/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:58:19,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:58:19,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:58:19,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:58:19,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:58:19,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:58:19,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:58:19,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:58:19,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:58:19,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:58:19,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:58:19,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:58:19,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:58:19,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:58:19,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:58:19,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:58:19,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:58:19,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:58:19,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:58:19,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:58:19,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:58:19,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:58:19,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:58:19,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:58:19,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 22:58:19,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 22:58:19,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 22:58:19,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 22:58:19,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 22:58:19,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 22:58:19,445 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:58:19,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:58:19,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:58:19,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:58:19,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:58:19,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:58:19,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:58:19,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:58:19,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:58:19,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:58:19,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:58:19,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 22:58:19,471 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:58:19,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:58:19,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:58:19,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:58:19,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:58:19,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:58:19,474 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:58:19,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:58:19,474 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:58:19,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:58:19,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:58:19,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:58:19,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:58:19,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:58:19,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:58:19,476 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:58:19,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:58:19,476 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:58:19,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:58:19,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:58:19,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:58:19,476 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:58:19,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:58:19,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:58:19,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:58:19,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:58:19,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:58:19,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:58:19,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:58:19,478 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:58:19,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:58:19,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:58:19,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:58:19,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:58:19,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:58:19,725 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:58:19,725 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:58:19,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2022-09-20 22:58:19,784 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7cdc093/a0670d7b91e44e1ab4c7a52456779a08/FLAG481e55189 [2022-09-20 22:58:20,150 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:58:20,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2022-09-20 22:58:20,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7cdc093/a0670d7b91e44e1ab4c7a52456779a08/FLAG481e55189 [2022-09-20 22:58:20,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d7cdc093/a0670d7b91e44e1ab4c7a52456779a08 [2022-09-20 22:58:20,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:58:20,175 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:58:20,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:58:20,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:58:20,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:58:20,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:58:20" (1/1) ... [2022-09-20 22:58:20,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e0ce1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20, skipping insertion in model container [2022-09-20 22:58:20,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:58:20" (1/1) ... [2022-09-20 22:58:20,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:58:20,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:58:20,389 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-09-20 22:58:20,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:58:20,412 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:58:20,439 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-09-20 22:58:20,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:58:20,453 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:58:20,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20 WrapperNode [2022-09-20 22:58:20,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:58:20,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:58:20,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:58:20,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:58:20,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20" (1/1) ... [2022-09-20 22:58:20,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20" (1/1) ... [2022-09-20 22:58:20,494 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 277 [2022-09-20 22:58:20,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:58:20,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:58:20,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:58:20,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:58:20,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20" (1/1) ... [2022-09-20 22:58:20,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20" (1/1) ... [2022-09-20 22:58:20,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20" (1/1) ... [2022-09-20 22:58:20,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20" (1/1) ... [2022-09-20 22:58:20,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20" (1/1) ... [2022-09-20 22:58:20,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20" (1/1) ... [2022-09-20 22:58:20,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20" (1/1) ... [2022-09-20 22:58:20,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:58:20,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:58:20,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:58:20,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:58:20,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20" (1/1) ... [2022-09-20 22:58:20,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:58:20,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:58:20,558 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) [2022-09-20 22:58:20,579 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 [2022-09-20 22:58:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:58:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 22:58:20,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 22:58:20,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 22:58:20,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 22:58:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:58:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:58:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:58:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 22:58:20,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:58:20,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:58:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 22:58:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:58:20,606 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:58:20,715 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:58:20,716 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:58:21,139 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:58:21,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:58:21,156 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-20 22:58:21,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:58:21 BoogieIcfgContainer [2022-09-20 22:58:21,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:58:21,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:58:21,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:58:21,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:58:21,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:58:20" (1/3) ... [2022-09-20 22:58:21,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eaa0a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:58:21, skipping insertion in model container [2022-09-20 22:58:21,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:58:20" (2/3) ... [2022-09-20 22:58:21,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eaa0a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:58:21, skipping insertion in model container [2022-09-20 22:58:21,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:58:21" (3/3) ... [2022-09-20 22:58:21,169 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-09-20 22:58:21,186 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:58:21,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 22:58:21,186 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:58:21,300 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 22:58:21,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 375 places, 396 transitions, 808 flow [2022-09-20 22:58:21,536 INFO L130 PetriNetUnfolder]: 28/394 cut-off events. [2022-09-20 22:58:21,536 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 22:58:21,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 394 events. 28/394 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 927 event pairs, 0 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 271. Up to 2 conditions per place. [2022-09-20 22:58:21,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 375 places, 396 transitions, 808 flow [2022-09-20 22:58:21,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 364 places, 385 transitions, 782 flow [2022-09-20 22:58:21,570 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:58:21,579 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66c3d88a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:58:21,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 22:58:21,662 INFO L130 PetriNetUnfolder]: 28/384 cut-off events. [2022-09-20 22:58:21,662 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 22:58:21,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:58:21,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 22:58:21,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:58:21,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:58:21,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1847553368, now seen corresponding path program 1 times [2022-09-20 22:58:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:58:21,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808939530] [2022-09-20 22:58:21,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:58:21,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:58:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:58:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:58:21,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:58:21,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808939530] [2022-09-20 22:58:21,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808939530] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:58:21,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:58:21,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 22:58:21,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661401922] [2022-09-20 22:58:21,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:58:21,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 22:58:21,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:58:21,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 22:58:21,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 22:58:21,989 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 368 out of 396 [2022-09-20 22:58:21,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 385 transitions, 782 flow. Second operand has 2 states, 2 states have (on average 371.0) internal successors, (742), 2 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:21,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:58:21,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 368 of 396 [2022-09-20 22:58:21,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:58:22,083 INFO L130 PetriNetUnfolder]: 5/362 cut-off events. [2022-09-20 22:58:22,084 INFO L131 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-09-20 22:58:22,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 362 events. 5/362 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 901 event pairs, 0 based on Foata normal form. 29/366 useless extension candidates. Maximal degree in co-relation 254. Up to 5 conditions per place. [2022-09-20 22:58:22,091 INFO L137 encePairwiseOnDemand]: 373/396 looper letters, 4 selfloop transitions, 0 changer transitions 4/362 dead transitions. [2022-09-20 22:58:22,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 362 transitions, 744 flow [2022-09-20 22:58:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 22:58:22,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 22:58:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 763 transitions. [2022-09-20 22:58:22,108 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9633838383838383 [2022-09-20 22:58:22,109 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 763 transitions. [2022-09-20 22:58:22,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 763 transitions. [2022-09-20 22:58:22,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:58:22,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 763 transitions. [2022-09-20 22:58:22,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 381.5) internal successors, (763), 2 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:22,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:22,129 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 396.0) internal successors, (1188), 3 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:22,131 INFO L175 Difference]: Start difference. First operand has 364 places, 385 transitions, 782 flow. Second operand 2 states and 763 transitions. [2022-09-20 22:58:22,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 362 transitions, 744 flow [2022-09-20 22:58:22,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 362 transitions, 736 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 22:58:22,143 INFO L231 Difference]: Finished difference. Result has 361 places, 358 transitions, 720 flow [2022-09-20 22:58:22,145 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=720, PETRI_PLACES=361, PETRI_TRANSITIONS=358} [2022-09-20 22:58:22,151 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, -3 predicate places. [2022-09-20 22:58:22,152 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 358 transitions, 720 flow [2022-09-20 22:58:22,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 371.0) internal successors, (742), 2 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:22,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:58:22,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 22:58:22,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:58:22,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:58:22,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:58:22,155 INFO L85 PathProgramCache]: Analyzing trace with hash 62130702, now seen corresponding path program 1 times [2022-09-20 22:58:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:58:22,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921663735] [2022-09-20 22:58:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:58:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:58:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:58:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:58:22,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:58:22,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921663735] [2022-09-20 22:58:22,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921663735] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:58:22,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:58:22,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 22:58:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193221899] [2022-09-20 22:58:22,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:58:22,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 22:58:22,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:58:22,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 22:58:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 22:58:22,908 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 22:58:22,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 358 transitions, 720 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:22,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:58:22,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 22:58:22,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:58:27,088 INFO L130 PetriNetUnfolder]: 4047/15020 cut-off events. [2022-09-20 22:58:27,089 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2022-09-20 22:58:27,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22866 conditions, 15020 events. 4047/15020 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 151781 event pairs, 841 based on Foata normal form. 1/14071 useless extension candidates. Maximal degree in co-relation 22863. Up to 4039 conditions per place. [2022-09-20 22:58:27,179 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 574 selfloop transitions, 75 changer transitions 33/928 dead transitions. [2022-09-20 22:58:27,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 928 transitions, 3247 flow [2022-09-20 22:58:27,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-20 22:58:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-20 22:58:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 8875 transitions. [2022-09-20 22:58:27,197 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7003630050505051 [2022-09-20 22:58:27,198 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 8875 transitions. [2022-09-20 22:58:27,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 8875 transitions. [2022-09-20 22:58:27,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:58:27,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 8875 transitions. [2022-09-20 22:58:27,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 277.34375) internal successors, (8875), 32 states have internal predecessors, (8875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:27,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:27,249 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 396.0) internal successors, (13068), 33 states have internal predecessors, (13068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:27,250 INFO L175 Difference]: Start difference. First operand has 361 places, 358 transitions, 720 flow. Second operand 32 states and 8875 transitions. [2022-09-20 22:58:27,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 928 transitions, 3247 flow [2022-09-20 22:58:27,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 928 transitions, 3247 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 22:58:27,265 INFO L231 Difference]: Finished difference. Result has 414 places, 433 transitions, 1231 flow [2022-09-20 22:58:27,266 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1231, PETRI_PLACES=414, PETRI_TRANSITIONS=433} [2022-09-20 22:58:27,267 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 50 predicate places. [2022-09-20 22:58:27,267 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 433 transitions, 1231 flow [2022-09-20 22:58:27,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:27,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:58:27,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 22:58:27,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:58:27,269 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:58:27,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:58:27,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1746374084, now seen corresponding path program 2 times [2022-09-20 22:58:27,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:58:27,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355566752] [2022-09-20 22:58:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:58:27,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:58:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:58:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:58:27,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:58:27,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355566752] [2022-09-20 22:58:27,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355566752] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:58:27,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:58:27,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 22:58:27,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191485215] [2022-09-20 22:58:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:58:27,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 22:58:27,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:58:27,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 22:58:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 22:58:27,690 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 22:58:27,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 433 transitions, 1231 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:27,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:58:27,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 22:58:27,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:58:32,504 INFO L130 PetriNetUnfolder]: 4738/17502 cut-off events. [2022-09-20 22:58:32,504 INFO L131 PetriNetUnfolder]: For 6448/6500 co-relation queries the response was YES. [2022-09-20 22:58:32,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33380 conditions, 17502 events. 4738/17502 cut-off events. For 6448/6500 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 182181 event pairs, 1131 based on Foata normal form. 30/16430 useless extension candidates. Maximal degree in co-relation 33350. Up to 4459 conditions per place. [2022-09-20 22:58:32,661 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 509 selfloop transitions, 164 changer transitions 17/936 dead transitions. [2022-09-20 22:58:32,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 936 transitions, 4435 flow [2022-09-20 22:58:32,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-09-20 22:58:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-09-20 22:58:32,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 11120 transitions. [2022-09-20 22:58:32,690 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6848977580684897 [2022-09-20 22:58:32,690 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 11120 transitions. [2022-09-20 22:58:32,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 11120 transitions. [2022-09-20 22:58:32,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:58:32,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 11120 transitions. [2022-09-20 22:58:32,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 271.219512195122) internal successors, (11120), 41 states have internal predecessors, (11120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:32,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:32,766 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 396.0) internal successors, (16632), 42 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:32,767 INFO L175 Difference]: Start difference. First operand has 414 places, 433 transitions, 1231 flow. Second operand 41 states and 11120 transitions. [2022-09-20 22:58:32,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 936 transitions, 4435 flow [2022-09-20 22:58:32,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 936 transitions, 4289 flow, removed 68 selfloop flow, removed 8 redundant places. [2022-09-20 22:58:32,865 INFO L231 Difference]: Finished difference. Result has 470 places, 546 transitions, 2416 flow [2022-09-20 22:58:32,866 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2416, PETRI_PLACES=470, PETRI_TRANSITIONS=546} [2022-09-20 22:58:32,868 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 106 predicate places. [2022-09-20 22:58:32,868 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 546 transitions, 2416 flow [2022-09-20 22:58:32,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:32,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:58:32,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 22:58:32,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:58:32,870 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:58:32,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:58:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 240097888, now seen corresponding path program 3 times [2022-09-20 22:58:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:58:32,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200297990] [2022-09-20 22:58:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:58:32,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:58:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:58:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:58:33,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:58:33,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200297990] [2022-09-20 22:58:33,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200297990] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:58:33,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:58:33,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 22:58:33,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847684988] [2022-09-20 22:58:33,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:58:33,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 22:58:33,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:58:33,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 22:58:33,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 22:58:33,266 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 22:58:33,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 546 transitions, 2416 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:33,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:58:33,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 22:58:33,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:58:38,270 INFO L130 PetriNetUnfolder]: 4819/17595 cut-off events. [2022-09-20 22:58:38,270 INFO L131 PetriNetUnfolder]: For 16113/16168 co-relation queries the response was YES. [2022-09-20 22:58:38,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38540 conditions, 17595 events. 4819/17595 cut-off events. For 16113/16168 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 182892 event pairs, 823 based on Foata normal form. 40/16578 useless extension candidates. Maximal degree in co-relation 38485. Up to 4583 conditions per place. [2022-09-20 22:58:38,436 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 646 selfloop transitions, 173 changer transitions 17/1082 dead transitions. [2022-09-20 22:58:38,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1082 transitions, 6476 flow [2022-09-20 22:58:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-09-20 22:58:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-09-20 22:58:38,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 10392 transitions. [2022-09-20 22:58:38,454 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6905901116427432 [2022-09-20 22:58:38,455 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 10392 transitions. [2022-09-20 22:58:38,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 10392 transitions. [2022-09-20 22:58:38,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:58:38,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 10392 transitions. [2022-09-20 22:58:38,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 273.4736842105263) internal successors, (10392), 38 states have internal predecessors, (10392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:38,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 396.0) internal successors, (15444), 39 states have internal predecessors, (15444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:38,503 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 396.0) internal successors, (15444), 39 states have internal predecessors, (15444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:38,503 INFO L175 Difference]: Start difference. First operand has 470 places, 546 transitions, 2416 flow. Second operand 38 states and 10392 transitions. [2022-09-20 22:58:38,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1082 transitions, 6476 flow [2022-09-20 22:58:38,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 1082 transitions, 6150 flow, removed 144 selfloop flow, removed 9 redundant places. [2022-09-20 22:58:38,659 INFO L231 Difference]: Finished difference. Result has 507 places, 596 transitions, 3194 flow [2022-09-20 22:58:38,660 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=2304, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3194, PETRI_PLACES=507, PETRI_TRANSITIONS=596} [2022-09-20 22:58:38,661 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 143 predicate places. [2022-09-20 22:58:38,661 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 596 transitions, 3194 flow [2022-09-20 22:58:38,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:38,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:58:38,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 22:58:38,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:58:38,667 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:58:38,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:58:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash -878946922, now seen corresponding path program 4 times [2022-09-20 22:58:38,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:58:38,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944590347] [2022-09-20 22:58:38,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:58:38,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:58:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:58:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:58:39,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:58:39,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944590347] [2022-09-20 22:58:39,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944590347] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:58:39,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:58:39,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 22:58:39,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291224550] [2022-09-20 22:58:39,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:58:39,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 22:58:39,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:58:39,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 22:58:39,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 22:58:39,061 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 22:58:39,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 596 transitions, 3194 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:39,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:58:39,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 22:58:39,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:58:44,662 INFO L130 PetriNetUnfolder]: 5252/19341 cut-off events. [2022-09-20 22:58:44,662 INFO L131 PetriNetUnfolder]: For 20559/20631 co-relation queries the response was YES. [2022-09-20 22:58:44,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43318 conditions, 19341 events. 5252/19341 cut-off events. For 20559/20631 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 204238 event pairs, 849 based on Foata normal form. 39/18199 useless extension candidates. Maximal degree in co-relation 43252. Up to 5413 conditions per place. [2022-09-20 22:58:44,857 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 690 selfloop transitions, 185 changer transitions 16/1137 dead transitions. [2022-09-20 22:58:44,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 1137 transitions, 7437 flow [2022-09-20 22:58:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-20 22:58:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-20 22:58:44,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 9353 transitions. [2022-09-20 22:58:44,867 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6946672608437314 [2022-09-20 22:58:44,867 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 9353 transitions. [2022-09-20 22:58:44,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 9353 transitions. [2022-09-20 22:58:44,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:58:44,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 9353 transitions. [2022-09-20 22:58:44,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 275.0882352941176) internal successors, (9353), 34 states have internal predecessors, (9353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:44,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 396.0) internal successors, (13860), 35 states have internal predecessors, (13860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:44,897 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 396.0) internal successors, (13860), 35 states have internal predecessors, (13860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:44,897 INFO L175 Difference]: Start difference. First operand has 507 places, 596 transitions, 3194 flow. Second operand 34 states and 9353 transitions. [2022-09-20 22:58:44,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 1137 transitions, 7437 flow [2022-09-20 22:58:45,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 518 places, 1137 transitions, 7068 flow, removed 29 selfloop flow, removed 14 redundant places. [2022-09-20 22:58:45,111 INFO L231 Difference]: Finished difference. Result has 545 places, 702 transitions, 4555 flow [2022-09-20 22:58:45,112 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=2988, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4555, PETRI_PLACES=545, PETRI_TRANSITIONS=702} [2022-09-20 22:58:45,112 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 181 predicate places. [2022-09-20 22:58:45,112 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 702 transitions, 4555 flow [2022-09-20 22:58:45,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:45,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:58:45,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 22:58:45,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:58:45,114 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:58:45,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:58:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1854680148, now seen corresponding path program 5 times [2022-09-20 22:58:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:58:45,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516385767] [2022-09-20 22:58:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:58:45,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:58:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:58:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:58:45,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:58:45,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516385767] [2022-09-20 22:58:45,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516385767] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:58:45,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:58:45,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 22:58:45,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012484678] [2022-09-20 22:58:45,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:58:45,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 22:58:45,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:58:45,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 22:58:45,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 22:58:45,467 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 22:58:45,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 702 transitions, 4555 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:45,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:58:45,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 22:58:45,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:58:52,539 INFO L130 PetriNetUnfolder]: 5605/21089 cut-off events. [2022-09-20 22:58:52,539 INFO L131 PetriNetUnfolder]: For 34187/34320 co-relation queries the response was YES. [2022-09-20 22:58:52,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52372 conditions, 21089 events. 5605/21089 cut-off events. For 34187/34320 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 227515 event pairs, 956 based on Foata normal form. 74/19851 useless extension candidates. Maximal degree in co-relation 52281. Up to 5416 conditions per place. [2022-09-20 22:58:52,900 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 777 selfloop transitions, 257 changer transitions 23/1303 dead transitions. [2022-09-20 22:58:52,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 1303 transitions, 10160 flow [2022-09-20 22:58:52,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-20 22:58:52,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-20 22:58:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 9416 transitions. [2022-09-20 22:58:52,909 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6993464052287581 [2022-09-20 22:58:52,909 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 9416 transitions. [2022-09-20 22:58:52,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 9416 transitions. [2022-09-20 22:58:52,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:58:52,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 9416 transitions. [2022-09-20 22:58:52,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 276.94117647058823) internal successors, (9416), 34 states have internal predecessors, (9416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:52,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 396.0) internal successors, (13860), 35 states have internal predecessors, (13860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:52,937 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 396.0) internal successors, (13860), 35 states have internal predecessors, (13860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:52,937 INFO L175 Difference]: Start difference. First operand has 545 places, 702 transitions, 4555 flow. Second operand 34 states and 9416 transitions. [2022-09-20 22:58:52,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 1303 transitions, 10160 flow [2022-09-20 22:58:53,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 1303 transitions, 9677 flow, removed 218 selfloop flow, removed 8 redundant places. [2022-09-20 22:58:53,369 INFO L231 Difference]: Finished difference. Result has 585 places, 793 transitions, 6090 flow [2022-09-20 22:58:53,370 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=4312, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6090, PETRI_PLACES=585, PETRI_TRANSITIONS=793} [2022-09-20 22:58:53,371 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 221 predicate places. [2022-09-20 22:58:53,371 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 793 transitions, 6090 flow [2022-09-20 22:58:53,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:53,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:58:53,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 22:58:53,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:58:53,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:58:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:58:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash -602269672, now seen corresponding path program 6 times [2022-09-20 22:58:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:58:53,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379654606] [2022-09-20 22:58:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:58:53,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:58:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:58:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:58:53,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:58:53,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379654606] [2022-09-20 22:58:53,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379654606] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:58:53,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:58:53,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 22:58:53,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848897542] [2022-09-20 22:58:53,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:58:53,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 22:58:53,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:58:53,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 22:58:53,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 22:58:53,842 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 22:58:53,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 793 transitions, 6090 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:58:53,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:58:53,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 22:58:53,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:59:01,946 INFO L130 PetriNetUnfolder]: 5849/21967 cut-off events. [2022-09-20 22:59:01,946 INFO L131 PetriNetUnfolder]: For 44870/45097 co-relation queries the response was YES. [2022-09-20 22:59:02,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57045 conditions, 21967 events. 5849/21967 cut-off events. For 44870/45097 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 239794 event pairs, 1220 based on Foata normal form. 135/20749 useless extension candidates. Maximal degree in co-relation 56939. Up to 5452 conditions per place. [2022-09-20 22:59:02,316 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 685 selfloop transitions, 358 changer transitions 17/1306 dead transitions. [2022-09-20 22:59:02,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 1306 transitions, 11256 flow [2022-09-20 22:59:02,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-20 22:59:02,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-09-20 22:59:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 11693 transitions. [2022-09-20 22:59:02,330 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6866925064599483 [2022-09-20 22:59:02,330 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 11693 transitions. [2022-09-20 22:59:02,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 11693 transitions. [2022-09-20 22:59:02,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:59:02,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 11693 transitions. [2022-09-20 22:59:02,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 271.93023255813955) internal successors, (11693), 43 states have internal predecessors, (11693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:02,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 396.0) internal successors, (17424), 44 states have internal predecessors, (17424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:02,366 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 396.0) internal successors, (17424), 44 states have internal predecessors, (17424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:02,366 INFO L175 Difference]: Start difference. First operand has 585 places, 793 transitions, 6090 flow. Second operand 43 states and 11693 transitions. [2022-09-20 22:59:02,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 1306 transitions, 11256 flow [2022-09-20 22:59:02,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 1306 transitions, 10790 flow, removed 128 selfloop flow, removed 14 redundant places. [2022-09-20 22:59:02,963 INFO L231 Difference]: Finished difference. Result has 628 places, 876 transitions, 7729 flow [2022-09-20 22:59:02,964 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=5778, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=7729, PETRI_PLACES=628, PETRI_TRANSITIONS=876} [2022-09-20 22:59:02,964 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 264 predicate places. [2022-09-20 22:59:02,964 INFO L495 AbstractCegarLoop]: Abstraction has has 628 places, 876 transitions, 7729 flow [2022-09-20 22:59:02,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:02,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:59:02,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 22:59:02,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:59:02,965 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:59:02,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:59:02,966 INFO L85 PathProgramCache]: Analyzing trace with hash 378434330, now seen corresponding path program 7 times [2022-09-20 22:59:02,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:59:02,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79885612] [2022-09-20 22:59:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:59:02,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:59:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:59:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:59:03,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:59:03,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79885612] [2022-09-20 22:59:03,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79885612] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:59:03,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:59:03,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 22:59:03,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500566873] [2022-09-20 22:59:03,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:59:03,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 22:59:03,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:59:03,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 22:59:03,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 22:59:03,286 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 22:59:03,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 876 transitions, 7729 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:03,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:59:03,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 22:59:03,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:59:12,456 INFO L130 PetriNetUnfolder]: 6367/24052 cut-off events. [2022-09-20 22:59:12,457 INFO L131 PetriNetUnfolder]: For 65285/65538 co-relation queries the response was YES. [2022-09-20 22:59:12,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66650 conditions, 24052 events. 6367/24052 cut-off events. For 65285/65538 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 268825 event pairs, 1014 based on Foata normal form. 163/22761 useless extension candidates. Maximal degree in co-relation 66529. Up to 5842 conditions per place. [2022-09-20 22:59:12,947 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 855 selfloop transitions, 359 changer transitions 15/1475 dead transitions. [2022-09-20 22:59:12,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 1475 transitions, 14341 flow [2022-09-20 22:59:12,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-20 22:59:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-09-20 22:59:12,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 10700 transitions. [2022-09-20 22:59:12,958 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6928256928256928 [2022-09-20 22:59:12,958 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 10700 transitions. [2022-09-20 22:59:12,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 10700 transitions. [2022-09-20 22:59:12,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:59:12,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 10700 transitions. [2022-09-20 22:59:12,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 274.35897435897436) internal successors, (10700), 39 states have internal predecessors, (10700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:12,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 396.0) internal successors, (15840), 40 states have internal predecessors, (15840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:12,993 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 396.0) internal successors, (15840), 40 states have internal predecessors, (15840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:12,993 INFO L175 Difference]: Start difference. First operand has 628 places, 876 transitions, 7729 flow. Second operand 39 states and 10700 transitions. [2022-09-20 22:59:12,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 1475 transitions, 14341 flow [2022-09-20 22:59:13,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 1475 transitions, 13646 flow, removed 120 selfloop flow, removed 18 redundant places. [2022-09-20 22:59:13,819 INFO L231 Difference]: Finished difference. Result has 664 places, 989 transitions, 9958 flow [2022-09-20 22:59:13,821 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=7228, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=876, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=9958, PETRI_PLACES=664, PETRI_TRANSITIONS=989} [2022-09-20 22:59:13,821 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 300 predicate places. [2022-09-20 22:59:13,821 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 989 transitions, 9958 flow [2022-09-20 22:59:13,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:13,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:59:13,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 22:59:13,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:59:13,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:59:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:59:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash 28724004, now seen corresponding path program 8 times [2022-09-20 22:59:13,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:59:13,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206523649] [2022-09-20 22:59:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:59:13,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:59:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:59:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:59:14,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:59:14,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206523649] [2022-09-20 22:59:14,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206523649] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:59:14,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:59:14,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 22:59:14,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249883259] [2022-09-20 22:59:14,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:59:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 22:59:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:59:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 22:59:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 22:59:14,146 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 22:59:14,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 989 transitions, 9958 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:14,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:59:14,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 22:59:14,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:59:24,906 INFO L130 PetriNetUnfolder]: 6765/25403 cut-off events. [2022-09-20 22:59:24,906 INFO L131 PetriNetUnfolder]: For 88203/88506 co-relation queries the response was YES. [2022-09-20 22:59:25,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75457 conditions, 25403 events. 6765/25403 cut-off events. For 88203/88506 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 288150 event pairs, 881 based on Foata normal form. 201/24097 useless extension candidates. Maximal degree in co-relation 75317. Up to 5794 conditions per place. [2022-09-20 22:59:25,628 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 828 selfloop transitions, 454 changer transitions 17/1545 dead transitions. [2022-09-20 22:59:25,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 702 places, 1545 transitions, 16629 flow [2022-09-20 22:59:25,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-09-20 22:59:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-09-20 22:59:25,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 11985 transitions. [2022-09-20 22:59:25,637 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6878443526170799 [2022-09-20 22:59:25,638 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 11985 transitions. [2022-09-20 22:59:25,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 11985 transitions. [2022-09-20 22:59:25,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:59:25,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 11985 transitions. [2022-09-20 22:59:25,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 272.3863636363636) internal successors, (11985), 44 states have internal predecessors, (11985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:25,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 396.0) internal successors, (17820), 45 states have internal predecessors, (17820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:25,666 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 396.0) internal successors, (17820), 45 states have internal predecessors, (17820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:25,666 INFO L175 Difference]: Start difference. First operand has 664 places, 989 transitions, 9958 flow. Second operand 44 states and 11985 transitions. [2022-09-20 22:59:25,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 702 places, 1545 transitions, 16629 flow [2022-09-20 22:59:26,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 690 places, 1545 transitions, 15865 flow, removed 248 selfloop flow, removed 12 redundant places. [2022-09-20 22:59:26,824 INFO L231 Difference]: Finished difference. Result has 712 places, 1084 transitions, 12068 flow [2022-09-20 22:59:26,825 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=9359, PETRI_DIFFERENCE_MINUEND_PLACES=647, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=989, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=12068, PETRI_PLACES=712, PETRI_TRANSITIONS=1084} [2022-09-20 22:59:26,825 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 348 predicate places. [2022-09-20 22:59:26,825 INFO L495 AbstractCegarLoop]: Abstraction has has 712 places, 1084 transitions, 12068 flow [2022-09-20 22:59:26,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:26,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:59:26,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 22:59:26,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 22:59:26,827 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:59:26,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:59:26,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1520139106, now seen corresponding path program 9 times [2022-09-20 22:59:26,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:59:26,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333647816] [2022-09-20 22:59:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:59:26,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:59:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:59:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:59:27,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:59:27,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333647816] [2022-09-20 22:59:27,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333647816] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:59:27,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:59:27,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 22:59:27,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491822186] [2022-09-20 22:59:27,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:59:27,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 22:59:27,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:59:27,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 22:59:27,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 22:59:27,146 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 22:59:27,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 1084 transitions, 12068 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:27,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:59:27,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 22:59:27,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:59:38,735 INFO L130 PetriNetUnfolder]: 7080/26790 cut-off events. [2022-09-20 22:59:38,735 INFO L131 PetriNetUnfolder]: For 113453/113789 co-relation queries the response was YES. [2022-09-20 22:59:39,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83067 conditions, 26790 events. 7080/26790 cut-off events. For 113453/113789 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 306759 event pairs, 1102 based on Foata normal form. 201/25369 useless extension candidates. Maximal degree in co-relation 82909. Up to 6951 conditions per place. [2022-09-20 22:59:39,542 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 969 selfloop transitions, 388 changer transitions 22/1625 dead transitions. [2022-09-20 22:59:39,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 1625 transitions, 18751 flow [2022-09-20 22:59:39,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-20 22:59:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-09-20 22:59:39,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 10921 transitions. [2022-09-20 22:59:39,551 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6894570707070707 [2022-09-20 22:59:39,551 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 10921 transitions. [2022-09-20 22:59:39,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 10921 transitions. [2022-09-20 22:59:39,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:59:39,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 10921 transitions. [2022-09-20 22:59:39,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 273.025) internal successors, (10921), 40 states have internal predecessors, (10921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:39,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 396.0) internal successors, (16236), 41 states have internal predecessors, (16236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:39,576 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 396.0) internal successors, (16236), 41 states have internal predecessors, (16236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:39,576 INFO L175 Difference]: Start difference. First operand has 712 places, 1084 transitions, 12068 flow. Second operand 40 states and 10921 transitions. [2022-09-20 22:59:39,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 1625 transitions, 18751 flow [2022-09-20 22:59:41,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 1625 transitions, 17954 flow, removed 191 selfloop flow, removed 16 redundant places. [2022-09-20 22:59:41,122 INFO L231 Difference]: Finished difference. Result has 755 places, 1185 transitions, 13910 flow [2022-09-20 22:59:41,123 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=11343, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1084, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=13910, PETRI_PLACES=755, PETRI_TRANSITIONS=1185} [2022-09-20 22:59:41,124 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 391 predicate places. [2022-09-20 22:59:41,124 INFO L495 AbstractCegarLoop]: Abstraction has has 755 places, 1185 transitions, 13910 flow [2022-09-20 22:59:41,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:41,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:59:41,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 22:59:41,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 22:59:41,126 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:59:41,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:59:41,126 INFO L85 PathProgramCache]: Analyzing trace with hash -69111986, now seen corresponding path program 10 times [2022-09-20 22:59:41,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:59:41,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494178988] [2022-09-20 22:59:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:59:41,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:59:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:59:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:59:41,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:59:41,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494178988] [2022-09-20 22:59:41,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494178988] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:59:41,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:59:41,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 22:59:41,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838830844] [2022-09-20 22:59:41,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:59:41,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 22:59:41,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:59:41,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 22:59:41,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 22:59:41,438 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 22:59:41,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 1185 transitions, 13910 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:41,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:59:41,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 22:59:41,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:59:55,219 INFO L130 PetriNetUnfolder]: 7335/27850 cut-off events. [2022-09-20 22:59:55,219 INFO L131 PetriNetUnfolder]: For 146229/146726 co-relation queries the response was YES. [2022-09-20 22:59:56,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92022 conditions, 27850 events. 7335/27850 cut-off events. For 146229/146726 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 321764 event pairs, 1059 based on Foata normal form. 304/26490 useless extension candidates. Maximal degree in co-relation 91841. Up to 6696 conditions per place. [2022-09-20 22:59:56,184 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 1060 selfloop transitions, 488 changer transitions 17/1811 dead transitions. [2022-09-20 22:59:56,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 794 places, 1811 transitions, 21807 flow [2022-09-20 22:59:56,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-09-20 22:59:56,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-09-20 22:59:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 12303 transitions. [2022-09-20 22:59:56,195 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6904040404040404 [2022-09-20 22:59:56,195 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 12303 transitions. [2022-09-20 22:59:56,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 12303 transitions. [2022-09-20 22:59:56,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:59:56,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 12303 transitions. [2022-09-20 22:59:56,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 273.4) internal successors, (12303), 45 states have internal predecessors, (12303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:56,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 396.0) internal successors, (18216), 46 states have internal predecessors, (18216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:56,224 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 396.0) internal successors, (18216), 46 states have internal predecessors, (18216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:56,225 INFO L175 Difference]: Start difference. First operand has 755 places, 1185 transitions, 13910 flow. Second operand 45 states and 12303 transitions. [2022-09-20 22:59:56,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 794 places, 1811 transitions, 21807 flow [2022-09-20 22:59:58,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 1811 transitions, 20952 flow, removed 261 selfloop flow, removed 13 redundant places. [2022-09-20 22:59:58,409 INFO L231 Difference]: Finished difference. Result has 802 places, 1278 transitions, 16044 flow [2022-09-20 22:59:58,411 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=13242, PETRI_DIFFERENCE_MINUEND_PLACES=737, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=758, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=16044, PETRI_PLACES=802, PETRI_TRANSITIONS=1278} [2022-09-20 22:59:58,411 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 438 predicate places. [2022-09-20 22:59:58,412 INFO L495 AbstractCegarLoop]: Abstraction has has 802 places, 1278 transitions, 16044 flow [2022-09-20 22:59:58,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:58,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:59:58,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 22:59:58,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 22:59:58,413 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:59:58,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:59:58,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1565157132, now seen corresponding path program 11 times [2022-09-20 22:59:58,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:59:58,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937526322] [2022-09-20 22:59:58,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:59:58,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:59:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:59:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:59:58,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:59:58,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937526322] [2022-09-20 22:59:58,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937526322] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:59:58,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:59:58,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 22:59:58,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050557747] [2022-09-20 22:59:58,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:59:58,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 22:59:58,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:59:58,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 22:59:58,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 22:59:58,811 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 22:59:58,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 802 places, 1278 transitions, 16044 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:59:58,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:59:58,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 22:59:58,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 23:00:14,435 INFO L130 PetriNetUnfolder]: 7766/29570 cut-off events. [2022-09-20 23:00:14,436 INFO L131 PetriNetUnfolder]: For 165373/165844 co-relation queries the response was YES. [2022-09-20 23:00:15,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99751 conditions, 29570 events. 7766/29570 cut-off events. For 165373/165844 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 347943 event pairs, 1151 based on Foata normal form. 284/28081 useless extension candidates. Maximal degree in co-relation 99553. Up to 7062 conditions per place. [2022-09-20 23:00:16,071 INFO L137 encePairwiseOnDemand]: 354/396 looper letters, 1017 selfloop transitions, 530 changer transitions 17/1810 dead transitions. [2022-09-20 23:00:16,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 836 places, 1810 transitions, 23820 flow [2022-09-20 23:00:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-20 23:00:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-09-20 23:00:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 11709 transitions. [2022-09-20 23:00:16,079 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6876321353065539 [2022-09-20 23:00:16,080 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 11709 transitions. [2022-09-20 23:00:16,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 11709 transitions. [2022-09-20 23:00:16,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 23:00:16,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 11709 transitions. [2022-09-20 23:00:16,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 272.30232558139534) internal successors, (11709), 43 states have internal predecessors, (11709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:00:16,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 396.0) internal successors, (17424), 44 states have internal predecessors, (17424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:00:16,111 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 396.0) internal successors, (17424), 44 states have internal predecessors, (17424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:00:16,111 INFO L175 Difference]: Start difference. First operand has 802 places, 1278 transitions, 16044 flow. Second operand 43 states and 11709 transitions. [2022-09-20 23:00:16,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 836 places, 1810 transitions, 23820 flow [2022-09-20 23:00:19,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 819 places, 1810 transitions, 22869 flow, removed 187 selfloop flow, removed 17 redundant places. [2022-09-20 23:00:19,296 INFO L231 Difference]: Finished difference. Result has 843 places, 1379 transitions, 18675 flow [2022-09-20 23:00:19,298 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=15303, PETRI_DIFFERENCE_MINUEND_PLACES=777, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=432, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=802, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=18675, PETRI_PLACES=843, PETRI_TRANSITIONS=1379} [2022-09-20 23:00:19,299 INFO L287 CegarLoopForPetriNet]: 364 programPoint places, 479 predicate places. [2022-09-20 23:00:19,299 INFO L495 AbstractCegarLoop]: Abstraction has has 843 places, 1379 transitions, 18675 flow [2022-09-20 23:00:19,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:00:19,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 23:00:19,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 1, 1, 1, 1, 1, 1] [2022-09-20 23:00:19,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 23:00:19,300 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 23:00:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 23:00:19,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1200585076, now seen corresponding path program 12 times [2022-09-20 23:00:19,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 23:00:19,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800506364] [2022-09-20 23:00:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 23:00:19,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 23:00:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 23:00:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 23:00:19,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 23:00:19,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800506364] [2022-09-20 23:00:19,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800506364] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 23:00:19,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 23:00:19,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 23:00:19,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189539198] [2022-09-20 23:00:19,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 23:00:19,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 23:00:19,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 23:00:19,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 23:00:19,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-09-20 23:00:19,583 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 396 [2022-09-20 23:00:19,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 1379 transitions, 18675 flow. Second operand has 19 states, 19 states have (on average 258.7368421052632) internal successors, (4916), 19 states have internal predecessors, (4916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 23:00:19,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 23:00:19,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 396 [2022-09-20 23:00:19,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand