/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 --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:38:01,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:38:01,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:38:01,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:38:01,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:38:01,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:38:01,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:38:01,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:38:01,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:38:01,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:38:01,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:38:01,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:38:01,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:38:01,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:38:01,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:38:01,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:38:01,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:38:01,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:38:01,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:38:01,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:38:01,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:38:01,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:38:01,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:38:01,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:38:01,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:38:01,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:38:01,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:38:01,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:38:01,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:38:01,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:38:01,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:38:01,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:38:01,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:38:01,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:38:01,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:38:01,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:38:01,360 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:38:01,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:38:01,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:38:01,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:38:01,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:38:01,362 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 [2022-12-12 12:38:01,393 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:38:01,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:38:01,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:38:01,395 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:38:01,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:38:01,396 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:38:01,397 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:38:01,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:38:01,397 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:38:01,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:38:01,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:38:01,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:38:01,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:38:01,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:38:01,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:38:01,399 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:38:01,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:38:01,399 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:38:01,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:38:01,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:38:01,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:38:01,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:38:01,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:38:01,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:38:01,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:38:01,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:38:01,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:38:01,400 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:38:01,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:38:01,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:38:01,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:38:01,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:38:01,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:38:01,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:38:01,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:38:01,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:38:01,749 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:38:01,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2022-12-12 12:38:02,840 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:38:03,052 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:38:03,053 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2022-12-12 12:38:03,059 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/183ed8768/2ca49213c8a4439695be06235ae37b93/FLAG535005a06 [2022-12-12 12:38:03,071 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/183ed8768/2ca49213c8a4439695be06235ae37b93 [2022-12-12 12:38:03,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:38:03,074 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:38:03,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:38:03,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:38:03,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:38:03,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb75715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03, skipping insertion in model container [2022-12-12 12:38:03,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:38:03,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:38:03,240 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-12-12 12:38:03,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:38:03,253 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:38:03,271 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-12-12 12:38:03,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:38:03,285 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:38:03,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03 WrapperNode [2022-12-12 12:38:03,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:38:03,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:38:03,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:38:03,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:38:03,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,342 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 122 [2022-12-12 12:38:03,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:38:03,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:38:03,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:38:03,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:38:03,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,376 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:38:03,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:38:03,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:38:03,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:38:03,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03" (1/1) ... [2022-12-12 12:38:03,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:38:03,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:38:03,419 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) [2022-12-12 12:38:03,434 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 [2022-12-12 12:38:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:38:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 12:38:03,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 12:38:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 12:38:03,464 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 12:38:03,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:38:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:38:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:38:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:38:03,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:38:03,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 12:38:03,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:38:03,467 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 12:38:03,605 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:38:03,607 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:38:03,812 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:38:03,820 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:38:03,820 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 12:38:03,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:38:03 BoogieIcfgContainer [2022-12-12 12:38:03,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:38:03,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:38:03,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:38:03,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:38:03,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:38:03" (1/3) ... [2022-12-12 12:38:03,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410c83e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:38:03, skipping insertion in model container [2022-12-12 12:38:03,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:38:03" (2/3) ... [2022-12-12 12:38:03,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@410c83e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:38:03, skipping insertion in model container [2022-12-12 12:38:03,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:38:03" (3/3) ... [2022-12-12 12:38:03,830 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2022-12-12 12:38:03,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:38:03,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 12:38:03,847 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:38:03,937 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 12:38:03,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 145 transitions, 306 flow [2022-12-12 12:38:04,026 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2022-12-12 12:38:04,027 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 12:38:04,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 143 events. 11/143 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 209 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2022-12-12 12:38:04,035 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 145 transitions, 306 flow [2022-12-12 12:38:04,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 135 transitions, 282 flow [2022-12-12 12:38:04,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:38:04,054 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;@51c456c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:38:04,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 12:38:04,087 INFO L130 PetriNetUnfolder]: 11/134 cut-off events. [2022-12-12 12:38:04,087 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 12:38:04,087 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:04,088 INFO L214 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] [2022-12-12 12:38:04,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:04,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:04,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1794281034, now seen corresponding path program 1 times [2022-12-12 12:38:04,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:04,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570915307] [2022-12-12 12:38:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:04,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:05,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:05,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570915307] [2022-12-12 12:38:05,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570915307] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:05,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:05,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:05,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123195139] [2022-12-12 12:38:05,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:05,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:05,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:05,107 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 145 [2022-12-12 12:38:05,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 135 transitions, 282 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:05,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:05,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 145 [2022-12-12 12:38:05,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:06,003 INFO L130 PetriNetUnfolder]: 156/798 cut-off events. [2022-12-12 12:38:06,003 INFO L131 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2022-12-12 12:38:06,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1261 conditions, 798 events. 156/798 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5353 event pairs, 24 based on Foata normal form. 44/766 useless extension candidates. Maximal degree in co-relation 907. Up to 78 conditions per place. [2022-12-12 12:38:06,010 INFO L137 encePairwiseOnDemand]: 116/145 looper letters, 110 selfloop transitions, 32 changer transitions 50/279 dead transitions. [2022-12-12 12:38:06,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 279 transitions, 996 flow [2022-12-12 12:38:06,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-12 12:38:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-12 12:38:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2823 transitions. [2022-12-12 12:38:06,029 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7210727969348659 [2022-12-12 12:38:06,032 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 26 predicate places. [2022-12-12 12:38:06,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 279 transitions, 996 flow [2022-12-12 12:38:06,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 279 transitions, 954 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-12 12:38:06,041 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 279 transitions, 954 flow [2022-12-12 12:38:06,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:06,042 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:06,042 INFO L214 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] [2022-12-12 12:38:06,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:38:06,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:06,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:06,044 INFO L85 PathProgramCache]: Analyzing trace with hash -2100184708, now seen corresponding path program 2 times [2022-12-12 12:38:06,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:06,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806717666] [2022-12-12 12:38:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:06,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:06,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:06,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:06,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806717666] [2022-12-12 12:38:06,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806717666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:06,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:06,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:06,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116108233] [2022-12-12 12:38:06,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:06,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:06,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:06,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:06,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:06,414 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 145 [2022-12-12 12:38:06,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 279 transitions, 954 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:06,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:06,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 145 [2022-12-12 12:38:06,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:06,912 INFO L130 PetriNetUnfolder]: 223/1166 cut-off events. [2022-12-12 12:38:06,912 INFO L131 PetriNetUnfolder]: For 219/523 co-relation queries the response was YES. [2022-12-12 12:38:06,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 1166 events. 223/1166 cut-off events. For 219/523 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 8216 event pairs, 21 based on Foata normal form. 20/1087 useless extension candidates. Maximal degree in co-relation 1407. Up to 255 conditions per place. [2022-12-12 12:38:06,922 INFO L137 encePairwiseOnDemand]: 126/145 looper letters, 229 selfloop transitions, 33 changer transitions 83/432 dead transitions. [2022-12-12 12:38:06,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 432 transitions, 2270 flow [2022-12-12 12:38:06,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:38:06,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:38:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1655 transitions. [2022-12-12 12:38:06,927 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7133620689655172 [2022-12-12 12:38:06,928 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 37 predicate places. [2022-12-12 12:38:06,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 432 transitions, 2270 flow [2022-12-12 12:38:06,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 432 transitions, 2162 flow, removed 54 selfloop flow, removed 0 redundant places. [2022-12-12 12:38:06,939 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 432 transitions, 2162 flow [2022-12-12 12:38:06,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:06,944 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:06,945 INFO L214 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] [2022-12-12 12:38:06,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 12:38:06,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:06,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash 241356572, now seen corresponding path program 3 times [2022-12-12 12:38:06,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:06,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807108227] [2022-12-12 12:38:06,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:06,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:07,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:07,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:07,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807108227] [2022-12-12 12:38:07,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807108227] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:07,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:07,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:07,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648006068] [2022-12-12 12:38:07,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:07,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:07,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:07,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:07,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:07,162 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 145 [2022-12-12 12:38:07,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 432 transitions, 2162 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:07,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:07,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 145 [2022-12-12 12:38:07,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:07,648 INFO L130 PetriNetUnfolder]: 227/1306 cut-off events. [2022-12-12 12:38:07,648 INFO L131 PetriNetUnfolder]: For 562/1156 co-relation queries the response was YES. [2022-12-12 12:38:07,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3366 conditions, 1306 events. 227/1306 cut-off events. For 562/1156 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9703 event pairs, 13 based on Foata normal form. 28/1233 useless extension candidates. Maximal degree in co-relation 1673. Up to 285 conditions per place. [2022-12-12 12:38:07,656 INFO L137 encePairwiseOnDemand]: 125/145 looper letters, 290 selfloop transitions, 25 changer transitions 117/519 dead transitions. [2022-12-12 12:38:07,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 519 transitions, 3551 flow [2022-12-12 12:38:07,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-12 12:38:07,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-12 12:38:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2073 transitions. [2022-12-12 12:38:07,661 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7148275862068966 [2022-12-12 12:38:07,662 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 56 predicate places. [2022-12-12 12:38:07,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 519 transitions, 3551 flow [2022-12-12 12:38:07,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 519 transitions, 3313 flow, removed 119 selfloop flow, removed 0 redundant places. [2022-12-12 12:38:07,671 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 519 transitions, 3313 flow [2022-12-12 12:38:07,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:07,671 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:07,672 INFO L214 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] [2022-12-12 12:38:07,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 12:38:07,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:07,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:07,673 INFO L85 PathProgramCache]: Analyzing trace with hash -224066830, now seen corresponding path program 4 times [2022-12-12 12:38:07,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:07,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550525722] [2022-12-12 12:38:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:07,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:07,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:07,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550525722] [2022-12-12 12:38:07,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550525722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:07,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:07,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:07,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948353891] [2022-12-12 12:38:07,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:07,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:07,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:07,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:07,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:07,982 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 145 [2022-12-12 12:38:07,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 519 transitions, 3313 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:07,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:07,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 145 [2022-12-12 12:38:07,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:08,491 INFO L130 PetriNetUnfolder]: 241/1441 cut-off events. [2022-12-12 12:38:08,491 INFO L131 PetriNetUnfolder]: For 1054/1975 co-relation queries the response was YES. [2022-12-12 12:38:08,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4332 conditions, 1441 events. 241/1441 cut-off events. For 1054/1975 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11157 event pairs, 17 based on Foata normal form. 32/1374 useless extension candidates. Maximal degree in co-relation 2135. Up to 286 conditions per place. [2022-12-12 12:38:08,500 INFO L137 encePairwiseOnDemand]: 127/145 looper letters, 307 selfloop transitions, 37 changer transitions 146/577 dead transitions. [2022-12-12 12:38:08,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 577 transitions, 4708 flow [2022-12-12 12:38:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 12:38:08,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 12:38:08,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1862 transitions. [2022-12-12 12:38:08,505 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7134099616858237 [2022-12-12 12:38:08,506 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 73 predicate places. [2022-12-12 12:38:08,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 577 transitions, 4708 flow [2022-12-12 12:38:08,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 577 transitions, 4145 flow, removed 269 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:08,520 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 577 transitions, 4145 flow [2022-12-12 12:38:08,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:08,521 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:08,521 INFO L214 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] [2022-12-12 12:38:08,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 12:38:08,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:08,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:08,522 INFO L85 PathProgramCache]: Analyzing trace with hash 464711588, now seen corresponding path program 5 times [2022-12-12 12:38:08,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:08,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031144156] [2022-12-12 12:38:08,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:08,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:08,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:08,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031144156] [2022-12-12 12:38:08,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031144156] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:08,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:08,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:08,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853370404] [2022-12-12 12:38:08,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:08,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:08,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:08,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:08,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:08,784 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 145 [2022-12-12 12:38:08,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 577 transitions, 4145 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:08,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:08,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 145 [2022-12-12 12:38:08,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:09,306 INFO L130 PetriNetUnfolder]: 244/1502 cut-off events. [2022-12-12 12:38:09,306 INFO L131 PetriNetUnfolder]: For 1466/2791 co-relation queries the response was YES. [2022-12-12 12:38:09,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4943 conditions, 1502 events. 244/1502 cut-off events. For 1466/2791 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11901 event pairs, 21 based on Foata normal form. 56/1455 useless extension candidates. Maximal degree in co-relation 1454. Up to 323 conditions per place. [2022-12-12 12:38:09,316 INFO L137 encePairwiseOnDemand]: 127/145 looper letters, 325 selfloop transitions, 34 changer transitions 177/623 dead transitions. [2022-12-12 12:38:09,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 623 transitions, 5635 flow [2022-12-12 12:38:09,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-12 12:38:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-12 12:38:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1962 transitions. [2022-12-12 12:38:09,320 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7121597096188748 [2022-12-12 12:38:09,321 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 90 predicate places. [2022-12-12 12:38:09,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 623 transitions, 5635 flow [2022-12-12 12:38:09,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 623 transitions, 4728 flow, removed 427 selfloop flow, removed 2 redundant places. [2022-12-12 12:38:09,336 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 623 transitions, 4728 flow [2022-12-12 12:38:09,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:09,336 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:09,337 INFO L214 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] [2022-12-12 12:38:09,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 12:38:09,337 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:09,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:09,337 INFO L85 PathProgramCache]: Analyzing trace with hash -362623624, now seen corresponding path program 6 times [2022-12-12 12:38:09,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:09,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939227985] [2022-12-12 12:38:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:09,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:09,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:09,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939227985] [2022-12-12 12:38:09,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939227985] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:09,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:09,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:09,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493638917] [2022-12-12 12:38:09,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:09,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:09,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:09,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:09,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:09,542 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 145 [2022-12-12 12:38:09,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 623 transitions, 4728 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:09,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:09,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 145 [2022-12-12 12:38:09,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:10,057 INFO L130 PetriNetUnfolder]: 285/1733 cut-off events. [2022-12-12 12:38:10,057 INFO L131 PetriNetUnfolder]: For 1659/2785 co-relation queries the response was YES. [2022-12-12 12:38:10,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5889 conditions, 1733 events. 285/1733 cut-off events. For 1659/2785 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14014 event pairs, 12 based on Foata normal form. 51/1683 useless extension candidates. Maximal degree in co-relation 1413. Up to 484 conditions per place. [2022-12-12 12:38:10,069 INFO L137 encePairwiseOnDemand]: 122/145 looper letters, 351 selfloop transitions, 60 changer transitions 207/705 dead transitions. [2022-12-12 12:38:10,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 705 transitions, 6718 flow [2022-12-12 12:38:10,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 12:38:10,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 12:38:10,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1870 transitions. [2022-12-12 12:38:10,074 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7164750957854407 [2022-12-12 12:38:10,075 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 105 predicate places. [2022-12-12 12:38:10,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 705 transitions, 6718 flow [2022-12-12 12:38:10,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 705 transitions, 6166 flow, removed 270 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:10,091 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 705 transitions, 6166 flow [2022-12-12 12:38:10,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:10,092 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:10,092 INFO L214 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] [2022-12-12 12:38:10,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 12:38:10,092 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:10,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:10,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1433610900, now seen corresponding path program 7 times [2022-12-12 12:38:10,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:10,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472018515] [2022-12-12 12:38:10,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:10,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:10,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:10,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472018515] [2022-12-12 12:38:10,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472018515] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:10,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:10,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:10,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534158879] [2022-12-12 12:38:10,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:10,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:10,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:10,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:10,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:10,344 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 145 [2022-12-12 12:38:10,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 705 transitions, 6166 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:10,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:10,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 145 [2022-12-12 12:38:10,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:11,055 INFO L130 PetriNetUnfolder]: 283/1809 cut-off events. [2022-12-12 12:38:11,055 INFO L131 PetriNetUnfolder]: For 2395/3796 co-relation queries the response was YES. [2022-12-12 12:38:11,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6827 conditions, 1809 events. 283/1809 cut-off events. For 2395/3796 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 14728 event pairs, 13 based on Foata normal form. 98/1809 useless extension candidates. Maximal degree in co-relation 1684. Up to 438 conditions per place. [2022-12-12 12:38:11,068 INFO L137 encePairwiseOnDemand]: 127/145 looper letters, 384 selfloop transitions, 38 changer transitions 249/758 dead transitions. [2022-12-12 12:38:11,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 758 transitions, 8105 flow [2022-12-12 12:38:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-12 12:38:11,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-12-12 12:38:11,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2158 transitions. [2022-12-12 12:38:11,071 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7087027914614121 [2022-12-12 12:38:11,072 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 124 predicate places. [2022-12-12 12:38:11,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 758 transitions, 8105 flow [2022-12-12 12:38:11,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 758 transitions, 7064 flow, removed 503 selfloop flow, removed 2 redundant places. [2022-12-12 12:38:11,094 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 758 transitions, 7064 flow [2022-12-12 12:38:11,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:11,094 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:11,094 INFO L214 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] [2022-12-12 12:38:11,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 12:38:11,095 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:11,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:11,098 INFO L85 PathProgramCache]: Analyzing trace with hash 949560412, now seen corresponding path program 8 times [2022-12-12 12:38:11,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:11,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455035802] [2022-12-12 12:38:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:11,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:11,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:11,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455035802] [2022-12-12 12:38:11,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455035802] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:11,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:11,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:11,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201613131] [2022-12-12 12:38:11,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:11,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:11,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:11,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:11,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:11,348 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 145 [2022-12-12 12:38:11,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 758 transitions, 7064 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:11,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:11,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 145 [2022-12-12 12:38:11,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:11,893 INFO L130 PetriNetUnfolder]: 284/1845 cut-off events. [2022-12-12 12:38:11,894 INFO L131 PetriNetUnfolder]: For 2812/4316 co-relation queries the response was YES. [2022-12-12 12:38:11,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 1845 events. 284/1845 cut-off events. For 2812/4316 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 15201 event pairs, 14 based on Foata normal form. 49/1794 useless extension candidates. Maximal degree in co-relation 3337. Up to 438 conditions per place. [2022-12-12 12:38:11,906 INFO L137 encePairwiseOnDemand]: 126/145 looper letters, 392 selfloop transitions, 28 changer transitions 274/781 dead transitions. [2022-12-12 12:38:11,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 781 transitions, 8713 flow [2022-12-12 12:38:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 12:38:11,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 12:38:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1862 transitions. [2022-12-12 12:38:11,909 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7134099616858237 [2022-12-12 12:38:11,909 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 139 predicate places. [2022-12-12 12:38:11,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 781 transitions, 8713 flow [2022-12-12 12:38:11,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 781 transitions, 7594 flow, removed 533 selfloop flow, removed 2 redundant places. [2022-12-12 12:38:11,938 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 781 transitions, 7594 flow [2022-12-12 12:38:11,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:11,939 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:11,939 INFO L214 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] [2022-12-12 12:38:11,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 12:38:11,939 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:11,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:11,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1917086752, now seen corresponding path program 9 times [2022-12-12 12:38:11,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:11,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99337715] [2022-12-12 12:38:11,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:11,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:12,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:12,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:12,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99337715] [2022-12-12 12:38:12,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99337715] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:12,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:12,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:12,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143390432] [2022-12-12 12:38:12,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:12,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:12,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:12,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:12,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:12,173 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 145 [2022-12-12 12:38:12,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 781 transitions, 7594 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:12,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:12,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 145 [2022-12-12 12:38:12,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:12,747 INFO L130 PetriNetUnfolder]: 285/1885 cut-off events. [2022-12-12 12:38:12,748 INFO L131 PetriNetUnfolder]: For 3290/4893 co-relation queries the response was YES. [2022-12-12 12:38:12,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7630 conditions, 1885 events. 285/1885 cut-off events. For 3290/4893 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 15775 event pairs, 13 based on Foata normal form. 59/1848 useless extension candidates. Maximal degree in co-relation 1803. Up to 410 conditions per place. [2022-12-12 12:38:12,760 INFO L137 encePairwiseOnDemand]: 127/145 looper letters, 387 selfloop transitions, 25 changer transitions 302/801 dead transitions. [2022-12-12 12:38:12,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 801 transitions, 9259 flow [2022-12-12 12:38:12,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 12:38:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 12:38:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1766 transitions. [2022-12-12 12:38:12,763 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7164300202839756 [2022-12-12 12:38:12,764 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 153 predicate places. [2022-12-12 12:38:12,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 801 transitions, 9259 flow [2022-12-12 12:38:12,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 801 transitions, 8010 flow, removed 587 selfloop flow, removed 2 redundant places. [2022-12-12 12:38:12,796 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 801 transitions, 8010 flow [2022-12-12 12:38:12,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:12,797 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:12,797 INFO L214 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] [2022-12-12 12:38:12,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 12:38:12,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:12,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:12,798 INFO L85 PathProgramCache]: Analyzing trace with hash -27035962, now seen corresponding path program 10 times [2022-12-12 12:38:12,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:12,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364806722] [2022-12-12 12:38:12,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:12,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:13,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:13,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364806722] [2022-12-12 12:38:13,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364806722] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:13,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:13,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:13,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470513926] [2022-12-12 12:38:13,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:13,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:13,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:13,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:13,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:13,016 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 145 [2022-12-12 12:38:13,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 801 transitions, 8010 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:13,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:13,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 145 [2022-12-12 12:38:13,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:13,550 INFO L130 PetriNetUnfolder]: 284/1900 cut-off events. [2022-12-12 12:38:13,550 INFO L131 PetriNetUnfolder]: For 3594/4955 co-relation queries the response was YES. [2022-12-12 12:38:13,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7877 conditions, 1900 events. 284/1900 cut-off events. For 3594/4955 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 15984 event pairs, 14 based on Foata normal form. 55/1857 useless extension candidates. Maximal degree in co-relation 3747. Up to 410 conditions per place. [2022-12-12 12:38:13,563 INFO L137 encePairwiseOnDemand]: 127/145 looper letters, 378 selfloop transitions, 25 changer transitions 328/818 dead transitions. [2022-12-12 12:38:13,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 818 transitions, 9702 flow [2022-12-12 12:38:13,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 12:38:13,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 12:38:13,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1763 transitions. [2022-12-12 12:38:13,566 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7152129817444219 [2022-12-12 12:38:13,566 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 167 predicate places. [2022-12-12 12:38:13,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 818 transitions, 9702 flow [2022-12-12 12:38:13,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 818 transitions, 8343 flow, removed 642 selfloop flow, removed 2 redundant places. [2022-12-12 12:38:13,605 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 818 transitions, 8343 flow [2022-12-12 12:38:13,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:13,606 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:13,606 INFO L214 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] [2022-12-12 12:38:13,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 12:38:13,606 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:13,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:13,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1975454040, now seen corresponding path program 11 times [2022-12-12 12:38:13,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:13,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019623886] [2022-12-12 12:38:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:13,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:13,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:13,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019623886] [2022-12-12 12:38:13,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019623886] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:13,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:13,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:13,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538925135] [2022-12-12 12:38:13,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:13,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:13,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:13,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:13,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:13,855 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 145 [2022-12-12 12:38:13,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 818 transitions, 8343 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:13,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:13,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 145 [2022-12-12 12:38:13,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:14,490 INFO L130 PetriNetUnfolder]: 284/1900 cut-off events. [2022-12-12 12:38:14,491 INFO L131 PetriNetUnfolder]: For 3874/5306 co-relation queries the response was YES. [2022-12-12 12:38:14,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7914 conditions, 1900 events. 284/1900 cut-off events. For 3874/5306 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 16007 event pairs, 18 based on Foata normal form. 48/1856 useless extension candidates. Maximal degree in co-relation 2067. Up to 410 conditions per place. [2022-12-12 12:38:14,508 INFO L137 encePairwiseOnDemand]: 127/145 looper letters, 357 selfloop transitions, 16 changer transitions 357/817 dead transitions. [2022-12-12 12:38:14,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 817 transitions, 9789 flow [2022-12-12 12:38:14,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-12 12:38:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-12 12:38:14,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2070 transitions. [2022-12-12 12:38:14,511 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7137931034482758 [2022-12-12 12:38:14,512 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 184 predicate places. [2022-12-12 12:38:14,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 817 transitions, 9789 flow [2022-12-12 12:38:14,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 817 transitions, 8308 flow, removed 696 selfloop flow, removed 3 redundant places. [2022-12-12 12:38:14,538 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 817 transitions, 8308 flow [2022-12-12 12:38:14,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:14,538 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:14,539 INFO L214 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] [2022-12-12 12:38:14,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 12:38:14,539 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:14,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:14,539 INFO L85 PathProgramCache]: Analyzing trace with hash -766733637, now seen corresponding path program 1 times [2022-12-12 12:38:14,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:14,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767158407] [2022-12-12 12:38:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:14,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:14,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:14,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767158407] [2022-12-12 12:38:14,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767158407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:14,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:14,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:14,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944106930] [2022-12-12 12:38:14,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:14,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:14,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:14,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:14,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:14,757 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:14,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 817 transitions, 8308 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:14,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:14,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:14,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:15,523 INFO L130 PetriNetUnfolder]: 413/2310 cut-off events. [2022-12-12 12:38:15,523 INFO L131 PetriNetUnfolder]: For 5369/6590 co-relation queries the response was YES. [2022-12-12 12:38:15,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9191 conditions, 2310 events. 413/2310 cut-off events. For 5369/6590 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 20119 event pairs, 57 based on Foata normal form. 42/2234 useless extension candidates. Maximal degree in co-relation 2953. Up to 704 conditions per place. [2022-12-12 12:38:15,536 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 336 selfloop transitions, 15 changer transitions 399/864 dead transitions. [2022-12-12 12:38:15,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 864 transitions, 10131 flow [2022-12-12 12:38:15,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-12 12:38:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-12 12:38:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2100 transitions. [2022-12-12 12:38:15,539 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2022-12-12 12:38:15,540 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 200 predicate places. [2022-12-12 12:38:15,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 864 transitions, 10131 flow [2022-12-12 12:38:15,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 864 transitions, 9801 flow, removed 165 selfloop flow, removed 0 redundant places. [2022-12-12 12:38:15,566 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 864 transitions, 9801 flow [2022-12-12 12:38:15,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:15,567 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:15,568 INFO L214 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] [2022-12-12 12:38:15,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 12:38:15,568 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1153546561, now seen corresponding path program 2 times [2022-12-12 12:38:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:15,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69378130] [2022-12-12 12:38:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:15,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:15,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69378130] [2022-12-12 12:38:15,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69378130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:15,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:15,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:15,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260563137] [2022-12-12 12:38:15,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:15,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:15,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:15,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:15,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:15,741 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:15,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 864 transitions, 9801 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:15,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:15,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:15,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:16,281 INFO L130 PetriNetUnfolder]: 313/1891 cut-off events. [2022-12-12 12:38:16,281 INFO L131 PetriNetUnfolder]: For 5144/6229 co-relation queries the response was YES. [2022-12-12 12:38:16,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8071 conditions, 1891 events. 313/1891 cut-off events. For 5144/6229 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 15851 event pairs, 21 based on Foata normal form. 39/1855 useless extension candidates. Maximal degree in co-relation 3246. Up to 585 conditions per place. [2022-12-12 12:38:16,292 INFO L137 encePairwiseOnDemand]: 129/145 looper letters, 260 selfloop transitions, 34 changer transitions 416/820 dead transitions. [2022-12-12 12:38:16,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 820 transitions, 10169 flow [2022-12-12 12:38:16,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 12:38:16,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 12:38:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1597 transitions. [2022-12-12 12:38:16,295 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7342528735632184 [2022-12-12 12:38:16,295 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 212 predicate places. [2022-12-12 12:38:16,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 820 transitions, 10169 flow [2022-12-12 12:38:16,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 820 transitions, 9607 flow, removed 281 selfloop flow, removed 0 redundant places. [2022-12-12 12:38:16,320 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 820 transitions, 9607 flow [2022-12-12 12:38:16,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:16,321 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:16,321 INFO L214 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] [2022-12-12 12:38:16,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-12 12:38:16,321 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:16,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:16,322 INFO L85 PathProgramCache]: Analyzing trace with hash 246228721, now seen corresponding path program 3 times [2022-12-12 12:38:16,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:16,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21875558] [2022-12-12 12:38:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:16,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:16,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:16,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21875558] [2022-12-12 12:38:16,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21875558] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:16,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:16,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:16,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495660983] [2022-12-12 12:38:16,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:16,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:16,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:16,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:16,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:16,488 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:16,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 820 transitions, 9607 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:16,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:16,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:16,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:17,090 INFO L130 PetriNetUnfolder]: 337/2034 cut-off events. [2022-12-12 12:38:17,091 INFO L131 PetriNetUnfolder]: For 6515/8167 co-relation queries the response was YES. [2022-12-12 12:38:17,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9489 conditions, 2034 events. 337/2034 cut-off events. For 6515/8167 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 17453 event pairs, 26 based on Foata normal form. 28/1983 useless extension candidates. Maximal degree in co-relation 3565. Up to 879 conditions per place. [2022-12-12 12:38:17,102 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 305 selfloop transitions, 26 changer transitions 450/891 dead transitions. [2022-12-12 12:38:17,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 891 transitions, 12015 flow [2022-12-12 12:38:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-12 12:38:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-12 12:38:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1995 transitions. [2022-12-12 12:38:17,105 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2022-12-12 12:38:17,106 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 230 predicate places. [2022-12-12 12:38:17,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 891 transitions, 12015 flow [2022-12-12 12:38:17,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 891 transitions, 11325 flow, removed 345 selfloop flow, removed 0 redundant places. [2022-12-12 12:38:17,133 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 891 transitions, 11325 flow [2022-12-12 12:38:17,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:17,134 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:17,134 INFO L214 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] [2022-12-12 12:38:17,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-12 12:38:17,134 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:17,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:17,135 INFO L85 PathProgramCache]: Analyzing trace with hash -188739361, now seen corresponding path program 4 times [2022-12-12 12:38:17,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:17,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35836716] [2022-12-12 12:38:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:17,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:17,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:17,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35836716] [2022-12-12 12:38:17,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35836716] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:17,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:17,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:17,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207448176] [2022-12-12 12:38:17,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:17,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:17,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:17,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:17,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:17,321 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:17,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 891 transitions, 11325 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:17,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:17,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:17,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:17,965 INFO L130 PetriNetUnfolder]: 342/2088 cut-off events. [2022-12-12 12:38:17,966 INFO L131 PetriNetUnfolder]: For 7604/9322 co-relation queries the response was YES. [2022-12-12 12:38:17,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10424 conditions, 2088 events. 342/2088 cut-off events. For 7604/9322 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 18234 event pairs, 22 based on Foata normal form. 26/2039 useless extension candidates. Maximal degree in co-relation 5284. Up to 933 conditions per place. [2022-12-12 12:38:17,975 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 300 selfloop transitions, 28 changer transitions 477/915 dead transitions. [2022-12-12 12:38:17,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 915 transitions, 13232 flow [2022-12-12 12:38:17,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 12:38:17,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 12:38:17,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1876 transitions. [2022-12-12 12:38:17,978 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7187739463601532 [2022-12-12 12:38:17,978 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 247 predicate places. [2022-12-12 12:38:17,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 915 transitions, 13232 flow [2022-12-12 12:38:18,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 915 transitions, 11859 flow, removed 653 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:18,009 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 915 transitions, 11859 flow [2022-12-12 12:38:18,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:18,009 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:18,009 INFO L214 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] [2022-12-12 12:38:18,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-12 12:38:18,010 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:18,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash 771481191, now seen corresponding path program 5 times [2022-12-12 12:38:18,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:18,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92570970] [2022-12-12 12:38:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:18,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:18,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:18,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92570970] [2022-12-12 12:38:18,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92570970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:18,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:18,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:18,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649588806] [2022-12-12 12:38:18,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:18,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:18,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:18,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:18,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:18,167 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:18,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 915 transitions, 11859 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:18,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:18,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:18,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:18,822 INFO L130 PetriNetUnfolder]: 345/2147 cut-off events. [2022-12-12 12:38:18,822 INFO L131 PetriNetUnfolder]: For 8435/10211 co-relation queries the response was YES. [2022-12-12 12:38:18,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10795 conditions, 2147 events. 345/2147 cut-off events. For 8435/10211 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 18964 event pairs, 28 based on Foata normal form. 20/2089 useless extension candidates. Maximal degree in co-relation 4885. Up to 971 conditions per place. [2022-12-12 12:38:18,834 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 296 selfloop transitions, 27 changer transitions 505/938 dead transitions. [2022-12-12 12:38:18,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 938 transitions, 13793 flow [2022-12-12 12:38:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:38:18,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:38:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1670 transitions. [2022-12-12 12:38:18,837 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7198275862068966 [2022-12-12 12:38:18,838 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 261 predicate places. [2022-12-12 12:38:18,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 938 transitions, 13793 flow [2022-12-12 12:38:18,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 938 transitions, 12636 flow, removed 545 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:18,876 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 938 transitions, 12636 flow [2022-12-12 12:38:18,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:18,877 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:18,877 INFO L214 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] [2022-12-12 12:38:18,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-12 12:38:18,877 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:18,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:18,877 INFO L85 PathProgramCache]: Analyzing trace with hash -485346193, now seen corresponding path program 6 times [2022-12-12 12:38:18,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:18,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525340384] [2022-12-12 12:38:18,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:18,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:19,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:19,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:19,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525340384] [2022-12-12 12:38:19,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525340384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:19,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:19,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:19,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001871050] [2022-12-12 12:38:19,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:19,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:19,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:19,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:19,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:19,053 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:19,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 938 transitions, 12636 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:19,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:19,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:19,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:19,725 INFO L130 PetriNetUnfolder]: 345/2104 cut-off events. [2022-12-12 12:38:19,726 INFO L131 PetriNetUnfolder]: For 8931/10804 co-relation queries the response was YES. [2022-12-12 12:38:19,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11051 conditions, 2104 events. 345/2104 cut-off events. For 8931/10804 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 18490 event pairs, 25 based on Foata normal form. 25/2056 useless extension candidates. Maximal degree in co-relation 4421. Up to 959 conditions per place. [2022-12-12 12:38:19,736 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 275 selfloop transitions, 16 changer transitions 534/935 dead transitions. [2022-12-12 12:38:19,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 935 transitions, 14229 flow [2022-12-12 12:38:19,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:38:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:38:19,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1671 transitions. [2022-12-12 12:38:19,739 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7202586206896552 [2022-12-12 12:38:19,739 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 275 predicate places. [2022-12-12 12:38:19,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 935 transitions, 14229 flow [2022-12-12 12:38:19,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 935 transitions, 12634 flow, removed 764 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:19,784 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 935 transitions, 12634 flow [2022-12-12 12:38:19,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:19,784 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:19,784 INFO L214 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] [2022-12-12 12:38:19,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-12 12:38:19,785 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:19,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:19,785 INFO L85 PathProgramCache]: Analyzing trace with hash -345477743, now seen corresponding path program 7 times [2022-12-12 12:38:19,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:19,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191661262] [2022-12-12 12:38:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:19,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:19,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:19,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:19,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191661262] [2022-12-12 12:38:19,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191661262] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:19,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:19,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:19,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397218359] [2022-12-12 12:38:19,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:19,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:19,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:19,969 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:19,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 935 transitions, 12634 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:19,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:19,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:19,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:20,588 INFO L130 PetriNetUnfolder]: 352/2161 cut-off events. [2022-12-12 12:38:20,588 INFO L131 PetriNetUnfolder]: For 9598/11584 co-relation queries the response was YES. [2022-12-12 12:38:20,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11459 conditions, 2161 events. 352/2161 cut-off events. For 9598/11584 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 19241 event pairs, 23 based on Foata normal form. 37/2120 useless extension candidates. Maximal degree in co-relation 4421. Up to 763 conditions per place. [2022-12-12 12:38:20,600 INFO L137 encePairwiseOnDemand]: 131/145 looper letters, 256 selfloop transitions, 32 changer transitions 567/963 dead transitions. [2022-12-12 12:38:20,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 963 transitions, 14825 flow [2022-12-12 12:38:20,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-12 12:38:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-12 12:38:20,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2012 transitions. [2022-12-12 12:38:20,604 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7303085299455535 [2022-12-12 12:38:20,604 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 292 predicate places. [2022-12-12 12:38:20,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 963 transitions, 14825 flow [2022-12-12 12:38:20,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 963 transitions, 12250 flow, removed 1283 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:20,656 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 963 transitions, 12250 flow [2022-12-12 12:38:20,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:20,657 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:20,657 INFO L214 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] [2022-12-12 12:38:20,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-12 12:38:20,657 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash -820022493, now seen corresponding path program 8 times [2022-12-12 12:38:20,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:20,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799668449] [2022-12-12 12:38:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:20,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:20,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:20,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799668449] [2022-12-12 12:38:20,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799668449] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:20,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:20,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:20,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369201296] [2022-12-12 12:38:20,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:20,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:20,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:20,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:20,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:20,809 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:20,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 963 transitions, 12250 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:20,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:20,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:20,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:21,426 INFO L130 PetriNetUnfolder]: 369/2272 cut-off events. [2022-12-12 12:38:21,427 INFO L131 PetriNetUnfolder]: For 8931/10615 co-relation queries the response was YES. [2022-12-12 12:38:21,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11388 conditions, 2272 events. 369/2272 cut-off events. For 8931/10615 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20464 event pairs, 27 based on Foata normal form. 31/2227 useless extension candidates. Maximal degree in co-relation 4373. Up to 585 conditions per place. [2022-12-12 12:38:21,439 INFO L137 encePairwiseOnDemand]: 131/145 looper letters, 274 selfloop transitions, 31 changer transitions 594/1007 dead transitions. [2022-12-12 12:38:21,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1007 transitions, 14607 flow [2022-12-12 12:38:21,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 12:38:21,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 12:38:21,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1896 transitions. [2022-12-12 12:38:21,442 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7264367816091954 [2022-12-12 12:38:21,442 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 308 predicate places. [2022-12-12 12:38:21,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 1007 transitions, 14607 flow [2022-12-12 12:38:21,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 1007 transitions, 12806 flow, removed 896 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:21,496 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 1007 transitions, 12806 flow [2022-12-12 12:38:21,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:21,496 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:21,496 INFO L214 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] [2022-12-12 12:38:21,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-12 12:38:21,497 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:21,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:21,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1500600627, now seen corresponding path program 9 times [2022-12-12 12:38:21,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:21,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442064765] [2022-12-12 12:38:21,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:21,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:21,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:21,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442064765] [2022-12-12 12:38:21,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442064765] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:21,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:21,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:21,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360556184] [2022-12-12 12:38:21,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:21,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:21,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:21,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:21,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:21,660 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:21,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 1007 transitions, 12806 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:21,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:21,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:21,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:22,285 INFO L130 PetriNetUnfolder]: 372/2312 cut-off events. [2022-12-12 12:38:22,285 INFO L131 PetriNetUnfolder]: For 9196/11139 co-relation queries the response was YES. [2022-12-12 12:38:22,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11708 conditions, 2312 events. 372/2312 cut-off events. For 9196/11139 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 21007 event pairs, 26 based on Foata normal form. 26/2262 useless extension candidates. Maximal degree in co-relation 4621. Up to 606 conditions per place. [2022-12-12 12:38:22,296 INFO L137 encePairwiseOnDemand]: 131/145 looper letters, 271 selfloop transitions, 31 changer transitions 621/1031 dead transitions. [2022-12-12 12:38:22,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 1031 transitions, 14976 flow [2022-12-12 12:38:22,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:38:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:38:22,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1690 transitions. [2022-12-12 12:38:22,299 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.728448275862069 [2022-12-12 12:38:22,300 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 322 predicate places. [2022-12-12 12:38:22,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 1031 transitions, 14976 flow [2022-12-12 12:38:22,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1031 transitions, 13529 flow, removed 719 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:22,351 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 1031 transitions, 13529 flow [2022-12-12 12:38:22,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:22,351 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:22,351 INFO L214 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] [2022-12-12 12:38:22,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-12 12:38:22,352 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:22,352 INFO L85 PathProgramCache]: Analyzing trace with hash -236960457, now seen corresponding path program 10 times [2022-12-12 12:38:22,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:22,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794792814] [2022-12-12 12:38:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:22,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:22,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:22,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:22,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794792814] [2022-12-12 12:38:22,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794792814] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:22,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:22,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:22,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695016418] [2022-12-12 12:38:22,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:22,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:22,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:22,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:22,513 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:22,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1031 transitions, 13529 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:22,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:22,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:22,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:23,111 INFO L130 PetriNetUnfolder]: 371/2350 cut-off events. [2022-12-12 12:38:23,111 INFO L131 PetriNetUnfolder]: For 10182/12579 co-relation queries the response was YES. [2022-12-12 12:38:23,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12224 conditions, 2350 events. 371/2350 cut-off events. For 10182/12579 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 21609 event pairs, 21 based on Foata normal form. 26/2299 useless extension candidates. Maximal degree in co-relation 4874. Up to 611 conditions per place. [2022-12-12 12:38:23,124 INFO L137 encePairwiseOnDemand]: 131/145 looper letters, 265 selfloop transitions, 21 changer transitions 651/1044 dead transitions. [2022-12-12 12:38:23,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 1044 transitions, 15601 flow [2022-12-12 12:38:23,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:38:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:38:23,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1691 transitions. [2022-12-12 12:38:23,131 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7288793103448276 [2022-12-12 12:38:23,132 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 336 predicate places. [2022-12-12 12:38:23,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 1044 transitions, 15601 flow [2022-12-12 12:38:23,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1044 transitions, 14192 flow, removed 700 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:23,187 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 1044 transitions, 14192 flow [2022-12-12 12:38:23,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:23,188 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:23,188 INFO L214 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] [2022-12-12 12:38:23,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-12 12:38:23,188 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:23,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:23,189 INFO L85 PathProgramCache]: Analyzing trace with hash -376088593, now seen corresponding path program 11 times [2022-12-12 12:38:23,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:23,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529975037] [2022-12-12 12:38:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:23,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:23,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:23,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529975037] [2022-12-12 12:38:23,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529975037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:23,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:23,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:23,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439012042] [2022-12-12 12:38:23,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:23,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:23,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:23,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:23,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:23,328 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:23,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 1044 transitions, 14192 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:23,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:23,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:23,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:23,962 INFO L130 PetriNetUnfolder]: 376/2383 cut-off events. [2022-12-12 12:38:23,963 INFO L131 PetriNetUnfolder]: For 11237/13773 co-relation queries the response was YES. [2022-12-12 12:38:23,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12882 conditions, 2383 events. 376/2383 cut-off events. For 11237/13773 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 22018 event pairs, 21 based on Foata normal form. 135/2443 useless extension candidates. Maximal degree in co-relation 5131. Up to 584 conditions per place. [2022-12-12 12:38:23,974 INFO L137 encePairwiseOnDemand]: 131/145 looper letters, 256 selfloop transitions, 31 changer transitions 686/1079 dead transitions. [2022-12-12 12:38:23,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 1079 transitions, 16728 flow [2022-12-12 12:38:23,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-12 12:38:23,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-12 12:38:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2116 transitions. [2022-12-12 12:38:23,977 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7296551724137931 [2022-12-12 12:38:23,977 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 354 predicate places. [2022-12-12 12:38:23,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 1079 transitions, 16728 flow [2022-12-12 12:38:24,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1079 transitions, 14753 flow, removed 983 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:24,034 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 1079 transitions, 14753 flow [2022-12-12 12:38:24,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:24,034 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:24,034 INFO L214 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] [2022-12-12 12:38:24,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-12 12:38:24,035 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:24,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:24,035 INFO L85 PathProgramCache]: Analyzing trace with hash 677491085, now seen corresponding path program 12 times [2022-12-12 12:38:24,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:24,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16043525] [2022-12-12 12:38:24,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:24,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:24,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:24,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16043525] [2022-12-12 12:38:24,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16043525] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:24,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:24,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:24,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784032851] [2022-12-12 12:38:24,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:24,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:24,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:24,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:24,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:24,172 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:24,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 1079 transitions, 14753 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:24,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:24,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:24,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:24,776 INFO L130 PetriNetUnfolder]: 378/2418 cut-off events. [2022-12-12 12:38:24,777 INFO L131 PetriNetUnfolder]: For 11633/14384 co-relation queries the response was YES. [2022-12-12 12:38:24,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13037 conditions, 2418 events. 378/2418 cut-off events. For 11633/14384 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 22537 event pairs, 24 based on Foata normal form. 100/2443 useless extension candidates. Maximal degree in co-relation 4958. Up to 584 conditions per place. [2022-12-12 12:38:24,789 INFO L137 encePairwiseOnDemand]: 131/145 looper letters, 257 selfloop transitions, 21 changer transitions 714/1098 dead transitions. [2022-12-12 12:38:24,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1098 transitions, 17104 flow [2022-12-12 12:38:24,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 12:38:24,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 12:38:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1894 transitions. [2022-12-12 12:38:24,792 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7256704980842912 [2022-12-12 12:38:24,793 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 370 predicate places. [2022-12-12 12:38:24,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 1098 transitions, 17104 flow [2022-12-12 12:38:24,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1098 transitions, 15379 flow, removed 858 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:24,880 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 1098 transitions, 15379 flow [2022-12-12 12:38:24,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:24,880 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:24,881 INFO L214 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] [2022-12-12 12:38:24,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-12 12:38:24,881 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:24,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:24,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1778746645, now seen corresponding path program 13 times [2022-12-12 12:38:24,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:24,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073286538] [2022-12-12 12:38:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:24,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:25,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:25,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:25,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073286538] [2022-12-12 12:38:25,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073286538] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:25,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:25,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:25,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285995398] [2022-12-12 12:38:25,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:25,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:25,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:25,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:25,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:25,035 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:25,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1098 transitions, 15379 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:25,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:25,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:25,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:25,647 INFO L130 PetriNetUnfolder]: 381/2465 cut-off events. [2022-12-12 12:38:25,647 INFO L131 PetriNetUnfolder]: For 12067/14210 co-relation queries the response was YES. [2022-12-12 12:38:25,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13532 conditions, 2465 events. 381/2465 cut-off events. For 12067/14210 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 23086 event pairs, 21 based on Foata normal form. 66/2454 useless extension candidates. Maximal degree in co-relation 5411. Up to 584 conditions per place. [2022-12-12 12:38:25,659 INFO L137 encePairwiseOnDemand]: 131/145 looper letters, 252 selfloop transitions, 20 changer transitions 740/1118 dead transitions. [2022-12-12 12:38:25,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 1118 transitions, 17848 flow [2022-12-12 12:38:25,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 12:38:25,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 12:38:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1794 transitions. [2022-12-12 12:38:25,668 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.727789046653144 [2022-12-12 12:38:25,668 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 385 predicate places. [2022-12-12 12:38:25,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 1118 transitions, 17848 flow [2022-12-12 12:38:25,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 1118 transitions, 15515 flow, removed 1162 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:25,731 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 1118 transitions, 15515 flow [2022-12-12 12:38:25,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:25,732 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:25,732 INFO L214 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] [2022-12-12 12:38:25,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-12 12:38:25,732 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:25,732 INFO L85 PathProgramCache]: Analyzing trace with hash -303886873, now seen corresponding path program 14 times [2022-12-12 12:38:25,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:25,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387011860] [2022-12-12 12:38:25,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:25,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:25,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:25,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387011860] [2022-12-12 12:38:25,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387011860] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:25,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:25,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:25,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748725072] [2022-12-12 12:38:25,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:25,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:25,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:25,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:25,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:25,906 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:25,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 1118 transitions, 15515 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:25,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:25,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:25,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:26,482 INFO L130 PetriNetUnfolder]: 386/2514 cut-off events. [2022-12-12 12:38:26,483 INFO L131 PetriNetUnfolder]: For 12566/14620 co-relation queries the response was YES. [2022-12-12 12:38:26,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13643 conditions, 2514 events. 386/2514 cut-off events. For 12566/14620 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 23703 event pairs, 26 based on Foata normal form. 87/2523 useless extension candidates. Maximal degree in co-relation 7095. Up to 584 conditions per place. [2022-12-12 12:38:26,493 INFO L137 encePairwiseOnDemand]: 131/145 looper letters, 252 selfloop transitions, 15 changer transitions 769/1142 dead transitions. [2022-12-12 12:38:26,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1142 transitions, 18108 flow [2022-12-12 12:38:26,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 12:38:26,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 12:38:26,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1797 transitions. [2022-12-12 12:38:26,495 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7290060851926977 [2022-12-12 12:38:26,496 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 400 predicate places. [2022-12-12 12:38:26,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1142 transitions, 18108 flow [2022-12-12 12:38:26,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1142 transitions, 16019 flow, removed 1040 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:26,563 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 1142 transitions, 16019 flow [2022-12-12 12:38:26,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:26,563 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:26,563 INFO L214 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] [2022-12-12 12:38:26,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-12 12:38:26,564 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:26,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:26,564 INFO L85 PathProgramCache]: Analyzing trace with hash -219635177, now seen corresponding path program 15 times [2022-12-12 12:38:26,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:26,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751573174] [2022-12-12 12:38:26,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:26,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:26,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:26,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751573174] [2022-12-12 12:38:26,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751573174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:26,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:26,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:26,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166708244] [2022-12-12 12:38:26,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:26,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:26,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:26,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:26,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:26,702 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:26,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 1142 transitions, 16019 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:26,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:26,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:26,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:27,405 INFO L130 PetriNetUnfolder]: 386/2510 cut-off events. [2022-12-12 12:38:27,405 INFO L131 PetriNetUnfolder]: For 12256/14353 co-relation queries the response was YES. [2022-12-12 12:38:27,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13533 conditions, 2510 events. 386/2510 cut-off events. For 12256/14353 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 23788 event pairs, 24 based on Foata normal form. 82/2520 useless extension candidates. Maximal degree in co-relation 4835. Up to 585 conditions per place. [2022-12-12 12:38:27,414 INFO L137 encePairwiseOnDemand]: 131/145 looper letters, 228 selfloop transitions, 7 changer transitions 799/1136 dead transitions. [2022-12-12 12:38:27,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 1136 transitions, 17899 flow [2022-12-12 12:38:27,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:38:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:38:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1695 transitions. [2022-12-12 12:38:27,417 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7306034482758621 [2022-12-12 12:38:27,417 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 414 predicate places. [2022-12-12 12:38:27,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 1136 transitions, 17899 flow [2022-12-12 12:38:27,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 1136 transitions, 16026 flow, removed 932 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:27,475 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 1136 transitions, 16026 flow [2022-12-12 12:38:27,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:27,476 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:27,476 INFO L214 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] [2022-12-12 12:38:27,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-12 12:38:27,476 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:27,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:27,476 INFO L85 PathProgramCache]: Analyzing trace with hash 204489063, now seen corresponding path program 1 times [2022-12-12 12:38:27,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:27,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685749470] [2022-12-12 12:38:27,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:27,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:27,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:27,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685749470] [2022-12-12 12:38:27,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685749470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:27,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:27,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:27,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322098339] [2022-12-12 12:38:27,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:27,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:27,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:27,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:27,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:27,608 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:27,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 1136 transitions, 16026 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:27,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:27,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:27,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:28,290 INFO L130 PetriNetUnfolder]: 423/2580 cut-off events. [2022-12-12 12:38:28,291 INFO L131 PetriNetUnfolder]: For 11468/12316 co-relation queries the response was YES. [2022-12-12 12:38:28,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12930 conditions, 2580 events. 423/2580 cut-off events. For 11468/12316 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 24504 event pairs, 60 based on Foata normal form. 35/2552 useless extension candidates. Maximal degree in co-relation 4461. Up to 992 conditions per place. [2022-12-12 12:38:28,301 INFO L137 encePairwiseOnDemand]: 130/145 looper letters, 116 selfloop transitions, 22 changer transitions 833/1083 dead transitions. [2022-12-12 12:38:28,301 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 1083 transitions, 16461 flow [2022-12-12 12:38:28,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-12 12:38:28,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-12 12:38:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2009 transitions. [2022-12-12 12:38:28,303 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7292196007259528 [2022-12-12 12:38:28,304 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 430 predicate places. [2022-12-12 12:38:28,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 1083 transitions, 16461 flow [2022-12-12 12:38:28,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 1083 transitions, 15299 flow, removed 576 selfloop flow, removed 2 redundant places. [2022-12-12 12:38:28,341 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 1083 transitions, 15299 flow [2022-12-12 12:38:28,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:28,342 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:28,342 INFO L214 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] [2022-12-12 12:38:28,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-12 12:38:28,342 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:28,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:28,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1784555331, now seen corresponding path program 2 times [2022-12-12 12:38:28,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:28,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423474504] [2022-12-12 12:38:28,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:28,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:28,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:28,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423474504] [2022-12-12 12:38:28,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423474504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:28,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:28,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:28,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894630920] [2022-12-12 12:38:28,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:28,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:28,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:28,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:28,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:28,483 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:28,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 1083 transitions, 15299 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:28,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:28,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:28,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:29,063 INFO L130 PetriNetUnfolder]: 434/2594 cut-off events. [2022-12-12 12:38:29,063 INFO L131 PetriNetUnfolder]: For 12876/14198 co-relation queries the response was YES. [2022-12-12 12:38:29,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13770 conditions, 2594 events. 434/2594 cut-off events. For 12876/14198 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 24633 event pairs, 75 based on Foata normal form. 57/2590 useless extension candidates. Maximal degree in co-relation 4768. Up to 992 conditions per place. [2022-12-12 12:38:29,077 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 120 selfloop transitions, 27 changer transitions 853/1112 dead transitions. [2022-12-12 12:38:29,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 1112 transitions, 17685 flow [2022-12-12 12:38:29,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 12:38:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 12:38:29,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1787 transitions. [2022-12-12 12:38:29,079 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.724949290060852 [2022-12-12 12:38:29,080 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 444 predicate places. [2022-12-12 12:38:29,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 1112 transitions, 17685 flow [2022-12-12 12:38:29,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 1112 transitions, 15699 flow, removed 990 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:29,146 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 1112 transitions, 15699 flow [2022-12-12 12:38:29,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:29,146 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:29,146 INFO L214 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] [2022-12-12 12:38:29,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-12 12:38:29,147 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:29,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:29,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1771828919, now seen corresponding path program 3 times [2022-12-12 12:38:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:29,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284006882] [2022-12-12 12:38:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:29,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:29,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:29,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284006882] [2022-12-12 12:38:29,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284006882] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:29,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:29,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:29,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027485124] [2022-12-12 12:38:29,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:29,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:29,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:29,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:29,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:29,305 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:29,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 1112 transitions, 15699 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:29,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:29,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:29,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:29,864 INFO L130 PetriNetUnfolder]: 438/2654 cut-off events. [2022-12-12 12:38:29,865 INFO L131 PetriNetUnfolder]: For 13188/14157 co-relation queries the response was YES. [2022-12-12 12:38:29,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13947 conditions, 2654 events. 438/2654 cut-off events. For 13188/14157 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 25455 event pairs, 69 based on Foata normal form. 45/2636 useless extension candidates. Maximal degree in co-relation 7268. Up to 993 conditions per place. [2022-12-12 12:38:29,874 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 117 selfloop transitions, 16 changer transitions 877/1122 dead transitions. [2022-12-12 12:38:29,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 1122 transitions, 17799 flow [2022-12-12 12:38:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-12 12:38:29,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-12 12:38:29,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1483 transitions. [2022-12-12 12:38:29,875 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7305418719211823 [2022-12-12 12:38:29,876 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 456 predicate places. [2022-12-12 12:38:29,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 1122 transitions, 17799 flow [2022-12-12 12:38:29,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 1122 transitions, 16001 flow, removed 896 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:29,930 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 1122 transitions, 16001 flow [2022-12-12 12:38:29,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:29,930 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:29,930 INFO L214 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] [2022-12-12 12:38:29,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-12 12:38:29,931 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:29,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:29,931 INFO L85 PathProgramCache]: Analyzing trace with hash 476346175, now seen corresponding path program 4 times [2022-12-12 12:38:29,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:29,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466978856] [2022-12-12 12:38:29,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:29,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:30,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:30,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:30,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466978856] [2022-12-12 12:38:30,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466978856] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:30,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:30,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:30,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354522761] [2022-12-12 12:38:30,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:30,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:30,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:30,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:30,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:30,071 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:30,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 1122 transitions, 16001 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:30,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:30,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:30,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:30,668 INFO L130 PetriNetUnfolder]: 462/2778 cut-off events. [2022-12-12 12:38:30,668 INFO L131 PetriNetUnfolder]: For 14344/15456 co-relation queries the response was YES. [2022-12-12 12:38:30,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15036 conditions, 2778 events. 462/2778 cut-off events. For 14344/15456 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 27010 event pairs, 84 based on Foata normal form. 25/2741 useless extension candidates. Maximal degree in co-relation 6026. Up to 992 conditions per place. [2022-12-12 12:38:30,677 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 152 selfloop transitions, 20 changer transitions 904/1188 dead transitions. [2022-12-12 12:38:30,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 1188 transitions, 19399 flow [2022-12-12 12:38:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 12:38:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 12:38:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1903 transitions. [2022-12-12 12:38:30,679 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7291187739463602 [2022-12-12 12:38:30,679 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 472 predicate places. [2022-12-12 12:38:30,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 1188 transitions, 19399 flow [2022-12-12 12:38:30,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 1188 transitions, 17587 flow, removed 903 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:30,725 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 1188 transitions, 17587 flow [2022-12-12 12:38:30,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:30,725 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:30,725 INFO L214 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] [2022-12-12 12:38:30,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-12 12:38:30,725 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:30,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:30,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1464835089, now seen corresponding path program 5 times [2022-12-12 12:38:30,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:30,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729656887] [2022-12-12 12:38:30,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:30,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:30,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:30,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729656887] [2022-12-12 12:38:30,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729656887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:30,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:30,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:30,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774514983] [2022-12-12 12:38:30,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:30,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:30,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:30,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:30,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:30,873 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:30,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 1188 transitions, 17587 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:30,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:30,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:30,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:31,479 INFO L130 PetriNetUnfolder]: 481/2886 cut-off events. [2022-12-12 12:38:31,479 INFO L131 PetriNetUnfolder]: For 15702/16793 co-relation queries the response was YES. [2022-12-12 12:38:31,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15933 conditions, 2886 events. 481/2886 cut-off events. For 15702/16793 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 28447 event pairs, 79 based on Foata normal form. 37/2859 useless extension candidates. Maximal degree in co-relation 8776. Up to 992 conditions per place. [2022-12-12 12:38:31,494 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 165 selfloop transitions, 23 changer transitions 925/1225 dead transitions. [2022-12-12 12:38:31,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 1225 transitions, 20498 flow [2022-12-12 12:38:31,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:38:31,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:38:31,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1687 transitions. [2022-12-12 12:38:31,496 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7271551724137931 [2022-12-12 12:38:31,496 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 486 predicate places. [2022-12-12 12:38:31,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 1225 transitions, 20498 flow [2022-12-12 12:38:31,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 1225 transitions, 18348 flow, removed 1072 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:31,549 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 1225 transitions, 18348 flow [2022-12-12 12:38:31,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:31,550 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:31,550 INFO L214 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] [2022-12-12 12:38:31,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-12 12:38:31,550 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:31,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:31,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1989287673, now seen corresponding path program 6 times [2022-12-12 12:38:31,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:31,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077304901] [2022-12-12 12:38:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:31,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:31,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:31,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077304901] [2022-12-12 12:38:31,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077304901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:31,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:31,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:31,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471492372] [2022-12-12 12:38:31,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:31,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:31,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:31,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:31,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:31,702 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:31,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 1225 transitions, 18348 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:31,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:31,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:31,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:32,288 INFO L130 PetriNetUnfolder]: 488/2946 cut-off events. [2022-12-12 12:38:32,289 INFO L131 PetriNetUnfolder]: For 16324/17382 co-relation queries the response was YES. [2022-12-12 12:38:32,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16256 conditions, 2946 events. 488/2946 cut-off events. For 16324/17382 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 29118 event pairs, 80 based on Foata normal form. 45/2927 useless extension candidates. Maximal degree in co-relation 7229. Up to 993 conditions per place. [2022-12-12 12:38:32,300 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 162 selfloop transitions, 23 changer transitions 946/1243 dead transitions. [2022-12-12 12:38:32,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 1243 transitions, 20903 flow [2022-12-12 12:38:32,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-12 12:38:32,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-12 12:38:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1689 transitions. [2022-12-12 12:38:32,302 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7280172413793103 [2022-12-12 12:38:32,302 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 500 predicate places. [2022-12-12 12:38:32,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 1243 transitions, 20903 flow [2022-12-12 12:38:32,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 1243 transitions, 18861 flow, removed 1018 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:32,369 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 1243 transitions, 18861 flow [2022-12-12 12:38:32,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:32,369 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:32,369 INFO L214 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] [2022-12-12 12:38:32,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-12 12:38:32,370 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:32,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:32,370 INFO L85 PathProgramCache]: Analyzing trace with hash 111726611, now seen corresponding path program 7 times [2022-12-12 12:38:32,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:32,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929592619] [2022-12-12 12:38:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:32,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:32,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:32,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929592619] [2022-12-12 12:38:32,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929592619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:32,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:32,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:32,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3109032] [2022-12-12 12:38:32,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:32,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:32,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:32,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:32,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:32,501 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:32,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 1243 transitions, 18861 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:32,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:32,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:32,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:33,066 INFO L130 PetriNetUnfolder]: 487/2959 cut-off events. [2022-12-12 12:38:33,067 INFO L131 PetriNetUnfolder]: For 16972/17975 co-relation queries the response was YES. [2022-12-12 12:38:33,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16468 conditions, 2959 events. 487/2959 cut-off events. For 16972/17975 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 29387 event pairs, 80 based on Foata normal form. 36/2930 useless extension candidates. Maximal degree in co-relation 8946. Up to 993 conditions per place. [2022-12-12 12:38:33,082 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 157 selfloop transitions, 12 changer transitions 968/1249 dead transitions. [2022-12-12 12:38:33,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 1249 transitions, 21207 flow [2022-12-12 12:38:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 12:38:33,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 12:38:33,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1586 transitions. [2022-12-12 12:38:33,084 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7291954022988506 [2022-12-12 12:38:33,084 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 513 predicate places. [2022-12-12 12:38:33,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 1249 transitions, 21207 flow [2022-12-12 12:38:33,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 1249 transitions, 19203 flow, removed 999 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:33,146 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 1249 transitions, 19203 flow [2022-12-12 12:38:33,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:33,146 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:33,146 INFO L214 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] [2022-12-12 12:38:33,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-12 12:38:33,147 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:33,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1980871769, now seen corresponding path program 8 times [2022-12-12 12:38:33,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:33,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985331627] [2022-12-12 12:38:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:33,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:33,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:33,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985331627] [2022-12-12 12:38:33,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985331627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:33,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:33,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:33,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886417639] [2022-12-12 12:38:33,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:33,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:33,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:33,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:33,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:33,283 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:33,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 1249 transitions, 19203 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:33,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:33,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:33,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:33,901 INFO L130 PetriNetUnfolder]: 494/3014 cut-off events. [2022-12-12 12:38:33,901 INFO L131 PetriNetUnfolder]: For 17991/19027 co-relation queries the response was YES. [2022-12-12 12:38:33,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17007 conditions, 3014 events. 494/3014 cut-off events. For 17991/19027 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 30156 event pairs, 89 based on Foata normal form. 29/2978 useless extension candidates. Maximal degree in co-relation 8840. Up to 992 conditions per place. [2022-12-12 12:38:33,912 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 147 selfloop transitions, 24 changer transitions 986/1269 dead transitions. [2022-12-12 12:38:33,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 1269 transitions, 21967 flow [2022-12-12 12:38:33,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 12:38:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 12:38:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1585 transitions. [2022-12-12 12:38:33,913 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.728735632183908 [2022-12-12 12:38:33,913 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 526 predicate places. [2022-12-12 12:38:33,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 1269 transitions, 21967 flow [2022-12-12 12:38:33,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 1269 transitions, 19427 flow, removed 1267 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:33,971 INFO L495 AbstractCegarLoop]: Abstraction has has 656 places, 1269 transitions, 19427 flow [2022-12-12 12:38:33,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:33,971 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:33,971 INFO L214 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] [2022-12-12 12:38:33,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-12 12:38:33,972 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:33,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:33,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1683612691, now seen corresponding path program 9 times [2022-12-12 12:38:33,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:33,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292735316] [2022-12-12 12:38:33,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:33,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:34,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:34,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292735316] [2022-12-12 12:38:34,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292735316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:34,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:34,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:34,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787259171] [2022-12-12 12:38:34,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:34,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:34,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:34,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:34,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:34,105 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:34,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 1269 transitions, 19427 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:34,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:34,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:34,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:34,777 INFO L130 PetriNetUnfolder]: 496/3043 cut-off events. [2022-12-12 12:38:34,777 INFO L131 PetriNetUnfolder]: For 18590/19700 co-relation queries the response was YES. [2022-12-12 12:38:34,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17034 conditions, 3043 events. 496/3043 cut-off events. For 18590/19700 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 30639 event pairs, 82 based on Foata normal form. 31/3009 useless extension candidates. Maximal degree in co-relation 8019. Up to 992 conditions per place. [2022-12-12 12:38:34,791 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 144 selfloop transitions, 17 changer transitions 1007/1280 dead transitions. [2022-12-12 12:38:34,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 1280 transitions, 21976 flow [2022-12-12 12:38:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 12:38:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 12:38:34,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1788 transitions. [2022-12-12 12:38:34,793 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7253549695740366 [2022-12-12 12:38:34,793 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 541 predicate places. [2022-12-12 12:38:34,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 1280 transitions, 21976 flow [2022-12-12 12:38:34,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 671 places, 1280 transitions, 19678 flow, removed 1146 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:34,921 INFO L495 AbstractCegarLoop]: Abstraction has has 671 places, 1280 transitions, 19678 flow [2022-12-12 12:38:34,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:34,921 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:34,921 INFO L214 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] [2022-12-12 12:38:34,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-12 12:38:34,921 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:34,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:34,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1444889413, now seen corresponding path program 10 times [2022-12-12 12:38:34,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:34,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913067355] [2022-12-12 12:38:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:34,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:35,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:35,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913067355] [2022-12-12 12:38:35,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913067355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:35,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:35,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:35,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553077343] [2022-12-12 12:38:35,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:35,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:35,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:35,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:35,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:35,057 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:35,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 1280 transitions, 19678 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:35,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:35,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:35,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:35,737 INFO L130 PetriNetUnfolder]: 496/3038 cut-off events. [2022-12-12 12:38:35,738 INFO L131 PetriNetUnfolder]: For 18475/19567 co-relation queries the response was YES. [2022-12-12 12:38:35,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16774 conditions, 3038 events. 496/3038 cut-off events. For 18475/19567 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 30612 event pairs, 84 based on Foata normal form. 35/3010 useless extension candidates. Maximal degree in co-relation 7750. Up to 992 conditions per place. [2022-12-12 12:38:35,749 INFO L137 encePairwiseOnDemand]: 132/145 looper letters, 121 selfloop transitions, 5 changer transitions 1039/1269 dead transitions. [2022-12-12 12:38:35,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 1269 transitions, 21468 flow [2022-12-12 12:38:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 12:38:35,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 12:38:35,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1587 transitions. [2022-12-12 12:38:35,751 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7296551724137931 [2022-12-12 12:38:35,751 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 554 predicate places. [2022-12-12 12:38:35,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 1269 transitions, 21468 flow [2022-12-12 12:38:35,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 1269 transitions, 19220 flow, removed 1121 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:35,811 INFO L495 AbstractCegarLoop]: Abstraction has has 684 places, 1269 transitions, 19220 flow [2022-12-12 12:38:35,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:35,811 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:35,811 INFO L214 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] [2022-12-12 12:38:35,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-12 12:38:35,811 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:35,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1804534787, now seen corresponding path program 11 times [2022-12-12 12:38:35,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:35,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240304338] [2022-12-12 12:38:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:35,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:35,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:35,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240304338] [2022-12-12 12:38:35,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240304338] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:35,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:35,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:35,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036739275] [2022-12-12 12:38:35,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:35,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:35,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:35,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:35,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:35,943 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:35,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 1269 transitions, 19220 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:35,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:35,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:35,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:36,748 INFO L130 PetriNetUnfolder]: 569/3329 cut-off events. [2022-12-12 12:38:36,748 INFO L131 PetriNetUnfolder]: For 21309/22419 co-relation queries the response was YES. [2022-12-12 12:38:36,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19068 conditions, 3329 events. 569/3329 cut-off events. For 21309/22419 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 34054 event pairs, 80 based on Foata normal form. 70/3324 useless extension candidates. Maximal degree in co-relation 8859. Up to 1266 conditions per place. [2022-12-12 12:38:36,766 INFO L137 encePairwiseOnDemand]: 127/145 looper letters, 133 selfloop transitions, 22 changer transitions 1160/1419 dead transitions. [2022-12-12 12:38:36,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 1419 transitions, 24624 flow [2022-12-12 12:38:36,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 12:38:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 12:38:36,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1908 transitions. [2022-12-12 12:38:36,768 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7310344827586207 [2022-12-12 12:38:36,769 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 570 predicate places. [2022-12-12 12:38:36,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 1419 transitions, 24624 flow [2022-12-12 12:38:36,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 701 places, 1419 transitions, 23370 flow, removed 627 selfloop flow, removed 0 redundant places. [2022-12-12 12:38:36,856 INFO L495 AbstractCegarLoop]: Abstraction has has 701 places, 1419 transitions, 23370 flow [2022-12-12 12:38:36,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:36,856 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:36,856 INFO L214 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] [2022-12-12 12:38:36,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-12 12:38:36,857 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:36,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:36,857 INFO L85 PathProgramCache]: Analyzing trace with hash -571786707, now seen corresponding path program 12 times [2022-12-12 12:38:36,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:36,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310568312] [2022-12-12 12:38:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:36,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:37,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:37,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310568312] [2022-12-12 12:38:37,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310568312] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:37,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:37,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:37,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84024203] [2022-12-12 12:38:37,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:37,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:37,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:37,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:37,005 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:37,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 1419 transitions, 23370 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:37,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:37,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:37,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:37,898 INFO L130 PetriNetUnfolder]: 568/3310 cut-off events. [2022-12-12 12:38:37,898 INFO L131 PetriNetUnfolder]: For 23348/24515 co-relation queries the response was YES. [2022-12-12 12:38:37,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19673 conditions, 3310 events. 568/3310 cut-off events. For 23348/24515 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 33816 event pairs, 64 based on Foata normal form. 55/3291 useless extension candidates. Maximal degree in co-relation 9304. Up to 952 conditions per place. [2022-12-12 12:38:37,912 INFO L137 encePairwiseOnDemand]: 133/145 looper letters, 94 selfloop transitions, 11 changer transitions 1199/1405 dead transitions. [2022-12-12 12:38:37,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 719 places, 1405 transitions, 25160 flow [2022-12-12 12:38:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-12 12:38:37,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-12 12:38:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1988 transitions. [2022-12-12 12:38:37,921 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7215970961887477 [2022-12-12 12:38:37,921 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 588 predicate places. [2022-12-12 12:38:37,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 719 places, 1405 transitions, 25160 flow [2022-12-12 12:38:38,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 719 places, 1405 transitions, 23680 flow, removed 740 selfloop flow, removed 0 redundant places. [2022-12-12 12:38:38,022 INFO L495 AbstractCegarLoop]: Abstraction has has 719 places, 1405 transitions, 23680 flow [2022-12-12 12:38:38,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:38,022 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:38,022 INFO L214 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] [2022-12-12 12:38:38,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-12 12:38:38,023 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:38,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1322925751, now seen corresponding path program 13 times [2022-12-12 12:38:38,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:38,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329538914] [2022-12-12 12:38:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:38,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:38,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:38,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:38,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329538914] [2022-12-12 12:38:38,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329538914] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:38,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:38,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:38,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636029672] [2022-12-12 12:38:38,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:38,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:38,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:38,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:38,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:38,166 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:38,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 719 places, 1405 transitions, 23680 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:38,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:38,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:38,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:39,008 INFO L130 PetriNetUnfolder]: 571/3356 cut-off events. [2022-12-12 12:38:39,008 INFO L131 PetriNetUnfolder]: For 25693/27008 co-relation queries the response was YES. [2022-12-12 12:38:39,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20846 conditions, 3356 events. 571/3356 cut-off events. For 25693/27008 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 34541 event pairs, 74 based on Foata normal form. 68/3351 useless extension candidates. Maximal degree in co-relation 9037. Up to 1292 conditions per place. [2022-12-12 12:38:39,021 INFO L137 encePairwiseOnDemand]: 127/145 looper letters, 86 selfloop transitions, 15 changer transitions 1220/1422 dead transitions. [2022-12-12 12:38:39,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 735 places, 1422 transitions, 26661 flow [2022-12-12 12:38:39,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 12:38:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 12:38:39,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1788 transitions. [2022-12-12 12:38:39,022 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7253549695740366 [2022-12-12 12:38:39,023 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 604 predicate places. [2022-12-12 12:38:39,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 735 places, 1422 transitions, 26661 flow [2022-12-12 12:38:39,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 1422 transitions, 24805 flow, removed 860 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:39,096 INFO L495 AbstractCegarLoop]: Abstraction has has 734 places, 1422 transitions, 24805 flow [2022-12-12 12:38:39,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:39,096 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:39,096 INFO L214 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] [2022-12-12 12:38:39,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-12 12:38:39,097 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:39,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:39,097 INFO L85 PathProgramCache]: Analyzing trace with hash -157373149, now seen corresponding path program 14 times [2022-12-12 12:38:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:39,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058310896] [2022-12-12 12:38:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:39,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:39,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:39,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058310896] [2022-12-12 12:38:39,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058310896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:39,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:39,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:39,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195000963] [2022-12-12 12:38:39,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:39,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:39,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:39,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:39,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:39,250 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:39,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 734 places, 1422 transitions, 24805 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:39,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:39,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:39,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:40,129 INFO L130 PetriNetUnfolder]: 575/3391 cut-off events. [2022-12-12 12:38:40,129 INFO L131 PetriNetUnfolder]: For 27813/29216 co-relation queries the response was YES. [2022-12-12 12:38:40,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21714 conditions, 3391 events. 575/3391 cut-off events. For 27813/29216 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 35063 event pairs, 74 based on Foata normal form. 34/3349 useless extension candidates. Maximal degree in co-relation 9301. Up to 1491 conditions per place. [2022-12-12 12:38:40,143 INFO L137 encePairwiseOnDemand]: 133/145 looper letters, 83 selfloop transitions, 11 changer transitions 1241/1436 dead transitions. [2022-12-12 12:38:40,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 1436 transitions, 27691 flow [2022-12-12 12:38:40,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 12:38:40,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 12:38:40,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1567 transitions. [2022-12-12 12:38:40,148 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7204597701149426 [2022-12-12 12:38:40,149 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 617 predicate places. [2022-12-12 12:38:40,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 1436 transitions, 27691 flow [2022-12-12 12:38:40,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 748 places, 1436 transitions, 26089 flow, removed 801 selfloop flow, removed 0 redundant places. [2022-12-12 12:38:40,261 INFO L495 AbstractCegarLoop]: Abstraction has has 748 places, 1436 transitions, 26089 flow [2022-12-12 12:38:40,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:40,262 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:40,262 INFO L214 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] [2022-12-12 12:38:40,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-12 12:38:40,262 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:40,263 INFO L85 PathProgramCache]: Analyzing trace with hash 885516353, now seen corresponding path program 15 times [2022-12-12 12:38:40,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:40,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106453493] [2022-12-12 12:38:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:40,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:40,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:40,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:40,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106453493] [2022-12-12 12:38:40,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106453493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:40,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:40,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-12 12:38:40,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636262529] [2022-12-12 12:38:40,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:40,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 12:38:40,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:40,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 12:38:40,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-12 12:38:40,410 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 145 [2022-12-12 12:38:40,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 748 places, 1436 transitions, 26089 flow. Second operand has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:40,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:40,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 145 [2022-12-12 12:38:40,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:41,310 INFO L130 PetriNetUnfolder]: 575/3379 cut-off events. [2022-12-12 12:38:41,310 INFO L131 PetriNetUnfolder]: For 31395/32976 co-relation queries the response was YES. [2022-12-12 12:38:41,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22358 conditions, 3379 events. 575/3379 cut-off events. For 31395/32976 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 35021 event pairs, 75 based on Foata normal form. 39/3348 useless extension candidates. Maximal degree in co-relation 9311. Up to 1478 conditions per place. [2022-12-12 12:38:41,322 INFO L137 encePairwiseOnDemand]: 133/145 looper letters, 64 selfloop transitions, 0 changer transitions 1263/1425 dead transitions. [2022-12-12 12:38:41,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 762 places, 1425 transitions, 28211 flow [2022-12-12 12:38:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 12:38:41,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 12:38:41,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1566 transitions. [2022-12-12 12:38:41,324 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.72 [2022-12-12 12:38:41,325 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 631 predicate places. [2022-12-12 12:38:41,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 762 places, 1425 transitions, 28211 flow [2022-12-12 12:38:41,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 761 places, 1425 transitions, 26620 flow, removed 743 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:41,423 INFO L495 AbstractCegarLoop]: Abstraction has has 761 places, 1425 transitions, 26620 flow [2022-12-12 12:38:41,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 101.9) internal successors, (1019), 10 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:41,424 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:41,424 INFO L214 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] [2022-12-12 12:38:41,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-12 12:38:41,424 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:41,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:41,424 INFO L85 PathProgramCache]: Analyzing trace with hash 775287318, now seen corresponding path program 1 times [2022-12-12 12:38:41,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:41,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810078543] [2022-12-12 12:38:41,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:41,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:42,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:42,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810078543] [2022-12-12 12:38:42,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810078543] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:42,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:42,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:38:42,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97612324] [2022-12-12 12:38:42,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:42,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:38:42,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:42,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:38:42,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:38:42,104 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:38:42,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 761 places, 1425 transitions, 26620 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:42,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:42,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:38:42,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:46,001 INFO L130 PetriNetUnfolder]: 1390/5163 cut-off events. [2022-12-12 12:38:46,001 INFO L131 PetriNetUnfolder]: For 59623/61275 co-relation queries the response was YES. [2022-12-12 12:38:46,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33609 conditions, 5163 events. 1390/5163 cut-off events. For 59623/61275 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 50191 event pairs, 320 based on Foata normal form. 16/5068 useless extension candidates. Maximal degree in co-relation 19288. Up to 2572 conditions per place. [2022-12-12 12:38:46,021 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 244 selfloop transitions, 35 changer transitions 1319/1677 dead transitions. [2022-12-12 12:38:46,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 1677 transitions, 34234 flow [2022-12-12 12:38:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-12 12:38:46,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-12 12:38:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3869 transitions. [2022-12-12 12:38:46,024 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5677182685253118 [2022-12-12 12:38:46,024 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 676 predicate places. [2022-12-12 12:38:46,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 1677 transitions, 34234 flow [2022-12-12 12:38:46,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 806 places, 1677 transitions, 29068 flow, removed 2582 selfloop flow, removed 1 redundant places. [2022-12-12 12:38:46,134 INFO L495 AbstractCegarLoop]: Abstraction has has 806 places, 1677 transitions, 29068 flow [2022-12-12 12:38:46,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:46,135 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:46,135 INFO L214 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] [2022-12-12 12:38:46,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-12 12:38:46,135 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:46,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:46,135 INFO L85 PathProgramCache]: Analyzing trace with hash 682030136, now seen corresponding path program 2 times [2022-12-12 12:38:46,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:46,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287774367] [2022-12-12 12:38:46,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:46,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:46,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:46,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287774367] [2022-12-12 12:38:46,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287774367] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:46,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:46,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:38:46,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511594706] [2022-12-12 12:38:46,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:46,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:38:46,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:46,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:38:46,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:38:46,830 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:38:46,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 806 places, 1677 transitions, 29068 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:46,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:46,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:38:46,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:52,558 INFO L130 PetriNetUnfolder]: 1454/5349 cut-off events. [2022-12-12 12:38:52,558 INFO L131 PetriNetUnfolder]: For 52163/54337 co-relation queries the response was YES. [2022-12-12 12:38:52,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34602 conditions, 5349 events. 1454/5349 cut-off events. For 52163/54337 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 51485 event pairs, 307 based on Foata normal form. 10/5267 useless extension candidates. Maximal degree in co-relation 20279. Up to 2599 conditions per place. [2022-12-12 12:38:52,581 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 343 selfloop transitions, 122 changer transitions 1488/2029 dead transitions. [2022-12-12 12:38:52,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 874 places, 2029 transitions, 37466 flow [2022-12-12 12:38:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-12 12:38:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-12-12 12:38:52,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 5625 transitions. [2022-12-12 12:38:52,586 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5622188905547226 [2022-12-12 12:38:52,586 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 743 predicate places. [2022-12-12 12:38:52,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 874 places, 2029 transitions, 37466 flow [2022-12-12 12:38:52,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 2029 transitions, 32715 flow, removed 2105 selfloop flow, removed 5 redundant places. [2022-12-12 12:38:52,747 INFO L495 AbstractCegarLoop]: Abstraction has has 869 places, 2029 transitions, 32715 flow [2022-12-12 12:38:52,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:52,748 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:52,748 INFO L214 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] [2022-12-12 12:38:52,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-12 12:38:52,748 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash 724142054, now seen corresponding path program 3 times [2022-12-12 12:38:52,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:52,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848862560] [2022-12-12 12:38:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:52,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:38:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:38:53,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:38:53,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848862560] [2022-12-12 12:38:53,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848862560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:38:53,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:38:53,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:38:53,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877699745] [2022-12-12 12:38:53,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:38:53,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:38:53,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:38:53,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:38:53,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:38:53,405 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:38:53,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 869 places, 2029 transitions, 32715 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:53,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:38:53,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:38:53,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:38:59,412 INFO L130 PetriNetUnfolder]: 1761/6252 cut-off events. [2022-12-12 12:38:59,413 INFO L131 PetriNetUnfolder]: For 54334/56604 co-relation queries the response was YES. [2022-12-12 12:38:59,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41432 conditions, 6252 events. 1761/6252 cut-off events. For 54334/56604 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 60164 event pairs, 311 based on Foata normal form. 28/6163 useless extension candidates. Maximal degree in co-relation 26119. Up to 2572 conditions per place. [2022-12-12 12:38:59,440 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 727 selfloop transitions, 114 changer transitions 1590/2507 dead transitions. [2022-12-12 12:38:59,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 930 places, 2507 transitions, 45211 flow [2022-12-12 12:38:59,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-12 12:38:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-12-12 12:38:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 5105 transitions. [2022-12-12 12:38:59,443 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.567853170189099 [2022-12-12 12:38:59,444 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 799 predicate places. [2022-12-12 12:38:59,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 930 places, 2507 transitions, 45211 flow [2022-12-12 12:38:59,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 2507 transitions, 36963 flow, removed 4046 selfloop flow, removed 3 redundant places. [2022-12-12 12:38:59,626 INFO L495 AbstractCegarLoop]: Abstraction has has 927 places, 2507 transitions, 36963 flow [2022-12-12 12:38:59,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:38:59,627 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:38:59,627 INFO L214 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] [2022-12-12 12:38:59,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-12-12 12:38:59,627 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:38:59,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:38:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash 947743564, now seen corresponding path program 4 times [2022-12-12 12:38:59,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:38:59,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570084968] [2022-12-12 12:38:59,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:38:59,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:38:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:39:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:39:00,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:39:00,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570084968] [2022-12-12 12:39:00,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570084968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:39:00,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:39:00,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:39:00,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701225480] [2022-12-12 12:39:00,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:39:00,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:39:00,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:39:00,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:39:00,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:39:00,298 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:39:00,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 2507 transitions, 36963 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:00,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:39:00,300 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:39:00,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:39:06,315 INFO L130 PetriNetUnfolder]: 1827/6497 cut-off events. [2022-12-12 12:39:06,316 INFO L131 PetriNetUnfolder]: For 47816/50079 co-relation queries the response was YES. [2022-12-12 12:39:06,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40393 conditions, 6497 events. 1827/6497 cut-off events. For 47816/50079 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 62543 event pairs, 313 based on Foata normal form. 35/6422 useless extension candidates. Maximal degree in co-relation 25169. Up to 2572 conditions per place. [2022-12-12 12:39:06,348 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 790 selfloop transitions, 135 changer transitions 1673/2674 dead transitions. [2022-12-12 12:39:06,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 986 places, 2674 transitions, 43389 flow [2022-12-12 12:39:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-12 12:39:06,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-12-12 12:39:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4963 transitions. [2022-12-12 12:39:06,351 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5704597701149425 [2022-12-12 12:39:06,352 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 855 predicate places. [2022-12-12 12:39:06,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 986 places, 2674 transitions, 43389 flow [2022-12-12 12:39:06,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 979 places, 2674 transitions, 38713 flow, removed 2226 selfloop flow, removed 7 redundant places. [2022-12-12 12:39:06,563 INFO L495 AbstractCegarLoop]: Abstraction has has 979 places, 2674 transitions, 38713 flow [2022-12-12 12:39:06,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:06,564 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:39:06,564 INFO L214 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] [2022-12-12 12:39:06,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-12-12 12:39:06,565 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:39:06,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:39:06,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1136848006, now seen corresponding path program 5 times [2022-12-12 12:39:06,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:39:06,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680328632] [2022-12-12 12:39:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:39:06,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:39:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:39:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:39:07,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:39:07,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680328632] [2022-12-12 12:39:07,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680328632] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:39:07,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:39:07,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:39:07,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600012071] [2022-12-12 12:39:07,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:39:07,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:39:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:39:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:39:07,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:39:07,312 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:39:07,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 979 places, 2674 transitions, 38713 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:07,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:39:07,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:39:07,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:39:12,995 INFO L130 PetriNetUnfolder]: 1846/6606 cut-off events. [2022-12-12 12:39:12,996 INFO L131 PetriNetUnfolder]: For 48033/50157 co-relation queries the response was YES. [2022-12-12 12:39:13,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41098 conditions, 6606 events. 1846/6606 cut-off events. For 48033/50157 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 63762 event pairs, 309 based on Foata normal form. 30/6521 useless extension candidates. Maximal degree in co-relation 25830. Up to 2572 conditions per place. [2022-12-12 12:39:13,023 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 776 selfloop transitions, 136 changer transitions 1745/2733 dead transitions. [2022-12-12 12:39:13,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1034 places, 2733 transitions, 44463 flow [2022-12-12 12:39:13,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-12 12:39:13,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-12-12 12:39:13,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 4629 transitions. [2022-12-12 12:39:13,026 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5700738916256157 [2022-12-12 12:39:13,026 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 903 predicate places. [2022-12-12 12:39:13,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1034 places, 2733 transitions, 44463 flow [2022-12-12 12:39:13,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1026 places, 2733 transitions, 39697 flow, removed 2261 selfloop flow, removed 8 redundant places. [2022-12-12 12:39:13,181 INFO L495 AbstractCegarLoop]: Abstraction has has 1026 places, 2733 transitions, 39697 flow [2022-12-12 12:39:13,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:13,182 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:39:13,182 INFO L214 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] [2022-12-12 12:39:13,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-12-12 12:39:13,182 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:39:13,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:39:13,182 INFO L85 PathProgramCache]: Analyzing trace with hash -118309986, now seen corresponding path program 6 times [2022-12-12 12:39:13,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:39:13,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939564304] [2022-12-12 12:39:13,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:39:13,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:39:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:39:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:39:13,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:39:13,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939564304] [2022-12-12 12:39:13,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939564304] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:39:13,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:39:13,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:39:13,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878495531] [2022-12-12 12:39:13,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:39:13,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:39:13,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:39:13,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:39:13,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:39:13,888 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:39:13,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1026 places, 2733 transitions, 39697 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:13,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:39:13,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:39:13,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:39:18,685 INFO L130 PetriNetUnfolder]: 1852/6664 cut-off events. [2022-12-12 12:39:18,685 INFO L131 PetriNetUnfolder]: For 48822/51045 co-relation queries the response was YES. [2022-12-12 12:39:18,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41732 conditions, 6664 events. 1852/6664 cut-off events. For 48822/51045 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 64323 event pairs, 306 based on Foata normal form. 34/6587 useless extension candidates. Maximal degree in co-relation 26414. Up to 2572 conditions per place. [2022-12-12 12:39:18,715 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 776 selfloop transitions, 143 changer transitions 1797/2792 dead transitions. [2022-12-12 12:39:18,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1069 places, 2792 transitions, 45637 flow [2022-12-12 12:39:18,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:39:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:39:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3679 transitions. [2022-12-12 12:39:18,718 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5766457680250784 [2022-12-12 12:39:18,719 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 938 predicate places. [2022-12-12 12:39:18,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1069 places, 2792 transitions, 45637 flow [2022-12-12 12:39:18,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1061 places, 2792 transitions, 40789 flow, removed 2302 selfloop flow, removed 8 redundant places. [2022-12-12 12:39:18,887 INFO L495 AbstractCegarLoop]: Abstraction has has 1061 places, 2792 transitions, 40789 flow [2022-12-12 12:39:18,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:18,888 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:39:18,888 INFO L214 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] [2022-12-12 12:39:18,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-12-12 12:39:18,888 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:39:18,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:39:18,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1579386452, now seen corresponding path program 7 times [2022-12-12 12:39:18,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:39:18,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106467811] [2022-12-12 12:39:18,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:39:18,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:39:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:39:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:39:19,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:39:19,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106467811] [2022-12-12 12:39:19,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106467811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:39:19,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:39:19,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:39:19,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353308900] [2022-12-12 12:39:19,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:39:19,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:39:19,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:39:19,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:39:19,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:39:19,561 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:39:19,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1061 places, 2792 transitions, 40789 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:19,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:39:19,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:39:19,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:39:24,854 INFO L130 PetriNetUnfolder]: 1859/6723 cut-off events. [2022-12-12 12:39:24,855 INFO L131 PetriNetUnfolder]: For 49568/51934 co-relation queries the response was YES. [2022-12-12 12:39:24,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42366 conditions, 6723 events. 1859/6723 cut-off events. For 49568/51934 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 65089 event pairs, 303 based on Foata normal form. 38/6650 useless extension candidates. Maximal degree in co-relation 26994. Up to 2572 conditions per place. [2022-12-12 12:39:24,885 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 764 selfloop transitions, 130 changer transitions 1857/2827 dead transitions. [2022-12-12 12:39:24,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1110 places, 2827 transitions, 46654 flow [2022-12-12 12:39:24,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-12 12:39:24,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-12 12:39:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4152 transitions. [2022-12-12 12:39:24,888 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5726896551724138 [2022-12-12 12:39:24,888 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 979 predicate places. [2022-12-12 12:39:24,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1110 places, 2827 transitions, 46654 flow [2022-12-12 12:39:25,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1102 places, 2827 transitions, 41680 flow, removed 2365 selfloop flow, removed 8 redundant places. [2022-12-12 12:39:25,060 INFO L495 AbstractCegarLoop]: Abstraction has has 1102 places, 2827 transitions, 41680 flow [2022-12-12 12:39:25,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:25,061 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:39:25,061 INFO L214 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] [2022-12-12 12:39:25,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-12-12 12:39:25,061 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:39:25,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:39:25,062 INFO L85 PathProgramCache]: Analyzing trace with hash -911387336, now seen corresponding path program 8 times [2022-12-12 12:39:25,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:39:25,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305696056] [2022-12-12 12:39:25,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:39:25,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:39:25,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:39:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:39:25,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:39:25,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305696056] [2022-12-12 12:39:25,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305696056] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:39:25,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:39:25,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:39:25,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169221937] [2022-12-12 12:39:25,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:39:25,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:39:25,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:39:25,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:39:25,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:39:25,718 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:39:25,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1102 places, 2827 transitions, 41680 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:25,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:39:25,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:39:25,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:39:30,331 INFO L130 PetriNetUnfolder]: 1859/6728 cut-off events. [2022-12-12 12:39:30,332 INFO L131 PetriNetUnfolder]: For 50323/52615 co-relation queries the response was YES. [2022-12-12 12:39:30,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42686 conditions, 6728 events. 1859/6728 cut-off events. For 50323/52615 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 65155 event pairs, 306 based on Foata normal form. 31/6647 useless extension candidates. Maximal degree in co-relation 27268. Up to 2572 conditions per place. [2022-12-12 12:39:30,381 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 732 selfloop transitions, 105 changer transitions 1913/2826 dead transitions. [2022-12-12 12:39:30,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1142 places, 2826 transitions, 47072 flow [2022-12-12 12:39:30,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-12 12:39:30,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-12-12 12:39:30,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3444 transitions. [2022-12-12 12:39:30,384 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5793103448275863 [2022-12-12 12:39:30,385 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1011 predicate places. [2022-12-12 12:39:30,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1142 places, 2826 transitions, 47072 flow [2022-12-12 12:39:30,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1134 places, 2826 transitions, 42096 flow, removed 2366 selfloop flow, removed 8 redundant places. [2022-12-12 12:39:30,573 INFO L495 AbstractCegarLoop]: Abstraction has has 1134 places, 2826 transitions, 42096 flow [2022-12-12 12:39:30,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:30,573 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:39:30,574 INFO L214 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] [2022-12-12 12:39:30,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-12-12 12:39:30,574 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:39:30,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:39:30,574 INFO L85 PathProgramCache]: Analyzing trace with hash 2039732554, now seen corresponding path program 9 times [2022-12-12 12:39:30,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:39:30,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085542614] [2022-12-12 12:39:30,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:39:30,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:39:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:39:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:39:31,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:39:31,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085542614] [2022-12-12 12:39:31,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085542614] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:39:31,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:39:31,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:39:31,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534942254] [2022-12-12 12:39:31,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:39:31,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:39:31,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:39:31,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:39:31,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:39:31,193 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:39:31,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1134 places, 2826 transitions, 42096 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:31,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:39:31,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:39:31,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:39:36,735 INFO L130 PetriNetUnfolder]: 1945/6972 cut-off events. [2022-12-12 12:39:36,735 INFO L131 PetriNetUnfolder]: For 51563/53763 co-relation queries the response was YES. [2022-12-12 12:39:36,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44547 conditions, 6972 events. 1945/6972 cut-off events. For 51563/53763 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 67361 event pairs, 304 based on Foata normal form. 35/6896 useless extension candidates. Maximal degree in co-relation 29073. Up to 2572 conditions per place. [2022-12-12 12:39:36,765 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 816 selfloop transitions, 137 changer transitions 1985/3014 dead transitions. [2022-12-12 12:39:36,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1188 places, 3014 transitions, 50216 flow [2022-12-12 12:39:36,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-12 12:39:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-12 12:39:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 4554 transitions. [2022-12-12 12:39:36,768 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5710344827586207 [2022-12-12 12:39:36,768 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1057 predicate places. [2022-12-12 12:39:36,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1188 places, 3014 transitions, 50216 flow [2022-12-12 12:39:36,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1181 places, 3014 transitions, 44784 flow, removed 2604 selfloop flow, removed 7 redundant places. [2022-12-12 12:39:36,943 INFO L495 AbstractCegarLoop]: Abstraction has has 1181 places, 3014 transitions, 44784 flow [2022-12-12 12:39:36,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:36,944 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:39:36,944 INFO L214 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] [2022-12-12 12:39:36,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-12-12 12:39:36,944 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:39:36,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:39:36,944 INFO L85 PathProgramCache]: Analyzing trace with hash -804436184, now seen corresponding path program 10 times [2022-12-12 12:39:36,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:39:36,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799217524] [2022-12-12 12:39:36,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:39:36,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:39:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:39:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:39:37,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:39:37,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799217524] [2022-12-12 12:39:37,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799217524] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:39:37,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:39:37,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:39:37,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614640438] [2022-12-12 12:39:37,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:39:37,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:39:37,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:39:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:39:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:39:37,600 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:39:37,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1181 places, 3014 transitions, 44784 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:37,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:39:37,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:39:37,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:39:43,539 INFO L130 PetriNetUnfolder]: 1992/7138 cut-off events. [2022-12-12 12:39:43,540 INFO L131 PetriNetUnfolder]: For 53697/56049 co-relation queries the response was YES. [2022-12-12 12:39:43,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45866 conditions, 7138 events. 1992/7138 cut-off events. For 53697/56049 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 69255 event pairs, 307 based on Foata normal form. 36/7069 useless extension candidates. Maximal degree in co-relation 30324. Up to 2572 conditions per place. [2022-12-12 12:39:43,572 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 835 selfloop transitions, 157 changer transitions 2057/3125 dead transitions. [2022-12-12 12:39:43,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1236 places, 3125 transitions, 52350 flow [2022-12-12 12:39:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-12 12:39:43,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-12-12 12:39:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 4637 transitions. [2022-12-12 12:39:43,575 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5710591133004926 [2022-12-12 12:39:43,575 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1105 predicate places. [2022-12-12 12:39:43,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1236 places, 3125 transitions, 52350 flow [2022-12-12 12:39:43,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1228 places, 3125 transitions, 46560 flow, removed 2772 selfloop flow, removed 8 redundant places. [2022-12-12 12:39:43,772 INFO L495 AbstractCegarLoop]: Abstraction has has 1228 places, 3125 transitions, 46560 flow [2022-12-12 12:39:43,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:43,772 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:39:43,772 INFO L214 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] [2022-12-12 12:39:43,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-12-12 12:39:43,773 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:39:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:39:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1390598238, now seen corresponding path program 11 times [2022-12-12 12:39:43,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:39:43,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152905239] [2022-12-12 12:39:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:39:43,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:39:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:39:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:39:44,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:39:44,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152905239] [2022-12-12 12:39:44,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152905239] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:39:44,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:39:44,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:39:44,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480288042] [2022-12-12 12:39:44,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:39:44,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:39:44,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:39:44,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:39:44,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:39:44,369 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:39:44,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1228 places, 3125 transitions, 46560 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:44,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:39:44,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:39:44,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:39:49,616 INFO L130 PetriNetUnfolder]: 2027/7274 cut-off events. [2022-12-12 12:39:49,617 INFO L131 PetriNetUnfolder]: For 55571/57923 co-relation queries the response was YES. [2022-12-12 12:39:49,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46835 conditions, 7274 events. 2027/7274 cut-off events. For 55571/57923 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 70654 event pairs, 305 based on Foata normal form. 38/7201 useless extension candidates. Maximal degree in co-relation 31253. Up to 2572 conditions per place. [2022-12-12 12:39:49,652 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 863 selfloop transitions, 160 changer transitions 2117/3216 dead transitions. [2022-12-12 12:39:49,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1277 places, 3216 transitions, 53950 flow [2022-12-12 12:39:49,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-12 12:39:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-12 12:39:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4159 transitions. [2022-12-12 12:39:49,658 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5736551724137932 [2022-12-12 12:39:49,658 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1146 predicate places. [2022-12-12 12:39:49,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1277 places, 3216 transitions, 53950 flow [2022-12-12 12:39:49,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1269 places, 3216 transitions, 48476 flow, removed 2614 selfloop flow, removed 8 redundant places. [2022-12-12 12:39:49,854 INFO L495 AbstractCegarLoop]: Abstraction has has 1269 places, 3216 transitions, 48476 flow [2022-12-12 12:39:49,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:49,855 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:39:49,855 INFO L214 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] [2022-12-12 12:39:49,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-12-12 12:39:49,855 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:39:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:39:49,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1750662394, now seen corresponding path program 12 times [2022-12-12 12:39:49,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:39:49,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836253308] [2022-12-12 12:39:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:39:49,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:39:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:39:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:39:50,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:39:50,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836253308] [2022-12-12 12:39:50,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836253308] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:39:50,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:39:50,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:39:50,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016616310] [2022-12-12 12:39:50,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:39:50,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:39:50,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:39:50,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:39:50,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:39:50,455 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:39:50,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1269 places, 3216 transitions, 48476 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:50,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:39:50,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:39:50,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:39:55,516 INFO L130 PetriNetUnfolder]: 2053/7350 cut-off events. [2022-12-12 12:39:55,517 INFO L131 PetriNetUnfolder]: For 57413/59602 co-relation queries the response was YES. [2022-12-12 12:39:55,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47885 conditions, 7350 events. 2053/7350 cut-off events. For 57413/59602 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 71330 event pairs, 314 based on Foata normal form. 30/7270 useless extension candidates. Maximal degree in co-relation 32249. Up to 2572 conditions per place. [2022-12-12 12:39:55,553 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 862 selfloop transitions, 159 changer transitions 2168/3265 dead transitions. [2022-12-12 12:39:55,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1310 places, 3265 transitions, 55558 flow [2022-12-12 12:39:55,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-12 12:39:55,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-12 12:39:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3528 transitions. [2022-12-12 12:39:55,556 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5793103448275863 [2022-12-12 12:39:55,556 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1179 predicate places. [2022-12-12 12:39:55,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1310 places, 3265 transitions, 55558 flow [2022-12-12 12:39:55,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1302 places, 3265 transitions, 50006 flow, removed 2653 selfloop flow, removed 8 redundant places. [2022-12-12 12:39:55,771 INFO L495 AbstractCegarLoop]: Abstraction has has 1302 places, 3265 transitions, 50006 flow [2022-12-12 12:39:55,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:55,772 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:39:55,772 INFO L214 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] [2022-12-12 12:39:55,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-12-12 12:39:55,772 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:39:55,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:39:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1162436192, now seen corresponding path program 13 times [2022-12-12 12:39:55,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:39:55,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326189819] [2022-12-12 12:39:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:39:55,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:39:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:39:56,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:39:56,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:39:56,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326189819] [2022-12-12 12:39:56,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326189819] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:39:56,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:39:56,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:39:56,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236924412] [2022-12-12 12:39:56,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:39:56,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:39:56,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:39:56,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:39:56,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:39:56,347 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:39:56,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1302 places, 3265 transitions, 50006 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:39:56,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:39:56,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:39:56,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:40:01,690 INFO L130 PetriNetUnfolder]: 2055/7419 cut-off events. [2022-12-12 12:40:01,691 INFO L131 PetriNetUnfolder]: For 59478/61644 co-relation queries the response was YES. [2022-12-12 12:40:01,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48800 conditions, 7419 events. 2055/7419 cut-off events. For 59478/61644 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 72285 event pairs, 306 based on Foata normal form. 31/7343 useless extension candidates. Maximal degree in co-relation 33112. Up to 2572 conditions per place. [2022-12-12 12:40:01,729 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 844 selfloop transitions, 168 changer transitions 2228/3316 dead transitions. [2022-12-12 12:40:01,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1351 places, 3316 transitions, 57245 flow [2022-12-12 12:40:01,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-12 12:40:01,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-12 12:40:01,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4160 transitions. [2022-12-12 12:40:01,733 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5737931034482758 [2022-12-12 12:40:01,733 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1220 predicate places. [2022-12-12 12:40:01,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1351 places, 3316 transitions, 57245 flow [2022-12-12 12:40:01,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1343 places, 3316 transitions, 51575 flow, removed 2712 selfloop flow, removed 8 redundant places. [2022-12-12 12:40:01,971 INFO L495 AbstractCegarLoop]: Abstraction has has 1343 places, 3316 transitions, 51575 flow [2022-12-12 12:40:01,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:01,971 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:40:01,971 INFO L214 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] [2022-12-12 12:40:01,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-12-12 12:40:01,971 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:40:01,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:40:01,972 INFO L85 PathProgramCache]: Analyzing trace with hash -417407562, now seen corresponding path program 14 times [2022-12-12 12:40:01,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:40:01,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497595558] [2022-12-12 12:40:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:40:01,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:40:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:40:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:40:02,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:40:02,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497595558] [2022-12-12 12:40:02,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497595558] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:40:02,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:40:02,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:40:02,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067861570] [2022-12-12 12:40:02,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:40:02,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:40:02,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:40:02,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:40:02,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:40:02,596 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:40:02,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1343 places, 3316 transitions, 51575 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:02,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:40:02,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:40:02,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:40:08,761 INFO L130 PetriNetUnfolder]: 2082/7568 cut-off events. [2022-12-12 12:40:08,761 INFO L131 PetriNetUnfolder]: For 62688/65044 co-relation queries the response was YES. [2022-12-12 12:40:08,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50382 conditions, 7568 events. 2082/7568 cut-off events. For 62688/65044 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 74007 event pairs, 307 based on Foata normal form. 38/7491 useless extension candidates. Maximal degree in co-relation 34642. Up to 2572 conditions per place. [2022-12-12 12:40:08,797 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 846 selfloop transitions, 150 changer transitions 2311/3383 dead transitions. [2022-12-12 12:40:08,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1402 places, 3383 transitions, 59634 flow [2022-12-12 12:40:08,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-12 12:40:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-12-12 12:40:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4963 transitions. [2022-12-12 12:40:08,800 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5704597701149425 [2022-12-12 12:40:08,800 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1271 predicate places. [2022-12-12 12:40:08,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1402 places, 3383 transitions, 59634 flow [2022-12-12 12:40:09,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1394 places, 3383 transitions, 52836 flow, removed 3276 selfloop flow, removed 8 redundant places. [2022-12-12 12:40:09,034 INFO L495 AbstractCegarLoop]: Abstraction has has 1394 places, 3383 transitions, 52836 flow [2022-12-12 12:40:09,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:09,034 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:40:09,034 INFO L214 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] [2022-12-12 12:40:09,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-12-12 12:40:09,035 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:40:09,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:40:09,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1360377984, now seen corresponding path program 15 times [2022-12-12 12:40:09,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:40:09,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101199193] [2022-12-12 12:40:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:40:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:40:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:40:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:40:09,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:40:09,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101199193] [2022-12-12 12:40:09,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101199193] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:40:09,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:40:09,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:40:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099635949] [2022-12-12 12:40:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:40:09,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:40:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:40:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:40:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:40:09,637 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:40:09,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1394 places, 3383 transitions, 52836 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:09,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:40:09,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:40:09,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:40:14,795 INFO L130 PetriNetUnfolder]: 2093/7613 cut-off events. [2022-12-12 12:40:14,796 INFO L131 PetriNetUnfolder]: For 65774/67927 co-relation queries the response was YES. [2022-12-12 12:40:14,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50731 conditions, 7613 events. 2093/7613 cut-off events. For 65774/67927 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 74619 event pairs, 312 based on Foata normal form. 29/7532 useless extension candidates. Maximal degree in co-relation 34941. Up to 2572 conditions per place. [2022-12-12 12:40:14,834 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 843 selfloop transitions, 147 changer transitions 2362/3428 dead transitions. [2022-12-12 12:40:14,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1434 places, 3428 transitions, 60326 flow [2022-12-12 12:40:14,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-12 12:40:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-12-12 12:40:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3452 transitions. [2022-12-12 12:40:14,838 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5806560134566863 [2022-12-12 12:40:14,838 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1303 predicate places. [2022-12-12 12:40:14,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1434 places, 3428 transitions, 60326 flow [2022-12-12 12:40:15,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1426 places, 3428 transitions, 54438 flow, removed 2821 selfloop flow, removed 8 redundant places. [2022-12-12 12:40:15,079 INFO L495 AbstractCegarLoop]: Abstraction has has 1426 places, 3428 transitions, 54438 flow [2022-12-12 12:40:15,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:15,079 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:40:15,079 INFO L214 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] [2022-12-12 12:40:15,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-12-12 12:40:15,079 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:40:15,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:40:15,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1691541618, now seen corresponding path program 16 times [2022-12-12 12:40:15,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:40:15,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344273228] [2022-12-12 12:40:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:40:15,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:40:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:40:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:40:15,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:40:15,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344273228] [2022-12-12 12:40:15,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344273228] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:40:15,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:40:15,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:40:15,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783059787] [2022-12-12 12:40:15,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:40:15,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:40:15,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:40:15,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:40:15,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:40:15,816 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:40:15,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1426 places, 3428 transitions, 54438 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:15,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:40:15,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:40:15,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:40:20,806 INFO L130 PetriNetUnfolder]: 2095/7635 cut-off events. [2022-12-12 12:40:20,806 INFO L131 PetriNetUnfolder]: For 70214/72712 co-relation queries the response was YES. [2022-12-12 12:40:20,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51524 conditions, 7635 events. 2095/7635 cut-off events. For 70214/72712 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 74826 event pairs, 308 based on Foata normal form. 35/7561 useless extension candidates. Maximal degree in co-relation 35686. Up to 2572 conditions per place. [2022-12-12 12:40:20,861 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 830 selfloop transitions, 128 changer transitions 2418/3452 dead transitions. [2022-12-12 12:40:20,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1469 places, 3452 transitions, 61678 flow [2022-12-12 12:40:20,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:40:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:40:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3686 transitions. [2022-12-12 12:40:20,865 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5777429467084639 [2022-12-12 12:40:20,865 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1338 predicate places. [2022-12-12 12:40:20,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1469 places, 3452 transitions, 61678 flow [2022-12-12 12:40:21,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1461 places, 3452 transitions, 55814 flow, removed 2809 selfloop flow, removed 8 redundant places. [2022-12-12 12:40:21,205 INFO L495 AbstractCegarLoop]: Abstraction has has 1461 places, 3452 transitions, 55814 flow [2022-12-12 12:40:21,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:21,206 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:40:21,206 INFO L214 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] [2022-12-12 12:40:21,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-12-12 12:40:21,206 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:40:21,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:40:21,207 INFO L85 PathProgramCache]: Analyzing trace with hash -452707408, now seen corresponding path program 17 times [2022-12-12 12:40:21,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:40:21,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928608160] [2022-12-12 12:40:21,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:40:21,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:40:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:40:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:40:21,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:40:21,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928608160] [2022-12-12 12:40:21,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928608160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:40:21,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:40:21,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:40:21,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557797078] [2022-12-12 12:40:21,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:40:21,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:40:21,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:40:21,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:40:21,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:40:21,923 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:40:21,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1461 places, 3452 transitions, 55814 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:21,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:40:21,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:40:21,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:40:27,222 INFO L130 PetriNetUnfolder]: 2081/7658 cut-off events. [2022-12-12 12:40:27,222 INFO L131 PetriNetUnfolder]: For 73192/75399 co-relation queries the response was YES. [2022-12-12 12:40:27,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52226 conditions, 7658 events. 2081/7658 cut-off events. For 73192/75399 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 75310 event pairs, 305 based on Foata normal form. 29/7581 useless extension candidates. Maximal degree in co-relation 36328. Up to 2572 conditions per place. [2022-12-12 12:40:27,263 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 805 selfloop transitions, 114 changer transitions 2475/3470 dead transitions. [2022-12-12 12:40:27,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1504 places, 3470 transitions, 63011 flow [2022-12-12 12:40:27,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:40:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:40:27,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3687 transitions. [2022-12-12 12:40:27,265 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5778996865203762 [2022-12-12 12:40:27,265 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1373 predicate places. [2022-12-12 12:40:27,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1504 places, 3470 transitions, 63011 flow [2022-12-12 12:40:27,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1496 places, 3470 transitions, 57135 flow, removed 2815 selfloop flow, removed 8 redundant places. [2022-12-12 12:40:27,540 INFO L495 AbstractCegarLoop]: Abstraction has has 1496 places, 3470 transitions, 57135 flow [2022-12-12 12:40:27,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:27,541 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:40:27,541 INFO L214 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] [2022-12-12 12:40:27,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-12-12 12:40:27,541 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:40:27,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:40:27,541 INFO L85 PathProgramCache]: Analyzing trace with hash 322130268, now seen corresponding path program 18 times [2022-12-12 12:40:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:40:27,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281321061] [2022-12-12 12:40:27,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:40:27,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:40:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:40:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:40:28,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:40:28,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281321061] [2022-12-12 12:40:28,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281321061] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:40:28,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:40:28,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:40:28,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449944028] [2022-12-12 12:40:28,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:40:28,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:40:28,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:40:28,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:40:28,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:40:28,203 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:40:28,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1496 places, 3470 transitions, 57135 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:28,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:40:28,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:40:28,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:40:33,728 INFO L130 PetriNetUnfolder]: 2109/7749 cut-off events. [2022-12-12 12:40:33,728 INFO L131 PetriNetUnfolder]: For 78656/80888 co-relation queries the response was YES. [2022-12-12 12:40:33,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53594 conditions, 7749 events. 2109/7749 cut-off events. For 78656/80888 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 76294 event pairs, 307 based on Foata normal form. 31/7665 useless extension candidates. Maximal degree in co-relation 37646. Up to 2572 conditions per place. [2022-12-12 12:40:33,767 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 788 selfloop transitions, 122 changer transitions 2535/3521 dead transitions. [2022-12-12 12:40:33,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1544 places, 3521 transitions, 65194 flow [2022-12-12 12:40:33,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-12 12:40:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-12 12:40:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4076 transitions. [2022-12-12 12:40:33,770 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5736805066854328 [2022-12-12 12:40:33,770 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1413 predicate places. [2022-12-12 12:40:33,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1544 places, 3521 transitions, 65194 flow [2022-12-12 12:40:34,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1536 places, 3521 transitions, 58898 flow, removed 3025 selfloop flow, removed 8 redundant places. [2022-12-12 12:40:34,061 INFO L495 AbstractCegarLoop]: Abstraction has has 1536 places, 3521 transitions, 58898 flow [2022-12-12 12:40:34,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:34,061 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:40:34,062 INFO L214 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] [2022-12-12 12:40:34,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-12-12 12:40:34,062 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:40:34,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:40:34,062 INFO L85 PathProgramCache]: Analyzing trace with hash -35469536, now seen corresponding path program 19 times [2022-12-12 12:40:34,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:40:34,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926340634] [2022-12-12 12:40:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:40:34,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:40:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:40:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:40:34,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:40:34,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926340634] [2022-12-12 12:40:34,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926340634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:40:34,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:40:34,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:40:34,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812685679] [2022-12-12 12:40:34,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:40:34,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:40:34,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:40:34,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:40:34,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:40:34,866 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:40:34,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1536 places, 3521 transitions, 58898 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:34,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:40:34,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:40:34,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:40:40,225 INFO L130 PetriNetUnfolder]: 2117/7845 cut-off events. [2022-12-12 12:40:40,226 INFO L131 PetriNetUnfolder]: For 83077/85245 co-relation queries the response was YES. [2022-12-12 12:40:40,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54707 conditions, 7845 events. 2117/7845 cut-off events. For 83077/85245 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 77473 event pairs, 311 based on Foata normal form. 28/7761 useless extension candidates. Maximal degree in co-relation 38713. Up to 2572 conditions per place. [2022-12-12 12:40:40,265 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 794 selfloop transitions, 127 changer transitions 2587/3584 dead transitions. [2022-12-12 12:40:40,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1579 places, 3584 transitions, 67249 flow [2022-12-12 12:40:40,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:40:40,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:40:40,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3683 transitions. [2022-12-12 12:40:40,269 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5772727272727273 [2022-12-12 12:40:40,270 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1448 predicate places. [2022-12-12 12:40:40,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1579 places, 3584 transitions, 67249 flow [2022-12-12 12:40:40,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1571 places, 3584 transitions, 61021 flow, removed 2991 selfloop flow, removed 8 redundant places. [2022-12-12 12:40:40,605 INFO L495 AbstractCegarLoop]: Abstraction has has 1571 places, 3584 transitions, 61021 flow [2022-12-12 12:40:40,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:40,606 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:40:40,606 INFO L214 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] [2022-12-12 12:40:40,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-12-12 12:40:40,606 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:40:40,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:40:40,606 INFO L85 PathProgramCache]: Analyzing trace with hash -882099072, now seen corresponding path program 20 times [2022-12-12 12:40:40,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:40:40,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722931624] [2022-12-12 12:40:40,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:40:40,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:40:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:40:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:40:41,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:40:41,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722931624] [2022-12-12 12:40:41,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722931624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:40:41,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:40:41,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:40:41,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009632382] [2022-12-12 12:40:41,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:40:41,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:40:41,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:40:41,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:40:41,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:40:41,277 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:40:41,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1571 places, 3584 transitions, 61021 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:41,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:40:41,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:40:41,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:40:46,619 INFO L130 PetriNetUnfolder]: 2131/7925 cut-off events. [2022-12-12 12:40:46,619 INFO L131 PetriNetUnfolder]: For 87313/89686 co-relation queries the response was YES. [2022-12-12 12:40:46,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55898 conditions, 7925 events. 2131/7925 cut-off events. For 87313/89686 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 78462 event pairs, 313 based on Foata normal form. 31/7849 useless extension candidates. Maximal degree in co-relation 39848. Up to 2572 conditions per place. [2022-12-12 12:40:46,658 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 791 selfloop transitions, 122 changer transitions 2645/3634 dead transitions. [2022-12-12 12:40:46,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1617 places, 3634 transitions, 69328 flow [2022-12-12 12:40:46,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-12 12:40:46,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-12 12:40:46,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3915 transitions. [2022-12-12 12:40:46,662 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2022-12-12 12:40:46,662 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1486 predicate places. [2022-12-12 12:40:46,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1617 places, 3634 transitions, 69328 flow [2022-12-12 12:40:46,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1609 places, 3634 transitions, 62886 flow, removed 3098 selfloop flow, removed 8 redundant places. [2022-12-12 12:40:46,989 INFO L495 AbstractCegarLoop]: Abstraction has has 1609 places, 3634 transitions, 62886 flow [2022-12-12 12:40:46,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:46,989 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:40:46,989 INFO L214 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] [2022-12-12 12:40:46,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-12-12 12:40:46,989 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:40:46,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:40:46,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1033591088, now seen corresponding path program 21 times [2022-12-12 12:40:46,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:40:46,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992204199] [2022-12-12 12:40:46,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:40:46,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:40:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:40:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:40:47,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:40:47,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992204199] [2022-12-12 12:40:47,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992204199] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:40:47,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:40:47,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:40:47,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299487001] [2022-12-12 12:40:47,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:40:47,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:40:47,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:40:47,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:40:47,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:40:47,696 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:40:47,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1609 places, 3634 transitions, 62886 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:47,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:40:47,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:40:47,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:40:52,932 INFO L130 PetriNetUnfolder]: 2140/7971 cut-off events. [2022-12-12 12:40:52,933 INFO L131 PetriNetUnfolder]: For 91841/94000 co-relation queries the response was YES. [2022-12-12 12:40:52,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56904 conditions, 7971 events. 2140/7971 cut-off events. For 91841/94000 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 79122 event pairs, 309 based on Foata normal form. 26/7891 useless extension candidates. Maximal degree in co-relation 40800. Up to 2572 conditions per place. [2022-12-12 12:40:52,973 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 788 selfloop transitions, 112 changer transitions 2698/3674 dead transitions. [2022-12-12 12:40:52,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1651 places, 3674 transitions, 71125 flow [2022-12-12 12:40:52,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-12 12:40:52,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-12 12:40:52,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3603 transitions. [2022-12-12 12:40:52,975 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5778668805132318 [2022-12-12 12:40:52,975 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1520 predicate places. [2022-12-12 12:40:52,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1651 places, 3674 transitions, 71125 flow [2022-12-12 12:40:53,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1643 places, 3674 transitions, 64823 flow, removed 3028 selfloop flow, removed 8 redundant places. [2022-12-12 12:40:53,245 INFO L495 AbstractCegarLoop]: Abstraction has has 1643 places, 3674 transitions, 64823 flow [2022-12-12 12:40:53,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:53,245 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:40:53,246 INFO L214 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] [2022-12-12 12:40:53,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-12-12 12:40:53,246 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:40:53,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:40:53,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1476393860, now seen corresponding path program 22 times [2022-12-12 12:40:53,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:40:53,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420380613] [2022-12-12 12:40:53,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:40:53,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:40:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:40:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:40:53,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:40:53,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420380613] [2022-12-12 12:40:53,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420380613] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:40:53,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:40:53,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:40:53,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003846573] [2022-12-12 12:40:53,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:40:53,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:40:53,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:40:53,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:40:53,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:40:53,749 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:40:53,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1643 places, 3674 transitions, 64823 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:53,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:40:53,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:40:53,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:40:59,184 INFO L130 PetriNetUnfolder]: 2151/8065 cut-off events. [2022-12-12 12:40:59,185 INFO L131 PetriNetUnfolder]: For 98531/100805 co-relation queries the response was YES. [2022-12-12 12:40:59,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58185 conditions, 8065 events. 2151/8065 cut-off events. For 98531/100805 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 80270 event pairs, 308 based on Foata normal form. 27/7980 useless extension candidates. Maximal degree in co-relation 42029. Up to 2572 conditions per place. [2022-12-12 12:40:59,225 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 776 selfloop transitions, 116 changer transitions 2749/3717 dead transitions. [2022-12-12 12:40:59,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1686 places, 3717 transitions, 73321 flow [2022-12-12 12:40:59,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:40:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:40:59,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3679 transitions. [2022-12-12 12:40:59,228 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5766457680250784 [2022-12-12 12:40:59,228 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1555 predicate places. [2022-12-12 12:40:59,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1686 places, 3717 transitions, 73321 flow [2022-12-12 12:40:59,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1678 places, 3717 transitions, 66915 flow, removed 3080 selfloop flow, removed 8 redundant places. [2022-12-12 12:40:59,511 INFO L495 AbstractCegarLoop]: Abstraction has has 1678 places, 3717 transitions, 66915 flow [2022-12-12 12:40:59,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:40:59,511 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:40:59,511 INFO L214 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] [2022-12-12 12:40:59,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-12-12 12:40:59,511 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:40:59,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:40:59,512 INFO L85 PathProgramCache]: Analyzing trace with hash 945995080, now seen corresponding path program 23 times [2022-12-12 12:40:59,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:40:59,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275113468] [2022-12-12 12:40:59,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:40:59,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:40:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:41:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:41:00,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:41:00,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275113468] [2022-12-12 12:41:00,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275113468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:41:00,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:41:00,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:41:00,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944821406] [2022-12-12 12:41:00,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:41:00,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:41:00,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:41:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:41:00,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:41:00,187 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:41:00,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1678 places, 3717 transitions, 66915 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:00,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:41:00,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:41:00,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:41:05,375 INFO L130 PetriNetUnfolder]: 2151/7995 cut-off events. [2022-12-12 12:41:05,375 INFO L131 PetriNetUnfolder]: For 103940/106171 co-relation queries the response was YES. [2022-12-12 12:41:05,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58571 conditions, 7995 events. 2151/7995 cut-off events. For 103940/106171 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 79453 event pairs, 305 based on Foata normal form. 26/7915 useless extension candidates. Maximal degree in co-relation 42371. Up to 2572 conditions per place. [2022-12-12 12:41:05,416 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 745 selfloop transitions, 88 changer transitions 2807/3716 dead transitions. [2022-12-12 12:41:05,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1720 places, 3716 transitions, 74067 flow [2022-12-12 12:41:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-12 12:41:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-12 12:41:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3603 transitions. [2022-12-12 12:41:05,430 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5778668805132318 [2022-12-12 12:41:05,432 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1589 predicate places. [2022-12-12 12:41:05,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1720 places, 3716 transitions, 74067 flow [2022-12-12 12:41:05,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1712 places, 3716 transitions, 67637 flow, removed 3092 selfloop flow, removed 8 redundant places. [2022-12-12 12:41:05,807 INFO L495 AbstractCegarLoop]: Abstraction has has 1712 places, 3716 transitions, 67637 flow [2022-12-12 12:41:05,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:05,807 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:41:05,808 INFO L214 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] [2022-12-12 12:41:05,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-12-12 12:41:05,808 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:41:05,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:41:05,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1516015468, now seen corresponding path program 24 times [2022-12-12 12:41:05,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:41:05,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538093600] [2022-12-12 12:41:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:41:05,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:41:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:41:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:41:06,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:41:06,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538093600] [2022-12-12 12:41:06,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538093600] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:41:06,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:41:06,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:41:06,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32845993] [2022-12-12 12:41:06,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:41:06,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:41:06,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:41:06,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:41:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:41:06,457 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:41:06,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1712 places, 3716 transitions, 67637 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:06,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:41:06,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:41:06,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:41:12,795 INFO L130 PetriNetUnfolder]: 2268/8330 cut-off events. [2022-12-12 12:41:12,795 INFO L131 PetriNetUnfolder]: For 115390/117622 co-relation queries the response was YES. [2022-12-12 12:41:12,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62115 conditions, 8330 events. 2268/8330 cut-off events. For 115390/117622 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 82877 event pairs, 308 based on Foata normal form. 32/8259 useless extension candidates. Maximal degree in co-relation 45857. Up to 2572 conditions per place. [2022-12-12 12:41:12,837 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 871 selfloop transitions, 131 changer transitions 2879/3957 dead transitions. [2022-12-12 12:41:12,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1765 places, 3957 transitions, 80037 flow [2022-12-12 12:41:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-12 12:41:12,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-12 12:41:12,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 4481 transitions. [2022-12-12 12:41:12,839 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5722860791826309 [2022-12-12 12:41:12,840 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1634 predicate places. [2022-12-12 12:41:12,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1765 places, 3957 transitions, 80037 flow [2022-12-12 12:41:13,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1758 places, 3957 transitions, 72797 flow, removed 3508 selfloop flow, removed 7 redundant places. [2022-12-12 12:41:13,162 INFO L495 AbstractCegarLoop]: Abstraction has has 1758 places, 3957 transitions, 72797 flow [2022-12-12 12:41:13,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:13,162 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:41:13,162 INFO L214 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] [2022-12-12 12:41:13,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-12-12 12:41:13,163 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:41:13,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:41:13,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1829376680, now seen corresponding path program 25 times [2022-12-12 12:41:13,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:41:13,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157478093] [2022-12-12 12:41:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:41:13,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:41:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:41:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:41:13,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:41:13,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157478093] [2022-12-12 12:41:13,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157478093] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:41:13,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:41:13,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:41:13,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684152339] [2022-12-12 12:41:13,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:41:13,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:41:13,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:41:13,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:41:13,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:41:13,664 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:41:13,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1758 places, 3957 transitions, 72797 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:13,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:41:13,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:41:13,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:41:19,317 INFO L130 PetriNetUnfolder]: 2289/8446 cut-off events. [2022-12-12 12:41:19,317 INFO L131 PetriNetUnfolder]: For 122019/124589 co-relation queries the response was YES. [2022-12-12 12:41:19,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63162 conditions, 8446 events. 2289/8446 cut-off events. For 122019/124589 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 84399 event pairs, 305 based on Foata normal form. 38/8375 useless extension candidates. Maximal degree in co-relation 46850. Up to 2572 conditions per place. [2022-12-12 12:41:19,358 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 878 selfloop transitions, 138 changer transitions 2930/4022 dead transitions. [2022-12-12 12:41:19,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1799 places, 4022 transitions, 81807 flow [2022-12-12 12:41:19,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-12 12:41:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-12 12:41:19,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3533 transitions. [2022-12-12 12:41:19,360 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5801313628899836 [2022-12-12 12:41:19,361 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1668 predicate places. [2022-12-12 12:41:19,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1799 places, 4022 transitions, 81807 flow [2022-12-12 12:41:19,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1791 places, 4022 transitions, 74855 flow, removed 3352 selfloop flow, removed 8 redundant places. [2022-12-12 12:41:19,699 INFO L495 AbstractCegarLoop]: Abstraction has has 1791 places, 4022 transitions, 74855 flow [2022-12-12 12:41:19,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:19,700 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:41:19,700 INFO L214 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] [2022-12-12 12:41:19,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-12-12 12:41:19,700 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:41:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:41:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1558884088, now seen corresponding path program 26 times [2022-12-12 12:41:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:41:19,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931498510] [2022-12-12 12:41:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:41:19,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:41:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:41:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:41:20,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:41:20,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931498510] [2022-12-12 12:41:20,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931498510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:41:20,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:41:20,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:41:20,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873736230] [2022-12-12 12:41:20,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:41:20,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:41:20,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:41:20,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:41:20,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:41:20,244 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:41:20,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1791 places, 4022 transitions, 74855 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:20,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:41:20,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:41:20,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:41:26,901 INFO L130 PetriNetUnfolder]: 2316/8541 cut-off events. [2022-12-12 12:41:26,901 INFO L131 PetriNetUnfolder]: For 126830/129188 co-relation queries the response was YES. [2022-12-12 12:41:26,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64747 conditions, 8541 events. 2316/8541 cut-off events. For 126830/129188 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 85324 event pairs, 304 based on Foata normal form. 32/8461 useless extension candidates. Maximal degree in co-relation 48385. Up to 2572 conditions per place. [2022-12-12 12:41:26,943 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 889 selfloop transitions, 142 changer transitions 2990/4097 dead transitions. [2022-12-12 12:41:26,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1840 places, 4097 transitions, 84461 flow [2022-12-12 12:41:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-12 12:41:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-12 12:41:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4164 transitions. [2022-12-12 12:41:26,946 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5743448275862069 [2022-12-12 12:41:26,946 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1709 predicate places. [2022-12-12 12:41:26,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1840 places, 4097 transitions, 84461 flow [2022-12-12 12:41:27,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1832 places, 4097 transitions, 77383 flow, removed 3415 selfloop flow, removed 8 redundant places. [2022-12-12 12:41:27,292 INFO L495 AbstractCegarLoop]: Abstraction has has 1832 places, 4097 transitions, 77383 flow [2022-12-12 12:41:27,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:27,293 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:41:27,293 INFO L214 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] [2022-12-12 12:41:27,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-12-12 12:41:27,293 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:41:27,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:41:27,293 INFO L85 PathProgramCache]: Analyzing trace with hash -523916844, now seen corresponding path program 27 times [2022-12-12 12:41:27,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:41:27,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608332804] [2022-12-12 12:41:27,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:41:27,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:41:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:41:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:41:27,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:41:27,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608332804] [2022-12-12 12:41:27,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608332804] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:41:27,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:41:27,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:41:27,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830370482] [2022-12-12 12:41:27,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:41:27,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:41:27,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:41:27,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:41:27,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:41:27,850 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:41:27,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1832 places, 4097 transitions, 77383 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:27,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:41:27,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:41:27,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:41:33,935 INFO L130 PetriNetUnfolder]: 2331/8580 cut-off events. [2022-12-12 12:41:33,935 INFO L131 PetriNetUnfolder]: For 134181/136490 co-relation queries the response was YES. [2022-12-12 12:41:33,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65760 conditions, 8580 events. 2331/8580 cut-off events. For 134181/136490 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 85777 event pairs, 313 based on Foata normal form. 32/8502 useless extension candidates. Maximal degree in co-relation 49348. Up to 2572 conditions per place. [2022-12-12 12:41:33,981 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 875 selfloop transitions, 124 changer transitions 3046/4121 dead transitions. [2022-12-12 12:41:33,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1875 places, 4121 transitions, 86079 flow [2022-12-12 12:41:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:41:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:41:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3691 transitions. [2022-12-12 12:41:33,983 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.578526645768025 [2022-12-12 12:41:33,983 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1744 predicate places. [2022-12-12 12:41:33,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1875 places, 4121 transitions, 86079 flow [2022-12-12 12:41:34,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1867 places, 4121 transitions, 79019 flow, removed 3406 selfloop flow, removed 8 redundant places. [2022-12-12 12:41:34,351 INFO L495 AbstractCegarLoop]: Abstraction has has 1867 places, 4121 transitions, 79019 flow [2022-12-12 12:41:34,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:34,351 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:41:34,352 INFO L214 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] [2022-12-12 12:41:34,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-12-12 12:41:34,352 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:41:34,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:41:34,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1068762678, now seen corresponding path program 28 times [2022-12-12 12:41:34,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:41:34,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666029191] [2022-12-12 12:41:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:41:34,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:41:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:41:34,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:41:34,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:41:34,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666029191] [2022-12-12 12:41:34,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666029191] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:41:34,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:41:34,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:41:34,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178913010] [2022-12-12 12:41:34,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:41:34,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:41:34,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:41:34,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:41:34,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:41:34,842 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:41:34,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1867 places, 4121 transitions, 79019 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:34,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:41:34,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:41:34,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:41:41,143 INFO L130 PetriNetUnfolder]: 2357/8676 cut-off events. [2022-12-12 12:41:41,143 INFO L131 PetriNetUnfolder]: For 142641/144854 co-relation queries the response was YES. [2022-12-12 12:41:41,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67610 conditions, 8676 events. 2357/8676 cut-off events. For 142641/144854 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 86887 event pairs, 302 based on Foata normal form. 31/8602 useless extension candidates. Maximal degree in co-relation 51150. Up to 2572 conditions per place. [2022-12-12 12:41:41,192 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 901 selfloop transitions, 137 changer transitions 3106/4220 dead transitions. [2022-12-12 12:41:41,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1915 places, 4220 transitions, 89476 flow [2022-12-12 12:41:41,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-12 12:41:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-12 12:41:41,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4087 transitions. [2022-12-12 12:41:41,194 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.575228712174525 [2022-12-12 12:41:41,195 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1784 predicate places. [2022-12-12 12:41:41,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1915 places, 4220 transitions, 89476 flow [2022-12-12 12:41:41,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1907 places, 4220 transitions, 81998 flow, removed 3615 selfloop flow, removed 8 redundant places. [2022-12-12 12:41:41,591 INFO L495 AbstractCegarLoop]: Abstraction has has 1907 places, 4220 transitions, 81998 flow [2022-12-12 12:41:41,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:41,591 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:41:41,591 INFO L214 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] [2022-12-12 12:41:41,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-12-12 12:41:41,591 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:41:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:41:41,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1705018814, now seen corresponding path program 29 times [2022-12-12 12:41:41,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:41:41,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803142290] [2022-12-12 12:41:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:41:41,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:41:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:41:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:41:42,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:41:42,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803142290] [2022-12-12 12:41:42,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803142290] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:41:42,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:41:42,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:41:42,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602864868] [2022-12-12 12:41:42,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:41:42,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:41:42,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:41:42,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:41:42,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:41:42,222 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:41:42,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1907 places, 4220 transitions, 81998 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:42,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:41:42,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:41:42,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:41:48,288 INFO L130 PetriNetUnfolder]: 2376/8772 cut-off events. [2022-12-12 12:41:48,288 INFO L131 PetriNetUnfolder]: For 150631/152965 co-relation queries the response was YES. [2022-12-12 12:41:48,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68927 conditions, 8772 events. 2376/8772 cut-off events. For 150631/152965 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 88115 event pairs, 304 based on Foata normal form. 35/8702 useless extension candidates. Maximal degree in co-relation 52403. Up to 2572 conditions per place. [2022-12-12 12:41:48,331 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 906 selfloop transitions, 142 changer transitions 3157/4281 dead transitions. [2022-12-12 12:41:48,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1949 places, 4281 transitions, 91744 flow [2022-12-12 12:41:48,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-12 12:41:48,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-12 12:41:48,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3614 transitions. [2022-12-12 12:41:48,334 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5796311146752205 [2022-12-12 12:41:48,334 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1818 predicate places. [2022-12-12 12:41:48,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1949 places, 4281 transitions, 91744 flow [2022-12-12 12:41:48,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1941 places, 4281 transitions, 84400 flow, removed 3548 selfloop flow, removed 8 redundant places. [2022-12-12 12:41:48,735 INFO L495 AbstractCegarLoop]: Abstraction has has 1941 places, 4281 transitions, 84400 flow [2022-12-12 12:41:48,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:48,736 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:41:48,736 INFO L214 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] [2022-12-12 12:41:48,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-12-12 12:41:48,736 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:41:48,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:41:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1641880356, now seen corresponding path program 30 times [2022-12-12 12:41:48,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:41:48,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487179316] [2022-12-12 12:41:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:41:48,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:41:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:41:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:41:49,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:41:49,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487179316] [2022-12-12 12:41:49,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487179316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:41:49,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:41:49,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:41:49,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491320213] [2022-12-12 12:41:49,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:41:49,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:41:49,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:41:49,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:41:49,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:41:49,234 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:41:49,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1941 places, 4281 transitions, 84400 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:49,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:41:49,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:41:49,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:41:55,475 INFO L130 PetriNetUnfolder]: 2393/8880 cut-off events. [2022-12-12 12:41:55,475 INFO L131 PetriNetUnfolder]: For 159647/162067 co-relation queries the response was YES. [2022-12-12 12:41:55,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70458 conditions, 8880 events. 2393/8880 cut-off events. For 159647/162067 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 89548 event pairs, 310 based on Foata normal form. 34/8808 useless extension candidates. Maximal degree in co-relation 53886. Up to 2572 conditions per place. [2022-12-12 12:41:55,521 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 908 selfloop transitions, 146 changer transitions 3208/4338 dead transitions. [2022-12-12 12:41:55,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1984 places, 4338 transitions, 94322 flow [2022-12-12 12:41:55,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:41:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:41:55,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3690 transitions. [2022-12-12 12:41:55,523 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5783699059561128 [2022-12-12 12:41:55,523 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1853 predicate places. [2022-12-12 12:41:55,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1984 places, 4338 transitions, 94322 flow [2022-12-12 12:41:55,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1976 places, 4338 transitions, 86810 flow, removed 3632 selfloop flow, removed 8 redundant places. [2022-12-12 12:41:55,948 INFO L495 AbstractCegarLoop]: Abstraction has has 1976 places, 4338 transitions, 86810 flow [2022-12-12 12:41:55,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:55,949 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:41:55,949 INFO L214 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] [2022-12-12 12:41:55,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-12-12 12:41:55,949 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:41:55,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:41:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1785853398, now seen corresponding path program 31 times [2022-12-12 12:41:55,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:41:55,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636992197] [2022-12-12 12:41:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:41:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:41:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:41:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:41:56,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:41:56,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636992197] [2022-12-12 12:41:56,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636992197] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:41:56,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:41:56,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:41:56,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295383517] [2022-12-12 12:41:56,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:41:56,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:41:56,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:41:56,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:41:56,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:41:56,481 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:41:56,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1976 places, 4338 transitions, 86810 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:41:56,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:41:56,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:41:56,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:42:02,686 INFO L130 PetriNetUnfolder]: 2404/8982 cut-off events. [2022-12-12 12:42:02,686 INFO L131 PetriNetUnfolder]: For 167859/170306 co-relation queries the response was YES. [2022-12-12 12:42:02,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71836 conditions, 8982 events. 2404/8982 cut-off events. For 167859/170306 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 90915 event pairs, 309 based on Foata normal form. 38/8911 useless extension candidates. Maximal degree in co-relation 55204. Up to 2572 conditions per place. [2022-12-12 12:42:02,733 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 907 selfloop transitions, 135 changer transitions 3262/4380 dead transitions. [2022-12-12 12:42:02,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2019 places, 4380 transitions, 96648 flow [2022-12-12 12:42:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:42:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:42:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3694 transitions. [2022-12-12 12:42:02,735 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5789968652037617 [2022-12-12 12:42:02,735 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1888 predicate places. [2022-12-12 12:42:02,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2019 places, 4380 transitions, 96648 flow [2022-12-12 12:42:03,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2011 places, 4380 transitions, 89168 flow, removed 3616 selfloop flow, removed 8 redundant places. [2022-12-12 12:42:03,174 INFO L495 AbstractCegarLoop]: Abstraction has has 2011 places, 4380 transitions, 89168 flow [2022-12-12 12:42:03,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:03,174 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:42:03,174 INFO L214 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] [2022-12-12 12:42:03,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-12-12 12:42:03,174 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:42:03,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:42:03,175 INFO L85 PathProgramCache]: Analyzing trace with hash 921621302, now seen corresponding path program 32 times [2022-12-12 12:42:03,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:42:03,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351712811] [2022-12-12 12:42:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:42:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:42:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:42:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:42:03,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:42:03,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351712811] [2022-12-12 12:42:03,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351712811] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:42:03,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:42:03,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:42:03,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3696852] [2022-12-12 12:42:03,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:42:03,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:42:03,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:42:03,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:42:03,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:42:03,754 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:42:03,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2011 places, 4380 transitions, 89168 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:03,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:42:03,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:42:03,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:42:09,927 INFO L130 PetriNetUnfolder]: 2412/9047 cut-off events. [2022-12-12 12:42:09,928 INFO L131 PetriNetUnfolder]: For 178691/181245 co-relation queries the response was YES. [2022-12-12 12:42:09,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73213 conditions, 9047 events. 2412/9047 cut-off events. For 178691/181245 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 91716 event pairs, 309 based on Foata normal form. 34/8974 useless extension candidates. Maximal degree in co-relation 56527. Up to 2572 conditions per place. [2022-12-12 12:42:09,982 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 892 selfloop transitions, 133 changer transitions 3315/4416 dead transitions. [2022-12-12 12:42:09,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2053 places, 4416 transitions, 98999 flow [2022-12-12 12:42:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-12 12:42:09,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-12 12:42:09,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3614 transitions. [2022-12-12 12:42:09,985 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5796311146752205 [2022-12-12 12:42:09,985 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1922 predicate places. [2022-12-12 12:42:09,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2053 places, 4416 transitions, 98999 flow [2022-12-12 12:42:10,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2045 places, 4416 transitions, 91401 flow, removed 3675 selfloop flow, removed 8 redundant places. [2022-12-12 12:42:10,501 INFO L495 AbstractCegarLoop]: Abstraction has has 2045 places, 4416 transitions, 91401 flow [2022-12-12 12:42:10,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:10,502 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:42:10,502 INFO L214 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] [2022-12-12 12:42:10,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-12-12 12:42:10,502 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:42:10,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:42:10,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2043390468, now seen corresponding path program 33 times [2022-12-12 12:42:10,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:42:10,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448273876] [2022-12-12 12:42:10,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:42:10,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:42:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:42:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:42:11,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:42:11,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448273876] [2022-12-12 12:42:11,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448273876] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:42:11,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:42:11,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:42:11,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383488733] [2022-12-12 12:42:11,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:42:11,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:42:11,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:42:11,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:42:11,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:42:11,156 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:42:11,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2045 places, 4416 transitions, 91401 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:11,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:42:11,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:42:11,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:42:17,250 INFO L130 PetriNetUnfolder]: 2417/9073 cut-off events. [2022-12-12 12:42:17,250 INFO L131 PetriNetUnfolder]: For 184775/187183 co-relation queries the response was YES. [2022-12-12 12:42:17,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74450 conditions, 9073 events. 2417/9073 cut-off events. For 184775/187183 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 92097 event pairs, 304 based on Foata normal form. 35/9004 useless extension candidates. Maximal degree in co-relation 57714. Up to 2572 conditions per place. [2022-12-12 12:42:17,301 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 883 selfloop transitions, 113 changer transitions 3377/4449 dead transitions. [2022-12-12 12:42:17,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2092 places, 4449 transitions, 101273 flow [2022-12-12 12:42:17,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-12 12:42:17,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-12 12:42:17,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 4003 transitions. [2022-12-12 12:42:17,304 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5751436781609195 [2022-12-12 12:42:17,304 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 1961 predicate places. [2022-12-12 12:42:17,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2092 places, 4449 transitions, 101273 flow [2022-12-12 12:42:17,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2084 places, 4449 transitions, 93149 flow, removed 3938 selfloop flow, removed 8 redundant places. [2022-12-12 12:42:17,988 INFO L495 AbstractCegarLoop]: Abstraction has has 2084 places, 4449 transitions, 93149 flow [2022-12-12 12:42:17,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:17,989 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:42:17,989 INFO L214 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] [2022-12-12 12:42:17,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-12-12 12:42:17,989 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:42:17,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:42:17,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1330699086, now seen corresponding path program 34 times [2022-12-12 12:42:17,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:42:17,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060190354] [2022-12-12 12:42:17,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:42:17,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:42:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:42:18,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:42:18,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:42:18,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060190354] [2022-12-12 12:42:18,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060190354] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:42:18,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:42:18,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:42:18,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594610600] [2022-12-12 12:42:18,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:42:18,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:42:18,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:42:18,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:42:18,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:42:18,597 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:42:18,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2084 places, 4449 transitions, 93149 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:18,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:42:18,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:42:18,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:42:25,659 INFO L130 PetriNetUnfolder]: 2434/9142 cut-off events. [2022-12-12 12:42:25,659 INFO L131 PetriNetUnfolder]: For 194949/197344 co-relation queries the response was YES. [2022-12-12 12:42:25,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75878 conditions, 9142 events. 2434/9142 cut-off events. For 194949/197344 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 92876 event pairs, 306 based on Foata normal form. 34/9071 useless extension candidates. Maximal degree in co-relation 59100. Up to 2572 conditions per place. [2022-12-12 12:42:25,704 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 835 selfloop transitions, 149 changer transitions 3446/4506 dead transitions. [2022-12-12 12:42:25,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2136 places, 4506 transitions, 103791 flow [2022-12-12 12:42:25,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-12 12:42:25,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-12-12 12:42:25,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 4394 transitions. [2022-12-12 12:42:25,707 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5717631750162655 [2022-12-12 12:42:25,708 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2005 predicate places. [2022-12-12 12:42:25,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2136 places, 4506 transitions, 103791 flow [2022-12-12 12:42:26,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2128 places, 4506 transitions, 95581 flow, removed 3981 selfloop flow, removed 8 redundant places. [2022-12-12 12:42:26,219 INFO L495 AbstractCegarLoop]: Abstraction has has 2128 places, 4506 transitions, 95581 flow [2022-12-12 12:42:26,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:26,219 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:42:26,219 INFO L214 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] [2022-12-12 12:42:26,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-12-12 12:42:26,219 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:42:26,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:42:26,219 INFO L85 PathProgramCache]: Analyzing trace with hash 46912266, now seen corresponding path program 35 times [2022-12-12 12:42:26,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:42:26,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216516803] [2022-12-12 12:42:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:42:26,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:42:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:42:26,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:42:26,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:42:26,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216516803] [2022-12-12 12:42:26,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216516803] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:42:26,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:42:26,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:42:26,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935339977] [2022-12-12 12:42:26,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:42:26,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:42:26,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:42:26,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:42:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:42:26,754 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:42:26,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2128 places, 4506 transitions, 95581 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:26,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:42:26,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:42:26,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:42:33,293 INFO L130 PetriNetUnfolder]: 2477/9283 cut-off events. [2022-12-12 12:42:33,293 INFO L131 PetriNetUnfolder]: For 208595/211156 co-relation queries the response was YES. [2022-12-12 12:42:33,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77851 conditions, 9283 events. 2477/9283 cut-off events. For 208595/211156 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 94547 event pairs, 310 based on Foata normal form. 34/9202 useless extension candidates. Maximal degree in co-relation 61023. Up to 2572 conditions per place. [2022-12-12 12:42:33,342 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 855 selfloop transitions, 157 changer transitions 3504/4592 dead transitions. [2022-12-12 12:42:33,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2177 places, 4592 transitions, 107112 flow [2022-12-12 12:42:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-12 12:42:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-12 12:42:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4156 transitions. [2022-12-12 12:42:33,345 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5732413793103448 [2022-12-12 12:42:33,345 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2046 predicate places. [2022-12-12 12:42:33,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2177 places, 4592 transitions, 107112 flow [2022-12-12 12:42:33,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2169 places, 4592 transitions, 99200 flow, removed 3832 selfloop flow, removed 8 redundant places. [2022-12-12 12:42:33,843 INFO L495 AbstractCegarLoop]: Abstraction has has 2169 places, 4592 transitions, 99200 flow [2022-12-12 12:42:33,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:33,844 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:42:33,844 INFO L214 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] [2022-12-12 12:42:33,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-12-12 12:42:33,844 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:42:33,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:42:33,844 INFO L85 PathProgramCache]: Analyzing trace with hash 365607592, now seen corresponding path program 36 times [2022-12-12 12:42:33,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:42:33,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637673080] [2022-12-12 12:42:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:42:33,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:42:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:42:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:42:34,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:42:34,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637673080] [2022-12-12 12:42:34,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637673080] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:42:34,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:42:34,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:42:34,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266787366] [2022-12-12 12:42:34,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:42:34,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:42:34,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:42:34,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:42:34,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:42:34,388 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:42:34,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2169 places, 4592 transitions, 99200 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:34,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:42:34,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:42:34,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:42:40,767 INFO L130 PetriNetUnfolder]: 2479/9363 cut-off events. [2022-12-12 12:42:40,767 INFO L131 PetriNetUnfolder]: For 213135/215524 co-relation queries the response was YES. [2022-12-12 12:42:40,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79534 conditions, 9363 events. 2479/9363 cut-off events. For 213135/215524 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 95764 event pairs, 308 based on Foata normal form. 34/9291 useless extension candidates. Maximal degree in co-relation 62654. Up to 2572 conditions per place. [2022-12-12 12:42:40,815 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 855 selfloop transitions, 156 changer transitions 3556/4643 dead transitions. [2022-12-12 12:42:40,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2210 places, 4643 transitions, 110202 flow [2022-12-12 12:42:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-12 12:42:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-12 12:42:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3531 transitions. [2022-12-12 12:42:40,817 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5798029556650246 [2022-12-12 12:42:40,818 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2079 predicate places. [2022-12-12 12:42:40,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2210 places, 4643 transitions, 110202 flow [2022-12-12 12:42:41,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2202 places, 4643 transitions, 102378 flow, removed 3788 selfloop flow, removed 8 redundant places. [2022-12-12 12:42:41,370 INFO L495 AbstractCegarLoop]: Abstraction has has 2202 places, 4643 transitions, 102378 flow [2022-12-12 12:42:41,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:41,371 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:42:41,371 INFO L214 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] [2022-12-12 12:42:41,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-12-12 12:42:41,371 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:42:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:42:41,371 INFO L85 PathProgramCache]: Analyzing trace with hash -616213998, now seen corresponding path program 37 times [2022-12-12 12:42:41,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:42:41,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013195833] [2022-12-12 12:42:41,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:42:41,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:42:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:42:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:42:41,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:42:41,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013195833] [2022-12-12 12:42:41,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013195833] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:42:41,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:42:41,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:42:41,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290807891] [2022-12-12 12:42:41,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:42:41,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:42:41,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:42:41,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:42:41,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:42:41,933 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:42:41,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2202 places, 4643 transitions, 102378 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:41,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:42:41,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:42:41,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:42:48,622 INFO L130 PetriNetUnfolder]: 2495/9400 cut-off events. [2022-12-12 12:42:48,622 INFO L131 PetriNetUnfolder]: For 224488/227231 co-relation queries the response was YES. [2022-12-12 12:42:48,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80934 conditions, 9400 events. 2495/9400 cut-off events. For 224488/227231 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 96148 event pairs, 309 based on Foata normal form. 37/9329 useless extension candidates. Maximal degree in co-relation 63998. Up to 2572 conditions per place. [2022-12-12 12:42:48,673 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 843 selfloop transitions, 138 changer transitions 3611/4668 dead transitions. [2022-12-12 12:42:48,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2245 places, 4668 transitions, 112633 flow [2022-12-12 12:42:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:42:48,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:42:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3685 transitions. [2022-12-12 12:42:48,675 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2022-12-12 12:42:48,676 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2114 predicate places. [2022-12-12 12:42:48,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2245 places, 4668 transitions, 112633 flow [2022-12-12 12:42:49,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2237 places, 4668 transitions, 105075 flow, removed 3655 selfloop flow, removed 8 redundant places. [2022-12-12 12:42:49,194 INFO L495 AbstractCegarLoop]: Abstraction has has 2237 places, 4668 transitions, 105075 flow [2022-12-12 12:42:49,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:49,195 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:42:49,195 INFO L214 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] [2022-12-12 12:42:49,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-12-12 12:42:49,195 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:42:49,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:42:49,195 INFO L85 PathProgramCache]: Analyzing trace with hash -98826872, now seen corresponding path program 38 times [2022-12-12 12:42:49,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:42:49,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427336351] [2022-12-12 12:42:49,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:42:49,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:42:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:42:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:42:49,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:42:49,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427336351] [2022-12-12 12:42:49,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427336351] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:42:49,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:42:49,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:42:49,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492447842] [2022-12-12 12:42:49,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:42:49,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:42:49,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:42:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:42:49,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:42:49,720 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:42:49,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2237 places, 4668 transitions, 105075 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:49,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:42:49,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:42:49,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:42:56,859 INFO L130 PetriNetUnfolder]: 2496/9487 cut-off events. [2022-12-12 12:42:56,859 INFO L131 PetriNetUnfolder]: For 232668/235091 co-relation queries the response was YES. [2022-12-12 12:42:56,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83010 conditions, 9487 events. 2496/9487 cut-off events. For 232668/235091 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 97548 event pairs, 303 based on Foata normal form. 29/9404 useless extension candidates. Maximal degree in co-relation 66028. Up to 2572 conditions per place. [2022-12-12 12:42:56,916 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 844 selfloop transitions, 133 changer transitions 3669/4722 dead transitions. [2022-12-12 12:42:56,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2285 places, 4722 transitions, 116494 flow [2022-12-12 12:42:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-12 12:42:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-12 12:42:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4079 transitions. [2022-12-12 12:42:56,918 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5741027445460943 [2022-12-12 12:42:56,919 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2154 predicate places. [2022-12-12 12:42:56,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2285 places, 4722 transitions, 116494 flow [2022-12-12 12:42:57,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2277 places, 4722 transitions, 107880 flow, removed 4183 selfloop flow, removed 8 redundant places. [2022-12-12 12:42:57,560 INFO L495 AbstractCegarLoop]: Abstraction has has 2277 places, 4722 transitions, 107880 flow [2022-12-12 12:42:57,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:57,560 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:42:57,560 INFO L214 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] [2022-12-12 12:42:57,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-12-12 12:42:57,560 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:42:57,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:42:57,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1726616482, now seen corresponding path program 39 times [2022-12-12 12:42:57,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:42:57,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489507509] [2022-12-12 12:42:57,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:42:57,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:42:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:42:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:42:58,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:42:58,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489507509] [2022-12-12 12:42:58,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489507509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:42:58,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:42:58,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:42:58,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102076913] [2022-12-12 12:42:58,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:42:58,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:42:58,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:42:58,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:42:58,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:42:58,318 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:42:58,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2277 places, 4722 transitions, 107880 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:42:58,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:42:58,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:42:58,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:05,220 INFO L130 PetriNetUnfolder]: 2515/9600 cut-off events. [2022-12-12 12:43:05,220 INFO L131 PetriNetUnfolder]: For 247193/249776 co-relation queries the response was YES. [2022-12-12 12:43:05,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84669 conditions, 9600 events. 2515/9600 cut-off events. For 247193/249776 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 99004 event pairs, 306 based on Foata normal form. 34/9523 useless extension candidates. Maximal degree in co-relation 67627. Up to 2572 conditions per place. [2022-12-12 12:43:05,272 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 849 selfloop transitions, 138 changer transitions 3720/4783 dead transitions. [2022-12-12 12:43:05,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2319 places, 4783 transitions, 119362 flow [2022-12-12 12:43:05,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-12 12:43:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-12 12:43:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3608 transitions. [2022-12-12 12:43:05,275 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5786688051323176 [2022-12-12 12:43:05,275 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2188 predicate places. [2022-12-12 12:43:05,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2319 places, 4783 transitions, 119362 flow [2022-12-12 12:43:05,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2311 places, 4783 transitions, 110988 flow, removed 4063 selfloop flow, removed 8 redundant places. [2022-12-12 12:43:05,914 INFO L495 AbstractCegarLoop]: Abstraction has has 2311 places, 4783 transitions, 110988 flow [2022-12-12 12:43:05,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:05,914 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:43:05,914 INFO L214 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] [2022-12-12 12:43:05,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-12-12 12:43:05,914 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:43:05,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:43:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2048809118, now seen corresponding path program 40 times [2022-12-12 12:43:05,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:43:05,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361674964] [2022-12-12 12:43:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:43:05,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:43:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:43:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:43:06,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:43:06,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361674964] [2022-12-12 12:43:06,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361674964] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:43:06,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:43:06,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:43:06,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955741340] [2022-12-12 12:43:06,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:43:06,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:43:06,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:43:06,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:43:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:43:06,484 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:43:06,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2311 places, 4783 transitions, 110988 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:06,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:43:06,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:43:06,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:13,613 INFO L130 PetriNetUnfolder]: 2530/9699 cut-off events. [2022-12-12 12:43:13,613 INFO L131 PetriNetUnfolder]: For 265223/267704 co-relation queries the response was YES. [2022-12-12 12:43:13,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86523 conditions, 9699 events. 2530/9699 cut-off events. For 265223/267704 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 100472 event pairs, 308 based on Foata normal form. 29/9616 useless extension candidates. Maximal degree in co-relation 69431. Up to 2572 conditions per place. [2022-12-12 12:43:13,674 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 851 selfloop transitions, 134 changer transitions 3773/4834 dead transitions. [2022-12-12 12:43:13,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2354 places, 4834 transitions, 122611 flow [2022-12-12 12:43:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:43:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:43:13,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3688 transitions. [2022-12-12 12:43:13,677 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5780564263322884 [2022-12-12 12:43:13,677 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2223 predicate places. [2022-12-12 12:43:13,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2354 places, 4834 transitions, 122611 flow [2022-12-12 12:43:14,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2346 places, 4834 transitions, 114247 flow, removed 4058 selfloop flow, removed 8 redundant places. [2022-12-12 12:43:14,403 INFO L495 AbstractCegarLoop]: Abstraction has has 2346 places, 4834 transitions, 114247 flow [2022-12-12 12:43:14,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:14,404 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:43:14,404 INFO L214 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] [2022-12-12 12:43:14,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-12-12 12:43:14,404 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:43:14,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:43:14,404 INFO L85 PathProgramCache]: Analyzing trace with hash -955084702, now seen corresponding path program 41 times [2022-12-12 12:43:14,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:43:14,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582007187] [2022-12-12 12:43:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:43:14,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:43:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:43:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:43:14,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:43:14,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582007187] [2022-12-12 12:43:14,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582007187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:43:14,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:43:14,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:43:14,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470336726] [2022-12-12 12:43:14,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:43:14,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:43:14,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:43:14,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:43:14,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:43:14,942 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:43:14,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2346 places, 4834 transitions, 114247 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:14,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:43:14,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:43:14,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:22,656 INFO L130 PetriNetUnfolder]: 2554/9761 cut-off events. [2022-12-12 12:43:22,656 INFO L131 PetriNetUnfolder]: For 274493/276926 co-relation queries the response was YES. [2022-12-12 12:43:22,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88417 conditions, 9761 events. 2554/9761 cut-off events. For 274493/276926 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 101060 event pairs, 313 based on Foata normal form. 39/9687 useless extension candidates. Maximal degree in co-relation 71271. Up to 2572 conditions per place. [2022-12-12 12:43:22,710 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 839 selfloop transitions, 127 changer transitions 3834/4876 dead transitions. [2022-12-12 12:43:22,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2393 places, 4876 transitions, 125865 flow [2022-12-12 12:43:22,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-12 12:43:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-12 12:43:22,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 4003 transitions. [2022-12-12 12:43:22,713 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5751436781609195 [2022-12-12 12:43:22,713 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2262 predicate places. [2022-12-12 12:43:22,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2393 places, 4876 transitions, 125865 flow [2022-12-12 12:43:23,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2385 places, 4876 transitions, 116847 flow, removed 4385 selfloop flow, removed 8 redundant places. [2022-12-12 12:43:23,380 INFO L495 AbstractCegarLoop]: Abstraction has has 2385 places, 4876 transitions, 116847 flow [2022-12-12 12:43:23,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:23,381 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:43:23,381 INFO L214 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] [2022-12-12 12:43:23,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-12-12 12:43:23,381 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:43:23,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:43:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1330947636, now seen corresponding path program 42 times [2022-12-12 12:43:23,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:43:23,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636047306] [2022-12-12 12:43:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:43:23,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:43:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:43:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:43:23,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:43:23,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636047306] [2022-12-12 12:43:23,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636047306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:43:23,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:43:23,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:43:23,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965748123] [2022-12-12 12:43:23,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:43:23,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:43:23,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:43:23,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:43:23,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:43:23,908 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:43:23,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2385 places, 4876 transitions, 116847 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:23,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:43:23,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:43:23,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:31,046 INFO L130 PetriNetUnfolder]: 2565/9792 cut-off events. [2022-12-12 12:43:31,046 INFO L131 PetriNetUnfolder]: For 293731/296197 co-relation queries the response was YES. [2022-12-12 12:43:31,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89765 conditions, 9792 events. 2565/9792 cut-off events. For 293731/296197 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 101532 event pairs, 309 based on Foata normal form. 35/9717 useless extension candidates. Maximal degree in co-relation 72573. Up to 2572 conditions per place. [2022-12-12 12:43:31,110 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 831 selfloop transitions, 126 changer transitions 3886/4919 dead transitions. [2022-12-12 12:43:31,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2427 places, 4919 transitions, 128411 flow [2022-12-12 12:43:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-12 12:43:31,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-12 12:43:31,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3612 transitions. [2022-12-12 12:43:31,112 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5793103448275863 [2022-12-12 12:43:31,112 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2296 predicate places. [2022-12-12 12:43:31,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2427 places, 4919 transitions, 128411 flow [2022-12-12 12:43:31,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2419 places, 4919 transitions, 119887 flow, removed 4138 selfloop flow, removed 8 redundant places. [2022-12-12 12:43:31,962 INFO L495 AbstractCegarLoop]: Abstraction has has 2419 places, 4919 transitions, 119887 flow [2022-12-12 12:43:31,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:31,963 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:43:31,963 INFO L214 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] [2022-12-12 12:43:31,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-12-12 12:43:31,963 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:43:31,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:43:31,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2022111744, now seen corresponding path program 43 times [2022-12-12 12:43:31,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:43:31,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080912842] [2022-12-12 12:43:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:43:31,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:43:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:43:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:43:32,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:43:32,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080912842] [2022-12-12 12:43:32,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080912842] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:43:32,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:43:32,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:43:32,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278899500] [2022-12-12 12:43:32,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:43:32,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:43:32,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:43:32,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:43:32,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:43:32,461 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:43:32,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2419 places, 4919 transitions, 119887 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:32,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:43:32,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:43:32,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:39,691 INFO L130 PetriNetUnfolder]: 2564/9781 cut-off events. [2022-12-12 12:43:39,692 INFO L131 PetriNetUnfolder]: For 307306/309787 co-relation queries the response was YES. [2022-12-12 12:43:39,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90875 conditions, 9781 events. 2564/9781 cut-off events. For 307306/309787 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 101294 event pairs, 308 based on Foata normal form. 33/9705 useless extension candidates. Maximal degree in co-relation 73631. Up to 2572 conditions per place. [2022-12-12 12:43:39,758 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 814 selfloop transitions, 101 changer transitions 3945/4936 dead transitions. [2022-12-12 12:43:39,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2462 places, 4936 transitions, 130552 flow [2022-12-12 12:43:39,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:43:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:43:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3688 transitions. [2022-12-12 12:43:39,760 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5780564263322884 [2022-12-12 12:43:39,760 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2331 predicate places. [2022-12-12 12:43:39,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2462 places, 4936 transitions, 130552 flow [2022-12-12 12:43:40,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2454 places, 4936 transitions, 122064 flow, removed 4120 selfloop flow, removed 8 redundant places. [2022-12-12 12:43:40,671 INFO L495 AbstractCegarLoop]: Abstraction has has 2454 places, 4936 transitions, 122064 flow [2022-12-12 12:43:40,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:40,671 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:43:40,671 INFO L214 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] [2022-12-12 12:43:40,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-12-12 12:43:40,672 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:43:40,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:43:40,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2140362306, now seen corresponding path program 44 times [2022-12-12 12:43:40,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:43:40,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13319743] [2022-12-12 12:43:40,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:43:40,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:43:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:43:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:43:41,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:43:41,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13319743] [2022-12-12 12:43:41,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13319743] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:43:41,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:43:41,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:43:41,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298854024] [2022-12-12 12:43:41,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:43:41,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:43:41,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:43:41,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:43:41,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:43:41,176 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:43:41,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2454 places, 4936 transitions, 122064 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:41,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:43:41,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:43:41,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:49,312 INFO L130 PetriNetUnfolder]: 2605/9955 cut-off events. [2022-12-12 12:43:49,313 INFO L131 PetriNetUnfolder]: For 331940/334539 co-relation queries the response was YES. [2022-12-12 12:43:49,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94911 conditions, 9955 events. 2605/9955 cut-off events. For 331940/334539 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 103773 event pairs, 303 based on Foata normal form. 35/9879 useless extension candidates. Maximal degree in co-relation 77615. Up to 2572 conditions per place. [2022-12-12 12:43:49,380 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 838 selfloop transitions, 129 changer transitions 4017/5060 dead transitions. [2022-12-12 12:43:49,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2508 places, 5060 transitions, 137464 flow [2022-12-12 12:43:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-12 12:43:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-12 12:43:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 4565 transitions. [2022-12-12 12:43:49,383 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5724137931034483 [2022-12-12 12:43:49,384 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2377 predicate places. [2022-12-12 12:43:49,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2508 places, 5060 transitions, 137464 flow [2022-12-12 12:43:50,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2500 places, 5060 transitions, 126380 flow, removed 5418 selfloop flow, removed 8 redundant places. [2022-12-12 12:43:50,341 INFO L495 AbstractCegarLoop]: Abstraction has has 2500 places, 5060 transitions, 126380 flow [2022-12-12 12:43:50,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:50,341 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:43:50,342 INFO L214 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] [2022-12-12 12:43:50,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-12-12 12:43:50,342 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:43:50,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:43:50,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1926446986, now seen corresponding path program 45 times [2022-12-12 12:43:50,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:43:50,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002919445] [2022-12-12 12:43:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:43:50,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:43:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:43:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:43:50,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:43:50,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002919445] [2022-12-12 12:43:50,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002919445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:43:50,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:43:50,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:43:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095671410] [2022-12-12 12:43:50,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:43:50,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:43:50,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:43:50,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:43:50,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:43:50,835 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:43:50,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2500 places, 5060 transitions, 126380 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:43:50,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:43:50,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:43:50,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:43:59,388 INFO L130 PetriNetUnfolder]: 2652/10145 cut-off events. [2022-12-12 12:43:59,389 INFO L131 PetriNetUnfolder]: For 352524/354927 co-relation queries the response was YES. [2022-12-12 12:43:59,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97412 conditions, 10145 events. 2652/10145 cut-off events. For 352524/354927 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 106170 event pairs, 304 based on Foata normal form. 31/10065 useless extension candidates. Maximal degree in co-relation 80068. Up to 2572 conditions per place. [2022-12-12 12:43:59,447 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 857 selfloop transitions, 149 changer transitions 4089/5171 dead transitions. [2022-12-12 12:43:59,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2555 places, 5171 transitions, 141648 flow [2022-12-12 12:43:59,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-12 12:43:59,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-12-12 12:43:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 4639 transitions. [2022-12-12 12:43:59,450 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5713054187192118 [2022-12-12 12:43:59,450 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2424 predicate places. [2022-12-12 12:43:59,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2555 places, 5171 transitions, 141648 flow [2022-12-12 12:44:00,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2547 places, 5171 transitions, 130736 flow, removed 5332 selfloop flow, removed 8 redundant places. [2022-12-12 12:44:00,270 INFO L495 AbstractCegarLoop]: Abstraction has has 2547 places, 5171 transitions, 130736 flow [2022-12-12 12:44:00,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:00,270 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:44:00,270 INFO L214 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] [2022-12-12 12:44:00,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-12-12 12:44:00,271 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:44:00,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:44:00,271 INFO L85 PathProgramCache]: Analyzing trace with hash 954000282, now seen corresponding path program 46 times [2022-12-12 12:44:00,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:44:00,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318133078] [2022-12-12 12:44:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:44:00,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:44:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:44:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:44:00,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:44:00,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318133078] [2022-12-12 12:44:00,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318133078] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:44:00,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:44:00,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:44:00,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312951477] [2022-12-12 12:44:00,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:44:00,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:44:00,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:44:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:44:00,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:44:00,783 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:44:00,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2547 places, 5171 transitions, 130736 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:00,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:44:00,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:44:00,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:44:08,540 INFO L130 PetriNetUnfolder]: 2692/10276 cut-off events. [2022-12-12 12:44:08,541 INFO L131 PetriNetUnfolder]: For 368560/371064 co-relation queries the response was YES. [2022-12-12 12:44:08,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98474 conditions, 10276 events. 2692/10276 cut-off events. For 368560/371064 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 107681 event pairs, 309 based on Foata normal form. 34/10197 useless extension candidates. Maximal degree in co-relation 81072. Up to 2572 conditions per place. [2022-12-12 12:44:08,599 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 876 selfloop transitions, 153 changer transitions 4141/5246 dead transitions. [2022-12-12 12:44:08,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2590 places, 5246 transitions, 143736 flow [2022-12-12 12:44:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:44:08,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:44:08,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3697 transitions. [2022-12-12 12:44:08,602 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5794670846394985 [2022-12-12 12:44:08,602 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2459 predicate places. [2022-12-12 12:44:08,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2590 places, 5246 transitions, 143736 flow [2022-12-12 12:44:09,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2582 places, 5246 transitions, 134140 flow, removed 4674 selfloop flow, removed 8 redundant places. [2022-12-12 12:44:09,486 INFO L495 AbstractCegarLoop]: Abstraction has has 2582 places, 5246 transitions, 134140 flow [2022-12-12 12:44:09,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:09,487 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:44:09,487 INFO L214 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] [2022-12-12 12:44:09,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-12-12 12:44:09,487 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:44:09,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:44:09,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1466366078, now seen corresponding path program 47 times [2022-12-12 12:44:09,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:44:09,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679966350] [2022-12-12 12:44:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:44:09,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:44:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:44:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:44:09,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:44:09,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679966350] [2022-12-12 12:44:09,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679966350] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:44:09,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:44:09,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:44:09,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393865796] [2022-12-12 12:44:09,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:44:09,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:44:09,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:44:09,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:44:09,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:44:09,983 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:44:09,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2582 places, 5246 transitions, 134140 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:09,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:44:09,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:44:09,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:44:17,442 INFO L130 PetriNetUnfolder]: 2698/10381 cut-off events. [2022-12-12 12:44:17,442 INFO L131 PetriNetUnfolder]: For 386678/389367 co-relation queries the response was YES. [2022-12-12 12:44:17,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100268 conditions, 10381 events. 2698/10381 cut-off events. For 386678/389367 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 109415 event pairs, 307 based on Foata normal form. 38/10310 useless extension candidates. Maximal degree in co-relation 82804. Up to 2572 conditions per place. [2022-12-12 12:44:17,502 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 869 selfloop transitions, 167 changer transitions 4193/5305 dead transitions. [2022-12-12 12:44:17,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2625 places, 5305 transitions, 147040 flow [2022-12-12 12:44:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:44:17,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:44:17,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3689 transitions. [2022-12-12 12:44:17,504 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5782131661442006 [2022-12-12 12:44:17,505 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2494 predicate places. [2022-12-12 12:44:17,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2625 places, 5305 transitions, 147040 flow [2022-12-12 12:44:18,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2617 places, 5305 transitions, 137536 flow, removed 4628 selfloop flow, removed 8 redundant places. [2022-12-12 12:44:18,403 INFO L495 AbstractCegarLoop]: Abstraction has has 2617 places, 5305 transitions, 137536 flow [2022-12-12 12:44:18,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:18,403 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:44:18,403 INFO L214 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] [2022-12-12 12:44:18,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-12-12 12:44:18,404 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:44:18,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:44:18,404 INFO L85 PathProgramCache]: Analyzing trace with hash 931169586, now seen corresponding path program 48 times [2022-12-12 12:44:18,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:44:18,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986219534] [2022-12-12 12:44:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:44:18,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:44:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:44:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:44:18,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:44:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986219534] [2022-12-12 12:44:18,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986219534] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:44:18,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:44:18,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:44:18,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282357675] [2022-12-12 12:44:18,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:44:18,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:44:18,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:44:18,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:44:18,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:44:18,898 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:44:18,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2617 places, 5305 transitions, 137536 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:18,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:44:18,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:44:18,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:44:26,368 INFO L130 PetriNetUnfolder]: 2707/10435 cut-off events. [2022-12-12 12:44:26,369 INFO L131 PetriNetUnfolder]: For 409177/411708 co-relation queries the response was YES. [2022-12-12 12:44:26,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102054 conditions, 10435 events. 2707/10435 cut-off events. For 409177/411708 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 110079 event pairs, 305 based on Foata normal form. 36/10361 useless extension candidates. Maximal degree in co-relation 84544. Up to 2572 conditions per place. [2022-12-12 12:44:26,431 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 877 selfloop transitions, 148 changer transitions 4245/5346 dead transitions. [2022-12-12 12:44:26,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2658 places, 5346 transitions, 150239 flow [2022-12-12 12:44:26,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-12 12:44:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-12-12 12:44:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3539 transitions. [2022-12-12 12:44:26,433 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5811165845648604 [2022-12-12 12:44:26,433 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2527 predicate places. [2022-12-12 12:44:26,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2658 places, 5346 transitions, 150239 flow [2022-12-12 12:44:27,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2650 places, 5346 transitions, 140501 flow, removed 4745 selfloop flow, removed 8 redundant places. [2022-12-12 12:44:27,335 INFO L495 AbstractCegarLoop]: Abstraction has has 2650 places, 5346 transitions, 140501 flow [2022-12-12 12:44:27,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:27,335 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:44:27,336 INFO L214 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] [2022-12-12 12:44:27,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-12-12 12:44:27,336 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:44:27,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:44:27,336 INFO L85 PathProgramCache]: Analyzing trace with hash -600607286, now seen corresponding path program 49 times [2022-12-12 12:44:27,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:44:27,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223192172] [2022-12-12 12:44:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:44:27,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:44:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:44:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:44:27,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:44:27,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223192172] [2022-12-12 12:44:27,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223192172] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:44:27,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:44:27,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:44:27,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441883414] [2022-12-12 12:44:27,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:44:27,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:44:27,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:44:27,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:44:27,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:44:27,999 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:44:28,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2650 places, 5346 transitions, 140501 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:28,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:44:28,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:44:28,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:44:35,739 INFO L130 PetriNetUnfolder]: 2727/10482 cut-off events. [2022-12-12 12:44:35,739 INFO L131 PetriNetUnfolder]: For 431822/434216 co-relation queries the response was YES. [2022-12-12 12:44:35,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103698 conditions, 10482 events. 2727/10482 cut-off events. For 431822/434216 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 110601 event pairs, 314 based on Foata normal form. 34/10409 useless extension candidates. Maximal degree in co-relation 86134. Up to 2572 conditions per place. [2022-12-12 12:44:35,808 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 849 selfloop transitions, 151 changer transitions 4305/5381 dead transitions. [2022-12-12 12:44:35,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2699 places, 5381 transitions, 153032 flow [2022-12-12 12:44:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-12 12:44:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-12 12:44:35,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4162 transitions. [2022-12-12 12:44:35,810 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5740689655172414 [2022-12-12 12:44:35,810 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2568 predicate places. [2022-12-12 12:44:35,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2699 places, 5381 transitions, 153032 flow [2022-12-12 12:44:36,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2691 places, 5381 transitions, 143412 flow, removed 4686 selfloop flow, removed 8 redundant places. [2022-12-12 12:44:36,977 INFO L495 AbstractCegarLoop]: Abstraction has has 2691 places, 5381 transitions, 143412 flow [2022-12-12 12:44:36,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:36,978 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:44:36,978 INFO L214 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] [2022-12-12 12:44:36,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-12-12 12:44:36,978 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:44:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:44:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2059358534, now seen corresponding path program 50 times [2022-12-12 12:44:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:44:36,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379411436] [2022-12-12 12:44:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:44:36,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:44:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:44:37,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:44:37,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:44:37,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379411436] [2022-12-12 12:44:37,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379411436] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:44:37,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:44:37,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:44:37,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553304195] [2022-12-12 12:44:37,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:44:37,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:44:37,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:44:37,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:44:37,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:44:37,517 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:44:37,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2691 places, 5381 transitions, 143412 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:37,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:44:37,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:44:37,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:44:45,945 INFO L130 PetriNetUnfolder]: 2741/10548 cut-off events. [2022-12-12 12:44:45,945 INFO L131 PetriNetUnfolder]: For 451453/454062 co-relation queries the response was YES. [2022-12-12 12:44:45,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105676 conditions, 10548 events. 2741/10548 cut-off events. For 451453/454062 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 111509 event pairs, 310 based on Foata normal form. 36/10475 useless extension candidates. Maximal degree in co-relation 88070. Up to 2572 conditions per place. [2022-12-12 12:44:46,009 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 856 selfloop transitions, 129 changer transitions 4368/5429 dead transitions. [2022-12-12 12:44:46,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2740 places, 5429 transitions, 156563 flow [2022-12-12 12:44:46,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-12 12:44:46,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-12 12:44:46,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4170 transitions. [2022-12-12 12:44:46,012 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5751724137931035 [2022-12-12 12:44:46,012 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2609 predicate places. [2022-12-12 12:44:46,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2740 places, 5429 transitions, 156563 flow [2022-12-12 12:44:46,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2732 places, 5429 transitions, 146637 flow, removed 4839 selfloop flow, removed 8 redundant places. [2022-12-12 12:44:46,994 INFO L495 AbstractCegarLoop]: Abstraction has has 2732 places, 5429 transitions, 146637 flow [2022-12-12 12:44:46,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:46,994 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:44:46,994 INFO L214 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] [2022-12-12 12:44:46,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-12-12 12:44:46,995 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:44:46,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:44:46,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1496818356, now seen corresponding path program 51 times [2022-12-12 12:44:46,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:44:46,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052729223] [2022-12-12 12:44:46,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:44:46,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:44:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:44:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:44:47,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:44:47,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052729223] [2022-12-12 12:44:47,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052729223] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:44:47,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:44:47,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:44:47,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228982770] [2022-12-12 12:44:47,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:44:47,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:44:47,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:44:47,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:44:47,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:44:47,635 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:44:47,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2732 places, 5429 transitions, 146637 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:47,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:44:47,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:44:47,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:44:56,185 INFO L130 PetriNetUnfolder]: 2743/10582 cut-off events. [2022-12-12 12:44:56,185 INFO L131 PetriNetUnfolder]: For 474993/477380 co-relation queries the response was YES. [2022-12-12 12:44:56,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107491 conditions, 10582 events. 2743/10582 cut-off events. For 474993/477380 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 112025 event pairs, 307 based on Foata normal form. 31/10507 useless extension candidates. Maximal degree in co-relation 89829. Up to 2572 conditions per place. [2022-12-12 12:44:56,247 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 834 selfloop transitions, 142 changer transitions 4428/5480 dead transitions. [2022-12-12 12:44:56,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2780 places, 5480 transitions, 160036 flow [2022-12-12 12:44:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-12 12:44:56,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-12 12:44:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4087 transitions. [2022-12-12 12:44:56,249 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.575228712174525 [2022-12-12 12:44:56,250 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2649 predicate places. [2022-12-12 12:44:56,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2780 places, 5480 transitions, 160036 flow [2022-12-12 12:44:57,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2772 places, 5480 transitions, 149500 flow, removed 5144 selfloop flow, removed 8 redundant places. [2022-12-12 12:44:57,281 INFO L495 AbstractCegarLoop]: Abstraction has has 2772 places, 5480 transitions, 149500 flow [2022-12-12 12:44:57,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:57,282 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:44:57,282 INFO L214 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] [2022-12-12 12:44:57,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-12-12 12:44:57,282 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:44:57,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:44:57,282 INFO L85 PathProgramCache]: Analyzing trace with hash -56006478, now seen corresponding path program 52 times [2022-12-12 12:44:57,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:44:57,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389060187] [2022-12-12 12:44:57,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:44:57,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:44:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:44:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:44:57,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:44:57,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389060187] [2022-12-12 12:44:57,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389060187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:44:57,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:44:57,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:44:57,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280926329] [2022-12-12 12:44:57,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:44:57,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:44:57,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:44:57,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:44:57,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:44:57,903 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:44:57,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2772 places, 5480 transitions, 149500 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:44:57,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:44:57,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:44:57,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:45:05,849 INFO L130 PetriNetUnfolder]: 2777/10744 cut-off events. [2022-12-12 12:45:05,850 INFO L131 PetriNetUnfolder]: For 504977/507352 co-relation queries the response was YES. [2022-12-12 12:45:05,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109474 conditions, 10744 events. 2777/10744 cut-off events. For 504977/507352 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 114140 event pairs, 310 based on Foata normal form. 28/10657 useless extension candidates. Maximal degree in co-relation 91768. Up to 2572 conditions per place. [2022-12-12 12:45:05,924 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 832 selfloop transitions, 158 changer transitions 4479/5545 dead transitions. [2022-12-12 12:45:05,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2815 places, 5545 transitions, 163314 flow [2022-12-12 12:45:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:45:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:45:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3690 transitions. [2022-12-12 12:45:05,927 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5783699059561128 [2022-12-12 12:45:05,928 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2684 predicate places. [2022-12-12 12:45:05,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2815 places, 5545 transitions, 163314 flow [2022-12-12 12:45:07,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2807 places, 5545 transitions, 153108 flow, removed 4979 selfloop flow, removed 8 redundant places. [2022-12-12 12:45:07,260 INFO L495 AbstractCegarLoop]: Abstraction has has 2807 places, 5545 transitions, 153108 flow [2022-12-12 12:45:07,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:45:07,260 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:45:07,260 INFO L214 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] [2022-12-12 12:45:07,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-12-12 12:45:07,261 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:45:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:45:07,261 INFO L85 PathProgramCache]: Analyzing trace with hash -819389194, now seen corresponding path program 53 times [2022-12-12 12:45:07,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:45:07,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043938690] [2022-12-12 12:45:07,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:45:07,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:45:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:45:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:45:07,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:45:07,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043938690] [2022-12-12 12:45:07,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043938690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:45:07,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:45:07,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:45:07,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403896493] [2022-12-12 12:45:07,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:45:07,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:45:07,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:45:07,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:45:07,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:45:07,800 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:45:07,801 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2807 places, 5545 transitions, 153108 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:45:07,801 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:45:07,801 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:45:07,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:45:16,308 INFO L130 PetriNetUnfolder]: 2794/10839 cut-off events. [2022-12-12 12:45:16,309 INFO L131 PetriNetUnfolder]: For 528509/531068 co-relation queries the response was YES. [2022-12-12 12:45:16,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111519 conditions, 10839 events. 2794/10839 cut-off events. For 528509/531068 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 115440 event pairs, 307 based on Foata normal form. 35/10765 useless extension candidates. Maximal degree in co-relation 93745. Up to 2572 conditions per place. [2022-12-12 12:45:16,378 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 842 selfloop transitions, 151 changer transitions 4531/5600 dead transitions. [2022-12-12 12:45:16,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2850 places, 5600 transitions, 166927 flow [2022-12-12 12:45:16,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:45:16,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:45:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3694 transitions. [2022-12-12 12:45:16,381 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5789968652037617 [2022-12-12 12:45:16,381 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2719 predicate places. [2022-12-12 12:45:16,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2850 places, 5600 transitions, 166927 flow [2022-12-12 12:45:17,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2842 places, 5600 transitions, 156717 flow, removed 4981 selfloop flow, removed 8 redundant places. [2022-12-12 12:45:17,665 INFO L495 AbstractCegarLoop]: Abstraction has has 2842 places, 5600 transitions, 156717 flow [2022-12-12 12:45:17,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:45:17,665 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:45:17,665 INFO L214 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] [2022-12-12 12:45:17,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-12-12 12:45:17,665 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:45:17,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:45:17,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2044418492, now seen corresponding path program 54 times [2022-12-12 12:45:17,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:45:17,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640677381] [2022-12-12 12:45:17,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:45:17,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:45:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:45:18,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:45:18,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:45:18,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640677381] [2022-12-12 12:45:18,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640677381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:45:18,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:45:18,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:45:18,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538608721] [2022-12-12 12:45:18,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:45:18,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:45:18,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:45:18,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:45:18,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:45:18,196 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:45:18,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2842 places, 5600 transitions, 156717 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:45:18,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:45:18,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:45:18,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:45:26,583 INFO L130 PetriNetUnfolder]: 2780/10832 cut-off events. [2022-12-12 12:45:26,583 INFO L131 PetriNetUnfolder]: For 548524/550991 co-relation queries the response was YES. [2022-12-12 12:45:26,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112781 conditions, 10832 events. 2780/10832 cut-off events. For 548524/550991 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 115600 event pairs, 309 based on Foata normal form. 33/10758 useless extension candidates. Maximal degree in co-relation 94963. Up to 2572 conditions per place. [2022-12-12 12:45:26,655 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 827 selfloop transitions, 132 changer transitions 4586/5621 dead transitions. [2022-12-12 12:45:26,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2882 places, 5621 transitions, 169422 flow [2022-12-12 12:45:26,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-12 12:45:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-12-12 12:45:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3454 transitions. [2022-12-12 12:45:26,657 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5809924306139613 [2022-12-12 12:45:26,658 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2751 predicate places. [2022-12-12 12:45:26,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2882 places, 5621 transitions, 169422 flow [2022-12-12 12:45:28,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2874 places, 5621 transitions, 159392 flow, removed 4891 selfloop flow, removed 8 redundant places. [2022-12-12 12:45:28,051 INFO L495 AbstractCegarLoop]: Abstraction has has 2874 places, 5621 transitions, 159392 flow [2022-12-12 12:45:28,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:45:28,051 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:45:28,051 INFO L214 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] [2022-12-12 12:45:28,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-12-12 12:45:28,051 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:45:28,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:45:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash 19136278, now seen corresponding path program 55 times [2022-12-12 12:45:28,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:45:28,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608862462] [2022-12-12 12:45:28,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:45:28,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:45:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:45:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:45:28,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:45:28,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608862462] [2022-12-12 12:45:28,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608862462] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:45:28,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:45:28,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:45:28,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888580715] [2022-12-12 12:45:28,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:45:28,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:45:28,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:45:28,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:45:28,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:45:28,664 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:45:28,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2874 places, 5621 transitions, 159392 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:45:28,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:45:28,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:45:28,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:45:38,635 INFO L130 PetriNetUnfolder]: 2786/10955 cut-off events. [2022-12-12 12:45:38,635 INFO L131 PetriNetUnfolder]: For 574649/577429 co-relation queries the response was YES. [2022-12-12 12:45:38,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115874 conditions, 10955 events. 2786/10955 cut-off events. For 574649/577429 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 117479 event pairs, 313 based on Foata normal form. 36/10884 useless extension candidates. Maximal degree in co-relation 97998. Up to 2572 conditions per place. [2022-12-12 12:45:38,705 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 817 selfloop transitions, 108 changer transitions 4670/5671 dead transitions. [2022-12-12 12:45:38,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2933 places, 5671 transitions, 174542 flow [2022-12-12 12:45:38,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-12 12:45:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-12-12 12:45:38,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 4964 transitions. [2022-12-12 12:45:38,708 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5705747126436782 [2022-12-12 12:45:38,708 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2802 predicate places. [2022-12-12 12:45:38,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2933 places, 5671 transitions, 174542 flow [2022-12-12 12:45:40,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2925 places, 5671 transitions, 160836 flow, removed 6729 selfloop flow, removed 8 redundant places. [2022-12-12 12:45:40,312 INFO L495 AbstractCegarLoop]: Abstraction has has 2925 places, 5671 transitions, 160836 flow [2022-12-12 12:45:40,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:45:40,313 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:45:40,313 INFO L214 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] [2022-12-12 12:45:40,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-12-12 12:45:40,313 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:45:40,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:45:40,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1965638360, now seen corresponding path program 56 times [2022-12-12 12:45:40,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:45:40,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720271469] [2022-12-12 12:45:40,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:45:40,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:45:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:45:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:45:40,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:45:40,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720271469] [2022-12-12 12:45:40,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720271469] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:45:40,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:45:40,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:45:40,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800346178] [2022-12-12 12:45:40,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:45:40,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:45:40,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:45:40,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:45:40,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:45:40,796 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:45:40,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2925 places, 5671 transitions, 160836 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:45:40,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:45:40,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:45:40,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:45:49,391 INFO L130 PetriNetUnfolder]: 2794/10976 cut-off events. [2022-12-12 12:45:49,391 INFO L131 PetriNetUnfolder]: For 620071/622350 co-relation queries the response was YES. [2022-12-12 12:45:49,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115114 conditions, 10976 events. 2794/10976 cut-off events. For 620071/622350 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 117851 event pairs, 313 based on Foata normal form. 29/10900 useless extension candidates. Maximal degree in co-relation 97198. Up to 2572 conditions per place. [2022-12-12 12:45:49,461 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 800 selfloop transitions, 108 changer transitions 4723/5707 dead transitions. [2022-12-12 12:45:49,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2967 places, 5707 transitions, 174335 flow [2022-12-12 12:45:49,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-12 12:45:49,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-12 12:45:49,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3614 transitions. [2022-12-12 12:45:49,464 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5796311146752205 [2022-12-12 12:45:49,464 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2836 predicate places. [2022-12-12 12:45:49,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 2967 places, 5707 transitions, 174335 flow [2022-12-12 12:45:50,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2959 places, 5707 transitions, 164103 flow, removed 4992 selfloop flow, removed 8 redundant places. [2022-12-12 12:45:50,850 INFO L495 AbstractCegarLoop]: Abstraction has has 2959 places, 5707 transitions, 164103 flow [2022-12-12 12:45:50,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:45:50,850 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:45:50,850 INFO L214 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] [2022-12-12 12:45:50,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-12-12 12:45:50,850 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:45:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:45:50,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1850166232, now seen corresponding path program 57 times [2022-12-12 12:45:50,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:45:50,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120763300] [2022-12-12 12:45:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:45:50,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:45:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:45:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:45:51,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:45:51,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120763300] [2022-12-12 12:45:51,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120763300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:45:51,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:45:51,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:45:51,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806367132] [2022-12-12 12:45:51,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:45:51,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:45:51,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:45:51,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:45:51,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:45:51,420 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:45:51,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2959 places, 5707 transitions, 164103 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:45:51,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:45:51,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:45:51,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:46:00,192 INFO L130 PetriNetUnfolder]: 2803/10989 cut-off events. [2022-12-12 12:46:00,192 INFO L131 PetriNetUnfolder]: For 651735/654016 co-relation queries the response was YES. [2022-12-12 12:46:00,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117037 conditions, 10989 events. 2803/10989 cut-off events. For 651735/654016 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 117993 event pairs, 310 based on Foata normal form. 28/10911 useless extension candidates. Maximal degree in co-relation 99071. Up to 2572 conditions per place. [2022-12-12 12:46:00,269 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 799 selfloop transitions, 96 changer transitions 4776/5747 dead transitions. [2022-12-12 12:46:00,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3001 places, 5747 transitions, 177932 flow [2022-12-12 12:46:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-12 12:46:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-12 12:46:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3614 transitions. [2022-12-12 12:46:00,272 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5796311146752205 [2022-12-12 12:46:00,272 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2870 predicate places. [2022-12-12 12:46:00,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3001 places, 5747 transitions, 177932 flow [2022-12-12 12:46:01,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 2993 places, 5747 transitions, 167384 flow, removed 5150 selfloop flow, removed 8 redundant places. [2022-12-12 12:46:01,826 INFO L495 AbstractCegarLoop]: Abstraction has has 2993 places, 5747 transitions, 167384 flow [2022-12-12 12:46:01,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:46:01,826 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:46:01,826 INFO L214 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] [2022-12-12 12:46:01,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-12-12 12:46:01,826 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:46:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:46:01,827 INFO L85 PathProgramCache]: Analyzing trace with hash -87996882, now seen corresponding path program 58 times [2022-12-12 12:46:01,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:46:01,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487549200] [2022-12-12 12:46:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:46:01,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:46:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:46:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:46:02,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:46:02,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487549200] [2022-12-12 12:46:02,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487549200] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:46:02,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:46:02,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:46:02,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702930705] [2022-12-12 12:46:02,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:46:02,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:46:02,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:46:02,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:46:02,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:46:02,369 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:46:02,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2993 places, 5747 transitions, 167384 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:46:02,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:46:02,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:46:02,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:46:11,773 INFO L130 PetriNetUnfolder]: 2803/11037 cut-off events. [2022-12-12 12:46:11,774 INFO L131 PetriNetUnfolder]: For 670106/672501 co-relation queries the response was YES. [2022-12-12 12:46:11,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117522 conditions, 11037 events. 2803/11037 cut-off events. For 670106/672501 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 118608 event pairs, 309 based on Foata normal form. 31/10956 useless extension candidates. Maximal degree in co-relation 99492. Up to 2572 conditions per place. [2022-12-12 12:46:11,847 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 757 selfloop transitions, 71 changer transitions 4842/5746 dead transitions. [2022-12-12 12:46:11,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3039 places, 5746 transitions, 178556 flow [2022-12-12 12:46:11,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-12 12:46:11,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-12-12 12:46:11,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3926 transitions. [2022-12-12 12:46:11,849 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5760821716801174 [2022-12-12 12:46:11,850 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2908 predicate places. [2022-12-12 12:46:11,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3039 places, 5746 transitions, 178556 flow [2022-12-12 12:46:13,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3031 places, 5746 transitions, 167692 flow, removed 5308 selfloop flow, removed 8 redundant places. [2022-12-12 12:46:13,257 INFO L495 AbstractCegarLoop]: Abstraction has has 3031 places, 5746 transitions, 167692 flow [2022-12-12 12:46:13,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:46:13,258 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:46:13,258 INFO L214 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] [2022-12-12 12:46:13,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-12-12 12:46:13,258 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:46:13,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:46:13,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1373356200, now seen corresponding path program 59 times [2022-12-12 12:46:13,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:46:13,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683028997] [2022-12-12 12:46:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:46:13,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:46:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:46:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:46:13,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:46:13,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683028997] [2022-12-12 12:46:13,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683028997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:46:13,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:46:13,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:46:13,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203510673] [2022-12-12 12:46:13,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:46:13,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:46:13,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:46:13,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:46:13,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:46:13,907 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:46:13,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3031 places, 5746 transitions, 167692 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:46:13,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:46:13,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:46:13,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:46:24,156 INFO L130 PetriNetUnfolder]: 2975/11563 cut-off events. [2022-12-12 12:46:24,157 INFO L131 PetriNetUnfolder]: For 713865/716444 co-relation queries the response was YES. [2022-12-12 12:46:24,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123665 conditions, 11563 events. 2975/11563 cut-off events. For 713865/716444 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 124502 event pairs, 304 based on Foata normal form. 47/11498 useless extension candidates. Maximal degree in co-relation 105581. Up to 2572 conditions per place. [2022-12-12 12:46:24,232 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 993 selfloop transitions, 128 changer transitions 4914/6111 dead transitions. [2022-12-12 12:46:24,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3085 places, 6111 transitions, 188756 flow [2022-12-12 12:46:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-12 12:46:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-12 12:46:24,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 4575 transitions. [2022-12-12 12:46:24,235 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5736677115987461 [2022-12-12 12:46:24,235 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2954 predicate places. [2022-12-12 12:46:24,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3085 places, 6111 transitions, 188756 flow [2022-12-12 12:46:25,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3078 places, 6111 transitions, 178724 flow, removed 4904 selfloop flow, removed 7 redundant places. [2022-12-12 12:46:25,860 INFO L495 AbstractCegarLoop]: Abstraction has has 3078 places, 6111 transitions, 178724 flow [2022-12-12 12:46:25,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:46:25,860 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:46:25,860 INFO L214 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] [2022-12-12 12:46:25,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-12-12 12:46:25,860 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:46:25,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:46:25,861 INFO L85 PathProgramCache]: Analyzing trace with hash -229216748, now seen corresponding path program 60 times [2022-12-12 12:46:25,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:46:25,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335890402] [2022-12-12 12:46:25,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:46:25,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:46:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:46:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:46:26,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:46:26,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335890402] [2022-12-12 12:46:26,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335890402] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:46:26,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:46:26,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:46:26,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500647880] [2022-12-12 12:46:26,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:46:26,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:46:26,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:46:26,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:46:26,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:46:26,391 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:46:26,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3078 places, 6111 transitions, 178724 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:46:26,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:46:26,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:46:26,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:46:36,489 INFO L130 PetriNetUnfolder]: 3018/11645 cut-off events. [2022-12-12 12:46:36,489 INFO L131 PetriNetUnfolder]: For 730846/733247 co-relation queries the response was YES. [2022-12-12 12:46:36,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126237 conditions, 11645 events. 3018/11645 cut-off events. For 730846/733247 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 125423 event pairs, 305 based on Foata normal form. 48/11578 useless extension candidates. Maximal degree in co-relation 108113. Up to 2572 conditions per place. [2022-12-12 12:46:36,596 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1009 selfloop transitions, 140 changer transitions 4972/6197 dead transitions. [2022-12-12 12:46:36,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3128 places, 6197 transitions, 192943 flow [2022-12-12 12:46:36,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-12 12:46:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-12 12:46:36,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 4260 transitions. [2022-12-12 12:46:36,599 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5760649087221096 [2022-12-12 12:46:36,599 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 2997 predicate places. [2022-12-12 12:46:36,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3128 places, 6197 transitions, 192943 flow [2022-12-12 12:46:38,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3120 places, 6197 transitions, 182357 flow, removed 5171 selfloop flow, removed 8 redundant places. [2022-12-12 12:46:38,274 INFO L495 AbstractCegarLoop]: Abstraction has has 3120 places, 6197 transitions, 182357 flow [2022-12-12 12:46:38,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:46:38,274 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:46:38,274 INFO L214 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] [2022-12-12 12:46:38,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-12-12 12:46:38,275 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:46:38,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:46:38,275 INFO L85 PathProgramCache]: Analyzing trace with hash 756133432, now seen corresponding path program 61 times [2022-12-12 12:46:38,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:46:38,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510206357] [2022-12-12 12:46:38,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:46:38,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:46:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:46:38,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:46:38,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:46:38,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510206357] [2022-12-12 12:46:38,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510206357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:46:38,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:46:38,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:46:38,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801783965] [2022-12-12 12:46:38,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:46:38,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:46:38,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:46:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:46:38,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:46:38,985 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:46:38,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3120 places, 6197 transitions, 182357 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:46:38,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:46:38,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:46:38,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:46:49,890 INFO L130 PetriNetUnfolder]: 3079/11874 cut-off events. [2022-12-12 12:46:49,890 INFO L131 PetriNetUnfolder]: For 756544/758995 co-relation queries the response was YES. [2022-12-12 12:46:49,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129956 conditions, 11874 events. 3079/11874 cut-off events. For 756544/758995 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 128436 event pairs, 307 based on Foata normal form. 32/11793 useless extension candidates. Maximal degree in co-relation 111778. Up to 3588 conditions per place. [2022-12-12 12:46:49,974 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1080 selfloop transitions, 134 changer transitions 5044/6334 dead transitions. [2022-12-12 12:46:49,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3174 places, 6334 transitions, 198837 flow [2022-12-12 12:46:49,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-12 12:46:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-12 12:46:49,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 4586 transitions. [2022-12-12 12:46:49,977 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5750470219435737 [2022-12-12 12:46:49,978 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3043 predicate places. [2022-12-12 12:46:49,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3174 places, 6334 transitions, 198837 flow [2022-12-12 12:46:51,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3166 places, 6334 transitions, 184873 flow, removed 6860 selfloop flow, removed 8 redundant places. [2022-12-12 12:46:51,640 INFO L495 AbstractCegarLoop]: Abstraction has has 3166 places, 6334 transitions, 184873 flow [2022-12-12 12:46:51,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:46:51,640 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:46:51,640 INFO L214 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] [2022-12-12 12:46:51,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-12-12 12:46:51,640 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:46:51,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:46:51,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1983467694, now seen corresponding path program 62 times [2022-12-12 12:46:51,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:46:51,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539761188] [2022-12-12 12:46:51,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:46:51,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:46:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:46:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:46:52,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:46:52,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539761188] [2022-12-12 12:46:52,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539761188] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:46:52,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:46:52,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:46:52,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780416936] [2022-12-12 12:46:52,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:46:52,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:46:52,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:46:52,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:46:52,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:46:52,159 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:46:52,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3166 places, 6334 transitions, 184873 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:46:52,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:46:52,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:46:52,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:47:02,399 INFO L130 PetriNetUnfolder]: 3094/11960 cut-off events. [2022-12-12 12:47:02,400 INFO L131 PetriNetUnfolder]: For 770430/772760 co-relation queries the response was YES. [2022-12-12 12:47:02,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130240 conditions, 11960 events. 3094/11960 cut-off events. For 770430/772760 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 129586 event pairs, 308 based on Foata normal form. 41/11886 useless extension candidates. Maximal degree in co-relation 112000. Up to 2572 conditions per place. [2022-12-12 12:47:02,480 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1068 selfloop transitions, 145 changer transitions 5096/6385 dead transitions. [2022-12-12 12:47:02,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3208 places, 6385 transitions, 199171 flow [2022-12-12 12:47:02,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-12 12:47:02,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-12 12:47:02,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3635 transitions. [2022-12-12 12:47:02,482 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5829991980753809 [2022-12-12 12:47:02,482 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3077 predicate places. [2022-12-12 12:47:02,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3208 places, 6385 transitions, 199171 flow [2022-12-12 12:47:04,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3200 places, 6385 transitions, 188125 flow, removed 5401 selfloop flow, removed 8 redundant places. [2022-12-12 12:47:04,257 INFO L495 AbstractCegarLoop]: Abstraction has has 3200 places, 6385 transitions, 188125 flow [2022-12-12 12:47:04,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:47:04,258 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:47:04,259 INFO L214 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] [2022-12-12 12:47:04,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-12-12 12:47:04,259 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:47:04,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:47:04,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1408904814, now seen corresponding path program 63 times [2022-12-12 12:47:04,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:47:04,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55567422] [2022-12-12 12:47:04,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:47:04,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:47:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:47:04,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:47:04,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:47:04,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55567422] [2022-12-12 12:47:04,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55567422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:47:04,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:47:04,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:47:04,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018153118] [2022-12-12 12:47:04,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:47:04,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:47:04,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:47:04,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:47:04,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:47:04,803 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:47:04,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3200 places, 6385 transitions, 188125 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:47:04,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:47:04,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:47:04,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:47:15,318 INFO L130 PetriNetUnfolder]: 3084/11990 cut-off events. [2022-12-12 12:47:15,318 INFO L131 PetriNetUnfolder]: For 804796/807137 co-relation queries the response was YES. [2022-12-12 12:47:15,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131678 conditions, 11990 events. 3084/11990 cut-off events. For 804796/807137 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 130203 event pairs, 306 based on Foata normal form. 44/11923 useless extension candidates. Maximal degree in co-relation 113394. Up to 2572 conditions per place. [2022-12-12 12:47:15,398 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1056 selfloop transitions, 127 changer transitions 5151/6410 dead transitions. [2022-12-12 12:47:15,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3244 places, 6410 transitions, 201798 flow [2022-12-12 12:47:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-12 12:47:15,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-12 12:47:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3789 transitions. [2022-12-12 12:47:15,400 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5806896551724138 [2022-12-12 12:47:15,401 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3113 predicate places. [2022-12-12 12:47:15,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3244 places, 6410 transitions, 201798 flow [2022-12-12 12:47:17,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3236 places, 6410 transitions, 190936 flow, removed 5309 selfloop flow, removed 8 redundant places. [2022-12-12 12:47:17,072 INFO L495 AbstractCegarLoop]: Abstraction has has 3236 places, 6410 transitions, 190936 flow [2022-12-12 12:47:17,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:47:17,072 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:47:17,073 INFO L214 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] [2022-12-12 12:47:17,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-12-12 12:47:17,073 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:47:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:47:17,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1082525420, now seen corresponding path program 64 times [2022-12-12 12:47:17,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:47:17,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665463768] [2022-12-12 12:47:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:47:17,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:47:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:47:17,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:47:17,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:47:17,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665463768] [2022-12-12 12:47:17,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665463768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:47:17,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:47:17,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:47:17,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178254022] [2022-12-12 12:47:17,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:47:17,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:47:17,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:47:17,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:47:17,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:47:17,618 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:47:17,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3236 places, 6410 transitions, 190936 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:47:17,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:47:17,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:47:17,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:47:27,903 INFO L130 PetriNetUnfolder]: 3121/12101 cut-off events. [2022-12-12 12:47:27,904 INFO L131 PetriNetUnfolder]: For 828160/830738 co-relation queries the response was YES. [2022-12-12 12:47:28,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134268 conditions, 12101 events. 3121/12101 cut-off events. For 828160/830738 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 131655 event pairs, 307 based on Foata normal form. 54/12044 useless extension candidates. Maximal degree in co-relation 115924. Up to 2572 conditions per place. [2022-12-12 12:47:28,192 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1081 selfloop transitions, 148 changer transitions 5202/6507 dead transitions. [2022-12-12 12:47:28,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3280 places, 6507 transitions, 206304 flow [2022-12-12 12:47:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-12 12:47:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-12 12:47:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3792 transitions. [2022-12-12 12:47:28,195 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5811494252873564 [2022-12-12 12:47:28,195 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3149 predicate places. [2022-12-12 12:47:28,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3280 places, 6507 transitions, 206304 flow [2022-12-12 12:47:29,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3272 places, 6507 transitions, 194806 flow, removed 5627 selfloop flow, removed 8 redundant places. [2022-12-12 12:47:29,986 INFO L495 AbstractCegarLoop]: Abstraction has has 3272 places, 6507 transitions, 194806 flow [2022-12-12 12:47:29,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:47:29,986 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:47:29,986 INFO L214 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] [2022-12-12 12:47:29,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-12-12 12:47:29,987 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:47:29,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:47:29,987 INFO L85 PathProgramCache]: Analyzing trace with hash 113685106, now seen corresponding path program 65 times [2022-12-12 12:47:29,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:47:29,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018130732] [2022-12-12 12:47:29,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:47:29,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:47:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:47:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:47:30,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:47:30,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018130732] [2022-12-12 12:47:30,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018130732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:47:30,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:47:30,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:47:30,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111846432] [2022-12-12 12:47:30,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:47:30,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:47:30,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:47:30,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:47:30,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:47:30,498 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:47:30,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3272 places, 6507 transitions, 194806 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:47:30,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:47:30,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:47:30,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:47:41,265 INFO L130 PetriNetUnfolder]: 3148/12202 cut-off events. [2022-12-12 12:47:41,265 INFO L131 PetriNetUnfolder]: For 852422/855017 co-relation queries the response was YES. [2022-12-12 12:47:41,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136419 conditions, 12202 events. 3148/12202 cut-off events. For 852422/855017 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 132974 event pairs, 309 based on Foata normal form. 51/12138 useless extension candidates. Maximal degree in co-relation 118025. Up to 2572 conditions per place. [2022-12-12 12:47:41,347 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1080 selfloop transitions, 144 changer transitions 5255/6555 dead transitions. [2022-12-12 12:47:41,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3315 places, 6555 transitions, 209674 flow [2022-12-12 12:47:41,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:47:41,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:47:41,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3716 transitions. [2022-12-12 12:47:41,349 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5824451410658307 [2022-12-12 12:47:41,349 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3184 predicate places. [2022-12-12 12:47:41,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3315 places, 6555 transitions, 209674 flow [2022-12-12 12:47:43,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3307 places, 6555 transitions, 198268 flow, removed 5581 selfloop flow, removed 8 redundant places. [2022-12-12 12:47:43,114 INFO L495 AbstractCegarLoop]: Abstraction has has 3307 places, 6555 transitions, 198268 flow [2022-12-12 12:47:43,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:47:43,114 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:47:43,114 INFO L214 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] [2022-12-12 12:47:43,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-12-12 12:47:43,114 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:47:43,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:47:43,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2031837566, now seen corresponding path program 66 times [2022-12-12 12:47:43,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:47:43,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705490604] [2022-12-12 12:47:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:47:43,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:47:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:47:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:47:43,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:47:43,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705490604] [2022-12-12 12:47:43,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705490604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:47:43,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:47:43,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:47:43,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501054296] [2022-12-12 12:47:43,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:47:43,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:47:43,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:47:43,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:47:43,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:47:43,678 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:47:43,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3307 places, 6555 transitions, 198268 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:47:43,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:47:43,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:47:43,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:47:54,499 INFO L130 PetriNetUnfolder]: 3154/12268 cut-off events. [2022-12-12 12:47:54,499 INFO L131 PetriNetUnfolder]: For 877176/879555 co-relation queries the response was YES. [2022-12-12 12:47:54,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138623 conditions, 12268 events. 3154/12268 cut-off events. For 877176/879555 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 134053 event pairs, 308 based on Foata normal form. 47/12203 useless extension candidates. Maximal degree in co-relation 120181. Up to 2572 conditions per place. [2022-12-12 12:47:54,584 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1083 selfloop transitions, 148 changer transitions 5307/6614 dead transitions. [2022-12-12 12:47:54,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3351 places, 6614 transitions, 213550 flow [2022-12-12 12:47:54,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-12 12:47:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-12 12:47:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3792 transitions. [2022-12-12 12:47:54,586 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5811494252873564 [2022-12-12 12:47:54,586 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3220 predicate places. [2022-12-12 12:47:54,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3351 places, 6614 transitions, 213550 flow [2022-12-12 12:47:56,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3343 places, 6614 transitions, 201898 flow, removed 5704 selfloop flow, removed 8 redundant places. [2022-12-12 12:47:56,532 INFO L495 AbstractCegarLoop]: Abstraction has has 3343 places, 6614 transitions, 201898 flow [2022-12-12 12:47:56,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:47:56,533 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:47:56,533 INFO L214 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] [2022-12-12 12:47:56,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-12-12 12:47:56,533 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:47:56,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:47:56,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2009115654, now seen corresponding path program 67 times [2022-12-12 12:47:56,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:47:56,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769840076] [2022-12-12 12:47:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:47:56,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:47:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:47:57,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:47:57,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:47:57,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769840076] [2022-12-12 12:47:57,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769840076] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:47:57,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:47:57,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:47:57,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747155674] [2022-12-12 12:47:57,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:47:57,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:47:57,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:47:57,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:47:57,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:47:57,184 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:47:57,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3343 places, 6614 transitions, 201898 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:47:57,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:47:57,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:47:57,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:48:07,776 INFO L130 PetriNetUnfolder]: 3175/12377 cut-off events. [2022-12-12 12:48:07,776 INFO L131 PetriNetUnfolder]: For 898979/901528 co-relation queries the response was YES. [2022-12-12 12:48:07,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140587 conditions, 12377 events. 3175/12377 cut-off events. For 898979/901528 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 135514 event pairs, 310 based on Foata normal form. 34/12299 useless extension candidates. Maximal degree in co-relation 122093. Up to 3798 conditions per place. [2022-12-12 12:48:07,856 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1102 selfloop transitions, 143 changer transitions 5358/6679 dead transitions. [2022-12-12 12:48:07,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3385 places, 6679 transitions, 216902 flow [2022-12-12 12:48:07,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-12 12:48:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-12-12 12:48:07,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3638 transitions. [2022-12-12 12:48:07,859 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5834803528468324 [2022-12-12 12:48:07,859 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3254 predicate places. [2022-12-12 12:48:07,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3385 places, 6679 transitions, 216902 flow [2022-12-12 12:48:09,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3377 places, 6679 transitions, 204092 flow, removed 6283 selfloop flow, removed 8 redundant places. [2022-12-12 12:48:09,771 INFO L495 AbstractCegarLoop]: Abstraction has has 3377 places, 6679 transitions, 204092 flow [2022-12-12 12:48:09,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:48:09,771 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:48:09,771 INFO L214 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] [2022-12-12 12:48:09,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-12-12 12:48:09,772 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:48:09,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:48:09,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1250692038, now seen corresponding path program 68 times [2022-12-12 12:48:09,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:48:09,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091092314] [2022-12-12 12:48:09,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:48:09,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:48:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:48:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:48:10,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:48:10,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091092314] [2022-12-12 12:48:10,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091092314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:48:10,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:48:10,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:48:10,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102338431] [2022-12-12 12:48:10,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:48:10,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:48:10,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:48:10,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:48:10,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:48:10,328 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:48:10,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3377 places, 6679 transitions, 204092 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:48:10,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:48:10,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:48:10,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:48:21,451 INFO L130 PetriNetUnfolder]: 3188/12425 cut-off events. [2022-12-12 12:48:21,451 INFO L131 PetriNetUnfolder]: For 927694/930159 co-relation queries the response was YES. [2022-12-12 12:48:21,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142048 conditions, 12425 events. 3188/12425 cut-off events. For 927694/930159 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 136232 event pairs, 312 based on Foata normal form. 43/12356 useless extension candidates. Maximal degree in co-relation 123500. Up to 2587 conditions per place. [2022-12-12 12:48:21,533 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1094 selfloop transitions, 144 changer transitions 5417/6731 dead transitions. [2022-12-12 12:48:21,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3426 places, 6731 transitions, 219453 flow [2022-12-12 12:48:21,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-12 12:48:21,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-12 12:48:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 4183 transitions. [2022-12-12 12:48:21,536 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5769655172413793 [2022-12-12 12:48:21,536 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3295 predicate places. [2022-12-12 12:48:21,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3426 places, 6731 transitions, 219453 flow [2022-12-12 12:48:23,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3418 places, 6731 transitions, 207747 flow, removed 5731 selfloop flow, removed 8 redundant places. [2022-12-12 12:48:23,473 INFO L495 AbstractCegarLoop]: Abstraction has has 3418 places, 6731 transitions, 207747 flow [2022-12-12 12:48:23,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:48:23,473 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:48:23,473 INFO L214 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] [2022-12-12 12:48:23,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-12-12 12:48:23,473 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:48:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:48:23,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1721135166, now seen corresponding path program 69 times [2022-12-12 12:48:23,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:48:23,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967360181] [2022-12-12 12:48:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:48:23,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:48:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:48:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:48:24,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:48:24,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967360181] [2022-12-12 12:48:24,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967360181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:48:24,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:48:24,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:48:24,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937947278] [2022-12-12 12:48:24,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:48:24,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:48:24,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:48:24,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:48:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:48:24,039 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:48:24,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3418 places, 6731 transitions, 207747 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:48:24,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:48:24,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:48:24,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:48:34,929 INFO L130 PetriNetUnfolder]: 3195/12482 cut-off events. [2022-12-12 12:48:34,929 INFO L131 PetriNetUnfolder]: For 952647/955332 co-relation queries the response was YES. [2022-12-12 12:48:34,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143978 conditions, 12482 events. 3195/12482 cut-off events. For 952647/955332 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 137160 event pairs, 311 based on Foata normal form. 54/12424 useless extension candidates. Maximal degree in co-relation 125374. Up to 2593 conditions per place. [2022-12-12 12:48:35,013 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1084 selfloop transitions, 137 changer transitions 5469/6766 dead transitions. [2022-12-12 12:48:35,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3461 places, 6766 transitions, 222694 flow [2022-12-12 12:48:35,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:48:35,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:48:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3712 transitions. [2022-12-12 12:48:35,016 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2022-12-12 12:48:35,016 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3330 predicate places. [2022-12-12 12:48:35,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3461 places, 6766 transitions, 222694 flow [2022-12-12 12:48:37,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3453 places, 6766 transitions, 211174 flow, removed 5638 selfloop flow, removed 8 redundant places. [2022-12-12 12:48:37,381 INFO L495 AbstractCegarLoop]: Abstraction has has 3453 places, 6766 transitions, 211174 flow [2022-12-12 12:48:37,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:48:37,381 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:48:37,381 INFO L214 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] [2022-12-12 12:48:37,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-12-12 12:48:37,382 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:48:37,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:48:37,382 INFO L85 PathProgramCache]: Analyzing trace with hash -912997650, now seen corresponding path program 70 times [2022-12-12 12:48:37,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:48:37,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863216074] [2022-12-12 12:48:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:48:37,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:48:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:48:37,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:48:37,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:48:37,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863216074] [2022-12-12 12:48:37,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863216074] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:48:37,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:48:37,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:48:37,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528966883] [2022-12-12 12:48:37,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:48:37,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:48:37,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:48:37,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:48:37,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:48:37,908 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:48:37,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3453 places, 6766 transitions, 211174 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:48:37,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:48:37,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:48:37,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:48:49,404 INFO L130 PetriNetUnfolder]: 3222/12572 cut-off events. [2022-12-12 12:48:49,404 INFO L131 PetriNetUnfolder]: For 991123/993622 co-relation queries the response was YES. [2022-12-12 12:48:49,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146679 conditions, 12572 events. 3222/12572 cut-off events. For 991123/993622 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 138405 event pairs, 305 based on Foata normal form. 38/12505 useless extension candidates. Maximal degree in co-relation 128029. Up to 3864 conditions per place. [2022-12-12 12:48:49,487 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1091 selfloop transitions, 145 changer transitions 5529/6841 dead transitions. [2022-12-12 12:48:49,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3503 places, 6841 transitions, 227232 flow [2022-12-12 12:48:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-12 12:48:49,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-12 12:48:49,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 4269 transitions. [2022-12-12 12:48:49,489 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5772819472616633 [2022-12-12 12:48:49,489 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3372 predicate places. [2022-12-12 12:48:49,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3503 places, 6841 transitions, 227232 flow [2022-12-12 12:48:51,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3495 places, 6841 transitions, 214070 flow, removed 6459 selfloop flow, removed 8 redundant places. [2022-12-12 12:48:51,389 INFO L495 AbstractCegarLoop]: Abstraction has has 3495 places, 6841 transitions, 214070 flow [2022-12-12 12:48:51,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:48:51,390 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:48:51,390 INFO L214 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] [2022-12-12 12:48:51,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-12-12 12:48:51,390 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:48:51,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:48:51,391 INFO L85 PathProgramCache]: Analyzing trace with hash -545551796, now seen corresponding path program 71 times [2022-12-12 12:48:51,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:48:51,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583553594] [2022-12-12 12:48:51,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:48:51,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:48:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:48:51,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:48:51,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:48:51,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583553594] [2022-12-12 12:48:51,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583553594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:48:51,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:48:51,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:48:51,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885086352] [2022-12-12 12:48:51,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:48:51,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:48:51,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:48:51,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:48:51,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:48:51,908 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:48:51,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3495 places, 6841 transitions, 214070 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:48:51,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:48:51,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:48:51,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:49:02,922 INFO L130 PetriNetUnfolder]: 3231/12679 cut-off events. [2022-12-12 12:49:02,922 INFO L131 PetriNetUnfolder]: For 1013899/1016458 co-relation queries the response was YES. [2022-12-12 12:49:02,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148247 conditions, 12679 events. 3231/12679 cut-off events. For 1013899/1016458 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 140066 event pairs, 308 based on Foata normal form. 54/12627 useless extension candidates. Maximal degree in co-relation 129541. Up to 2596 conditions per place. [2022-12-12 12:49:03,008 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1092 selfloop transitions, 117 changer transitions 5593/6878 dead transitions. [2022-12-12 12:49:03,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3543 places, 6878 transitions, 229700 flow [2022-12-12 12:49:03,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-12 12:49:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-12 12:49:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4107 transitions. [2022-12-12 12:49:03,011 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5780436312456017 [2022-12-12 12:49:03,011 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3412 predicate places. [2022-12-12 12:49:03,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3543 places, 6878 transitions, 229700 flow [2022-12-12 12:49:04,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3535 places, 6878 transitions, 217416 flow, removed 6020 selfloop flow, removed 8 redundant places. [2022-12-12 12:49:04,946 INFO L495 AbstractCegarLoop]: Abstraction has has 3535 places, 6878 transitions, 217416 flow [2022-12-12 12:49:04,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:49:04,947 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:49:04,947 INFO L214 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] [2022-12-12 12:49:04,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-12-12 12:49:04,947 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:49:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:49:04,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1483813460, now seen corresponding path program 72 times [2022-12-12 12:49:04,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:49:04,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050678043] [2022-12-12 12:49:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:49:04,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:49:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:49:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:49:05,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:49:05,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050678043] [2022-12-12 12:49:05,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050678043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:49:05,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:49:05,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:49:05,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085806186] [2022-12-12 12:49:05,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:49:05,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:49:05,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:49:05,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:49:05,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:49:05,599 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:49:05,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3535 places, 6878 transitions, 217416 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:49:05,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:49:05,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:49:05,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:49:16,758 INFO L130 PetriNetUnfolder]: 3233/12720 cut-off events. [2022-12-12 12:49:16,758 INFO L131 PetriNetUnfolder]: For 1043985/1046593 co-relation queries the response was YES. [2022-12-12 12:49:16,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149790 conditions, 12720 events. 3233/12720 cut-off events. For 1043985/1046593 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 140789 event pairs, 309 based on Foata normal form. 35/12651 useless extension candidates. Maximal degree in co-relation 131024. Up to 3934 conditions per place. [2022-12-12 12:49:16,845 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1050 selfloop transitions, 127 changer transitions 5649/6902 dead transitions. [2022-12-12 12:49:16,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3579 places, 6902 transitions, 232382 flow [2022-12-12 12:49:16,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-12 12:49:16,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-12 12:49:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3796 transitions. [2022-12-12 12:49:16,848 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5817624521072797 [2022-12-12 12:49:16,848 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3448 predicate places. [2022-12-12 12:49:16,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3579 places, 6902 transitions, 232382 flow [2022-12-12 12:49:19,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3571 places, 6902 transitions, 219264 flow, removed 6437 selfloop flow, removed 8 redundant places. [2022-12-12 12:49:19,125 INFO L495 AbstractCegarLoop]: Abstraction has has 3571 places, 6902 transitions, 219264 flow [2022-12-12 12:49:19,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:49:19,125 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:49:19,125 INFO L214 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] [2022-12-12 12:49:19,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-12-12 12:49:19,125 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:49:19,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:49:19,126 INFO L85 PathProgramCache]: Analyzing trace with hash -246046636, now seen corresponding path program 73 times [2022-12-12 12:49:19,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:49:19,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548602973] [2022-12-12 12:49:19,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:49:19,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:49:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:49:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:49:19,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:49:19,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548602973] [2022-12-12 12:49:19,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548602973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:49:19,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:49:19,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:49:19,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490474366] [2022-12-12 12:49:19,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:49:19,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:49:19,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:49:19,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:49:19,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:49:19,667 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:49:19,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3571 places, 6902 transitions, 219264 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:49:19,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:49:19,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:49:19,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:49:31,880 INFO L130 PetriNetUnfolder]: 3267/12813 cut-off events. [2022-12-12 12:49:31,880 INFO L131 PetriNetUnfolder]: For 1074663/1077263 co-relation queries the response was YES. [2022-12-12 12:49:31,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151885 conditions, 12813 events. 3267/12813 cut-off events. For 1074663/1077263 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 141818 event pairs, 306 based on Foata normal form. 34/12736 useless extension candidates. Maximal degree in co-relation 133081. Up to 3966 conditions per place. [2022-12-12 12:49:31,968 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1073 selfloop transitions, 140 changer transitions 5707/6996 dead transitions. [2022-12-12 12:49:31,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3619 places, 6996 transitions, 236111 flow [2022-12-12 12:49:31,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-12 12:49:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-12 12:49:31,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4108 transitions. [2022-12-12 12:49:31,971 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5781843771991555 [2022-12-12 12:49:31,971 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3488 predicate places. [2022-12-12 12:49:31,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3619 places, 6996 transitions, 236111 flow [2022-12-12 12:49:34,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3611 places, 6996 transitions, 222673 flow, removed 6597 selfloop flow, removed 8 redundant places. [2022-12-12 12:49:34,121 INFO L495 AbstractCegarLoop]: Abstraction has has 3611 places, 6996 transitions, 222673 flow [2022-12-12 12:49:34,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:49:34,121 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:49:34,121 INFO L214 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] [2022-12-12 12:49:34,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-12-12 12:49:34,122 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:49:34,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:49:34,122 INFO L85 PathProgramCache]: Analyzing trace with hash -52692332, now seen corresponding path program 74 times [2022-12-12 12:49:34,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:49:34,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939198966] [2022-12-12 12:49:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:49:34,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:49:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:49:34,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:49:34,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:49:34,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939198966] [2022-12-12 12:49:34,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939198966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:49:34,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:49:34,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:49:34,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654171722] [2022-12-12 12:49:34,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:49:34,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:49:34,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:49:34,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:49:34,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:49:34,738 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:49:34,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3611 places, 6996 transitions, 222673 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:49:34,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:49:34,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:49:34,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:49:46,563 INFO L130 PetriNetUnfolder]: 3286/12878 cut-off events. [2022-12-12 12:49:46,563 INFO L131 PetriNetUnfolder]: For 1109822/1112299 co-relation queries the response was YES. [2022-12-12 12:49:46,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153483 conditions, 12878 events. 3286/12878 cut-off events. For 1109822/1112299 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 142849 event pairs, 305 based on Foata normal form. 29/12801 useless extension candidates. Maximal degree in co-relation 134621. Up to 3992 conditions per place. [2022-12-12 12:49:46,654 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1077 selfloop transitions, 146 changer transitions 5758/7057 dead transitions. [2022-12-12 12:49:46,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3655 places, 7057 transitions, 238821 flow [2022-12-12 12:49:46,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-12 12:49:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-12 12:49:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3795 transitions. [2022-12-12 12:49:46,656 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5816091954022988 [2022-12-12 12:49:46,657 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3524 predicate places. [2022-12-12 12:49:46,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3655 places, 7057 transitions, 238821 flow [2022-12-12 12:49:48,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3647 places, 7057 transitions, 225639 flow, removed 6469 selfloop flow, removed 8 redundant places. [2022-12-12 12:49:48,929 INFO L495 AbstractCegarLoop]: Abstraction has has 3647 places, 7057 transitions, 225639 flow [2022-12-12 12:49:48,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:49:48,929 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:49:48,929 INFO L214 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] [2022-12-12 12:49:48,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-12-12 12:49:48,930 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:49:48,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:49:48,930 INFO L85 PathProgramCache]: Analyzing trace with hash -893272582, now seen corresponding path program 75 times [2022-12-12 12:49:48,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:49:48,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544212740] [2022-12-12 12:49:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:49:48,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:49:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:49:49,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:49:49,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:49:49,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544212740] [2022-12-12 12:49:49,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544212740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:49:49,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:49:49,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:49:49,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981832863] [2022-12-12 12:49:49,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:49:49,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:49:49,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:49:49,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:49:49,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:49:49,445 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:49:49,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3647 places, 7057 transitions, 225639 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:49:49,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:49:49,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:49:49,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:50:01,479 INFO L130 PetriNetUnfolder]: 3310/12993 cut-off events. [2022-12-12 12:50:01,479 INFO L131 PetriNetUnfolder]: For 1130731/1133233 co-relation queries the response was YES. [2022-12-12 12:50:01,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155335 conditions, 12993 events. 3310/12993 cut-off events. For 1130731/1133233 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 144484 event pairs, 305 based on Foata normal form. 29/12913 useless extension candidates. Maximal degree in co-relation 136425. Up to 4014 conditions per place. [2022-12-12 12:50:01,575 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1076 selfloop transitions, 135 changer transitions 5812/7099 dead transitions. [2022-12-12 12:50:01,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3690 places, 7099 transitions, 241733 flow [2022-12-12 12:50:01,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:50:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:50:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3719 transitions. [2022-12-12 12:50:01,577 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5829153605015674 [2022-12-12 12:50:01,577 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3559 predicate places. [2022-12-12 12:50:01,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3690 places, 7099 transitions, 241733 flow [2022-12-12 12:50:04,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3682 places, 7099 transitions, 228495 flow, removed 6497 selfloop flow, removed 8 redundant places. [2022-12-12 12:50:04,160 INFO L495 AbstractCegarLoop]: Abstraction has has 3682 places, 7099 transitions, 228495 flow [2022-12-12 12:50:04,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:50:04,160 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:50:04,160 INFO L214 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] [2022-12-12 12:50:04,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-12-12 12:50:04,161 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:50:04,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:50:04,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1553279422, now seen corresponding path program 76 times [2022-12-12 12:50:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:50:04,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932266400] [2022-12-12 12:50:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:50:04,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:50:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:50:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:50:04,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:50:04,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932266400] [2022-12-12 12:50:04,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932266400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:50:04,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:50:04,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:50:04,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604569249] [2022-12-12 12:50:04,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:50:04,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:50:04,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:50:04,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:50:04,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:50:04,641 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:50:04,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3682 places, 7099 transitions, 228495 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:50:04,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:50:04,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:50:04,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:50:17,436 INFO L130 PetriNetUnfolder]: 3336/13159 cut-off events. [2022-12-12 12:50:17,436 INFO L131 PetriNetUnfolder]: For 1165164/1167981 co-relation queries the response was YES. [2022-12-12 12:50:17,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158228 conditions, 13159 events. 3336/13159 cut-off events. For 1165164/1167981 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 146995 event pairs, 309 based on Foata normal form. 64/13108 useless extension candidates. Maximal degree in co-relation 139256. Up to 2674 conditions per place. [2022-12-12 12:50:17,531 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1055 selfloop transitions, 156 changer transitions 5884/7171 dead transitions. [2022-12-12 12:50:17,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3735 places, 7171 transitions, 246269 flow [2022-12-12 12:50:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-12 12:50:17,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-12 12:50:17,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 4499 transitions. [2022-12-12 12:50:17,534 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5745849297573435 [2022-12-12 12:50:17,534 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3604 predicate places. [2022-12-12 12:50:17,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3735 places, 7171 transitions, 246269 flow [2022-12-12 12:50:20,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 3727 places, 7171 transitions, 232721 flow, removed 6652 selfloop flow, removed 8 redundant places. [2022-12-12 12:50:20,344 INFO L495 AbstractCegarLoop]: Abstraction has has 3727 places, 7171 transitions, 232721 flow [2022-12-12 12:50:20,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:50:20,344 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:50:20,344 INFO L214 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] [2022-12-12 12:50:20,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-12-12 12:50:20,345 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:50:20,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:50:20,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1865666970, now seen corresponding path program 77 times [2022-12-12 12:50:20,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:50:20,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560405609] [2022-12-12 12:50:20,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:50:20,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:50:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:50:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:50:20,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:50:20,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560405609] [2022-12-12 12:50:20,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560405609] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:50:20,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:50:20,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-12-12 12:50:20,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550236253] [2022-12-12 12:50:20,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:50:20,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-12 12:50:20,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:50:20,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-12 12:50:20,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-12-12 12:50:20,857 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 145 [2022-12-12 12:50:20,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 3727 places, 7171 transitions, 232721 flow. Second operand has 26 states, 26 states have (on average 78.07692307692308) internal successors, (2030), 26 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:50:20,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:50:20,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 145 [2022-12-12 12:50:20,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:50:33,030 INFO L130 PetriNetUnfolder]: 3347/13206 cut-off events. [2022-12-12 12:50:33,030 INFO L131 PetriNetUnfolder]: For 1203103/1205686 co-relation queries the response was YES. [2022-12-12 12:50:33,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159782 conditions, 13206 events. 3347/13206 cut-off events. For 1203103/1205686 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 147600 event pairs, 311 based on Foata normal form. 30/13121 useless extension candidates. Maximal degree in co-relation 140766. Up to 4103 conditions per place. [2022-12-12 12:50:33,129 INFO L137 encePairwiseOnDemand]: 111/145 looper letters, 1066 selfloop transitions, 137 changer transitions 5935/7214 dead transitions. [2022-12-12 12:50:33,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 3770 places, 7214 transitions, 249157 flow [2022-12-12 12:50:33,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:50:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:50:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3719 transitions. [2022-12-12 12:50:33,131 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5829153605015674 [2022-12-12 12:50:33,132 INFO L295 CegarLoopForPetriNet]: 131 programPoint places, 3639 predicate places. [2022-12-12 12:50:33,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 3770 places, 7214 transitions, 249157 flow Received shutdown request... [2022-12-12 12:50:34,675 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 12:50:34,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-12-12 12:50:34,675 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2022-12-12 12:50:34,677 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 12:50:34,678 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 12:50:34,683 INFO L445 BasicCegarLoop]: Path program histogram: [77, 15, 15, 11] [2022-12-12 12:50:34,686 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 12:50:34,686 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 12:50:34,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 12:50:34 BasicIcfg [2022-12-12 12:50:34,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 12:50:34,689 INFO L158 Benchmark]: Toolchain (without parser) took 751615.93ms. Allocated memory was 179.3MB in the beginning and 4.6GB in the end (delta: 4.5GB). Free memory was 156.0MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2022-12-12 12:50:34,690 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 179.3MB. Free memory was 155.2MB in the beginning and 155.1MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 12:50:34,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.26ms. Allocated memory is still 179.3MB. Free memory was 155.6MB in the beginning and 145.0MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-12-12 12:50:34,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.77ms. Allocated memory is still 179.3MB. Free memory was 144.5MB in the beginning and 142.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 12:50:34,690 INFO L158 Benchmark]: Boogie Preprocessor took 35.80ms. Allocated memory is still 179.3MB. Free memory was 142.9MB in the beginning and 141.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 12:50:34,690 INFO L158 Benchmark]: RCFGBuilder took 442.94ms. Allocated memory is still 179.3MB. Free memory was 141.4MB in the beginning and 126.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 12:50:34,690 INFO L158 Benchmark]: TraceAbstraction took 750864.80ms. Allocated memory was 179.3MB in the beginning and 4.6GB in the end (delta: 4.5GB). Free memory was 125.2MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2022-12-12 12:50:34,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 179.3MB. Free memory was 155.2MB in the beginning and 155.1MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 211.26ms. Allocated memory is still 179.3MB. Free memory was 155.6MB in the beginning and 145.0MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 55.77ms. Allocated memory is still 179.3MB. Free memory was 144.5MB in the beginning and 142.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.80ms. Allocated memory is still 179.3MB. Free memory was 142.9MB in the beginning and 141.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 442.94ms. Allocated memory is still 179.3MB. Free memory was 141.4MB in the beginning and 126.2MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 750864.80ms. Allocated memory was 179.3MB in the beginning and 4.6GB in the end (delta: 4.5GB). Free memory was 125.2MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 199 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 73.3s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 750.7s, OverallIterations: 118, TraceHistogramMax: 1, PathProgramHistogramMax: 77, EmptinessCheckTime: 0.0s, AutomataDifference: 623.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51725 SdHoareTripleChecker+Valid, 63.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51725 mSDsluCounter, 238143 SdHoareTripleChecker+Invalid, 53.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 221240 mSDsCounter, 401 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 148847 IncrementalHoareTripleChecker+Invalid, 149248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 401 mSolverCounterUnsat, 16903 mSDtfsCounter, 148847 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6397 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 6065 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55191 ImplicationChecksByTransitivity, 212.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232721occurred in iteration=117, InterpolantAutomatonStates: 4393, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 71.8s AutomataMinimizationTime, 117 MinimizatonAttempts, 724785 StatesRemovedByMinimization, 117 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 51.2s InterpolantComputationTime, 11918 NumberOfCodeBlocks, 11918 NumberOfCodeBlocksAsserted, 118 NumberOfCheckSat, 11800 ConstructedInterpolants, 0 QuantifiedInterpolants, 88960 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 118 InterpolantComputations, 118 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown