. [2022-07-22 21:19:46,005 INFO L132 encePairwiseOnDemand]: 136/157 looper letters, 55 selfloop transitions, 14 changer transitions 0/139 dead transitions. [2022-07-22 21:19:46,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 139 transitions, 452 flow [2022-07-22 21:19:46,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:19:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:19:46,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2022-07-22 21:19:46,007 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7303609341825902 [2022-07-22 21:19:46,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2022-07-22 21:19:46,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2022-07-22 21:19:46,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:19:46,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2022-07-22 21:19:46,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:46,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:46,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:46,009 INFO L186 Difference]: Start difference. First operand has 122 places, 120 transitions, 264 flow. Second operand 3 states and 344 transitions. [2022-07-22 21:19:46,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 139 transitions, 452 flow [2022-07-22 21:19:46,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 139 transitions, 443 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-07-22 21:19:46,012 INFO L242 Difference]: Finished difference. Result has 115 places, 120 transitions, 343 flow [2022-07-22 21:19:46,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=343, PETRI_PLACES=115, PETRI_TRANSITIONS=120} [2022-07-22 21:19:46,015 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -7 predicate places. [2022-07-22 21:19:46,015 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 120 transitions, 343 flow [2022-07-22 21:19:46,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:46,016 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:46,016 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:46,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:19:46,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-22 21:19:46,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:46,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2112374529, now seen corresponding path program 1 times [2022-07-22 21:19:46,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:46,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748120893] [2022-07-22 21:19:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:46,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:19:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:19:46,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:19:46,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748120893] [2022-07-22 21:19:46,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748120893] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:19:46,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:19:46,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:19:46,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629395123] [2022-07-22 21:19:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:19:46,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:19:46,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:19:46,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:19:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:19:46,069 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 157 [2022-07-22 21:19:46,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 120 transitions, 343 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:46,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:19:46,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 157 [2022-07-22 21:19:46,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:19:52,495 INFO L129 PetriNetUnfolder]: 45925/79427 cut-off events. [2022-07-22 21:19:52,495 INFO L130 PetriNetUnfolder]: For 28673/28673 co-relation queries the response was YES. [2022-07-22 21:19:52,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178826 conditions, 79427 events. 45925/79427 cut-off events. For 28673/28673 co-relation queries the response was YES. Maximal size of possible extension queue 5492. Compared 819496 event pairs, 14512 based on Foata normal form. 2048/81443 useless extension candidates. Maximal degree in co-relation 178789. Up to 25484 conditions per place. [2022-07-22 21:19:53,497 INFO L132 encePairwiseOnDemand]: 141/157 looper letters, 76 selfloop transitions, 38 changer transitions 0/184 dead transitions. [2022-07-22 21:19:53,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 184 transitions, 773 flow [2022-07-22 21:19:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:19:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:19:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2022-07-22 21:19:53,498 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7277070063694268 [2022-07-22 21:19:53,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 457 transitions. [2022-07-22 21:19:53,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 457 transitions. [2022-07-22 21:19:53,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:19:53,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 457 transitions. [2022-07-22 21:19:53,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:53,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:53,501 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:53,501 INFO L186 Difference]: Start difference. First operand has 115 places, 120 transitions, 343 flow. Second operand 4 states and 457 transitions. [2022-07-22 21:19:53,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 184 transitions, 773 flow [2022-07-22 21:19:53,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 184 transitions, 743 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:19:53,530 INFO L242 Difference]: Finished difference. Result has 119 places, 145 transitions, 601 flow [2022-07-22 21:19:53,531 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=601, PETRI_PLACES=119, PETRI_TRANSITIONS=145} [2022-07-22 21:19:53,531 INFO L279 CegarLoopForPetriNet]: 122 programPoint places, -3 predicate places. [2022-07-22 21:19:53,531 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 145 transitions, 601 flow [2022-07-22 21:19:53,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:53,531 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:19:53,532 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:19:53,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:19:53,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-07-22 21:19:53,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:19:53,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1556245758, now seen corresponding path program 1 times [2022-07-22 21:19:53,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:19:53,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238003695] [2022-07-22 21:19:53,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:19:53,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:19:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:19:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:19:53,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:19:53,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238003695] [2022-07-22 21:19:53,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238003695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:19:53,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:19:53,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:19:53,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405012704] [2022-07-22 21:19:53,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:19:53,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:19:53,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:19:53,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:19:53,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:19:53,557 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 157 [2022-07-22 21:19:53,557 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 145 transitions, 601 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:19:53,557 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:19:53,557 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 157 [2022-07-22 21:19:53,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand