/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:49:40,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:49:40,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:49:40,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:49:40,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:49:40,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:49:40,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:49:40,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:49:40,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:49:40,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:49:40,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:49:40,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:49:40,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:49:40,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:49:40,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:49:40,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:49:40,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:49:40,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:49:40,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:49:40,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:49:40,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:49:40,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:49:40,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:49:40,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:49:40,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 20:49:40,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:49:40,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:49:40,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:49:40,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:49:40,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:49:40,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:49:40,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:49:40,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:49:40,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:49:40,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:49:40,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:49:40,877 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-VariableLbe.epf [2023-01-27 20:49:40,902 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:49:40,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:49:40,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:49:40,903 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:49:40,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:49:40,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:49:40,904 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:49:40,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:49:40,905 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:49:40,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:49:40,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:49:40,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:49:40,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:49:40,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:49:40,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:49:40,906 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:49:40,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:49:40,906 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:49:40,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:49:40,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:49:40,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:49:40,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:49:40,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:49:40,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:49:40,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:49:40,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:49:40,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:49:40,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:49:40,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:49:40,908 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:49:40,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:49:40,909 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:49:41,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:49:41,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:49:41,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:49:41,154 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:49:41,155 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:49:41,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-01-27 20:49:42,340 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:49:42,512 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:49:42,513 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-01-27 20:49:42,517 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a6575f07/f8464459f87a4e81bca854f6683faa05/FLAGd38a6e70d [2023-01-27 20:49:42,528 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a6575f07/f8464459f87a4e81bca854f6683faa05 [2023-01-27 20:49:42,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:49:42,531 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:49:42,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:49:42,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:49:42,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:49:42,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f19d6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42, skipping insertion in model container [2023-01-27 20:49:42,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:49:42,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:49:42,701 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c[5426,5439] [2023-01-27 20:49:42,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:49:42,711 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:49:42,734 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c[5426,5439] [2023-01-27 20:49:42,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:49:42,742 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:49:42,742 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 20:49:42,747 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:49:42,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42 WrapperNode [2023-01-27 20:49:42,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:49:42,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:49:42,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:49:42,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:49:42,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,793 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 265 [2023-01-27 20:49:42,794 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:49:42,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:49:42,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:49:42,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:49:42,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,814 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:49:42,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:49:42,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:49:42,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:49:42,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42" (1/1) ... [2023-01-27 20:49:42,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:49:42,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:49:42,846 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 20:49:42,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 20:49:42,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:49:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:49:42,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:49:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:49:42,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:49:42,899 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 20:49:42,899 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 20:49:42,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:49:42,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:49:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:49:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 20:49:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 20:49:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:49:42,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:49:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:49:42,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:49:42,903 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:49:43,008 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:49:43,010 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:49:43,293 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:49:43,384 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:49:43,384 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 20:49:43,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:49:43 BoogieIcfgContainer [2023-01-27 20:49:43,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:49:43,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:49:43,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:49:43,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:49:43,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:49:42" (1/3) ... [2023-01-27 20:49:43,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510c58b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:49:43, skipping insertion in model container [2023-01-27 20:49:43,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:49:42" (2/3) ... [2023-01-27 20:49:43,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510c58b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:49:43, skipping insertion in model container [2023-01-27 20:49:43,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:49:43" (3/3) ... [2023-01-27 20:49:43,393 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-01-27 20:49:43,405 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:49:43,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:49:43,406 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:49:43,488 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 20:49:43,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 155 transitions, 334 flow [2023-01-27 20:49:43,596 INFO L130 PetriNetUnfolder]: 2/152 cut-off events. [2023-01-27 20:49:43,596 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:49:43,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 152 events. 2/152 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-01-27 20:49:43,599 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 155 transitions, 334 flow [2023-01-27 20:49:43,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 142 transitions, 302 flow [2023-01-27 20:49:43,612 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:49:43,619 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 142 transitions, 302 flow [2023-01-27 20:49:43,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 142 transitions, 302 flow [2023-01-27 20:49:43,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 142 transitions, 302 flow [2023-01-27 20:49:43,650 INFO L130 PetriNetUnfolder]: 2/142 cut-off events. [2023-01-27 20:49:43,651 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:49:43,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 2/142 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-01-27 20:49:43,653 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-01-27 20:49:47,210 INFO L134 LiptonReduction]: Checked pairs total: 20861 [2023-01-27 20:49:47,210 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-01-27 20:49:47,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:49:47,227 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;@9179c26, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:49:47,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 20:49:47,237 INFO L130 PetriNetUnfolder]: 0/48 cut-off events. [2023-01-27 20:49:47,237 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:49:47,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:49:47,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:49:47,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:49:47,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:49:47,243 INFO L85 PathProgramCache]: Analyzing trace with hash -685701629, now seen corresponding path program 1 times [2023-01-27 20:49:47,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:49:47,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493077534] [2023-01-27 20:49:47,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:49:47,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:49:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:49:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:49:48,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:49:48,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493077534] [2023-01-27 20:49:48,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493077534] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:49:48,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:49:48,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:49:48,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330803543] [2023-01-27 20:49:48,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:49:48,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:49:48,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:49:48,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:49:48,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:49:48,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:49:48,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 116 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:48,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:49:48,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:49:48,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:49:49,079 INFO L130 PetriNetUnfolder]: 4666/7168 cut-off events. [2023-01-27 20:49:49,080 INFO L131 PetriNetUnfolder]: For 394/394 co-relation queries the response was YES. [2023-01-27 20:49:49,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 7168 events. 4666/7168 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 41262 event pairs, 1653 based on Foata normal form. 1/7108 useless extension candidates. Maximal degree in co-relation 12818. Up to 2475 conditions per place. [2023-01-27 20:49:49,125 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 147 selfloop transitions, 15 changer transitions 19/193 dead transitions. [2023-01-27 20:49:49,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 193 transitions, 820 flow [2023-01-27 20:49:49,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:49:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:49:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1447 transitions. [2023-01-27 20:49:49,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158645276292335 [2023-01-27 20:49:49,153 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1447 transitions. [2023-01-27 20:49:49,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1447 transitions. [2023-01-27 20:49:49,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:49:49,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1447 transitions. [2023-01-27 20:49:49,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.54545454545453) internal successors, (1447), 11 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:49,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:49,175 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:49,177 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 116 flow. Second operand 11 states and 1447 transitions. [2023-01-27 20:49:49,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 193 transitions, 820 flow [2023-01-27 20:49:49,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 193 transitions, 772 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:49:49,192 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 196 flow [2023-01-27 20:49:49,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=196, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-01-27 20:49:49,196 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2023-01-27 20:49:49,196 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 196 flow [2023-01-27 20:49:49,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:49,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:49:49,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:49:49,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:49:49,198 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:49:49,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:49:49,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1882952335, now seen corresponding path program 2 times [2023-01-27 20:49:49,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:49:49,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846869158] [2023-01-27 20:49:49,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:49:49,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:49:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:49:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:49:49,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:49:49,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846869158] [2023-01-27 20:49:49,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846869158] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:49:49,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:49:49,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:49:49,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547227854] [2023-01-27 20:49:49,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:49:49,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:49:49,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:49:49,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:49:49,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:49:49,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:49:49,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:49,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:49:49,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:49:49,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:49:51,502 INFO L130 PetriNetUnfolder]: 11054/18913 cut-off events. [2023-01-27 20:49:51,503 INFO L131 PetriNetUnfolder]: For 301/309 co-relation queries the response was YES. [2023-01-27 20:49:51,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38130 conditions, 18913 events. 11054/18913 cut-off events. For 301/309 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 146935 event pairs, 2687 based on Foata normal form. 190/18773 useless extension candidates. Maximal degree in co-relation 38108. Up to 6944 conditions per place. [2023-01-27 20:49:51,746 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 138 selfloop transitions, 37 changer transitions 0/203 dead transitions. [2023-01-27 20:49:51,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 203 transitions, 830 flow [2023-01-27 20:49:51,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:49:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:49:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1213 transitions. [2023-01-27 20:49:51,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5285403050108932 [2023-01-27 20:49:51,750 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1213 transitions. [2023-01-27 20:49:51,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1213 transitions. [2023-01-27 20:49:51,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:49:51,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1213 transitions. [2023-01-27 20:49:51,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.77777777777777) internal successors, (1213), 9 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:51,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:51,758 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:51,758 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 196 flow. Second operand 9 states and 1213 transitions. [2023-01-27 20:49:51,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 203 transitions, 830 flow [2023-01-27 20:49:51,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 203 transitions, 828 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 20:49:51,769 INFO L231 Difference]: Finished difference. Result has 80 places, 104 transitions, 460 flow [2023-01-27 20:49:51,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=460, PETRI_PLACES=80, PETRI_TRANSITIONS=104} [2023-01-27 20:49:51,769 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2023-01-27 20:49:51,770 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 104 transitions, 460 flow [2023-01-27 20:49:51,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:51,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:49:51,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:49:51,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 20:49:51,771 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:49:51,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:49:51,771 INFO L85 PathProgramCache]: Analyzing trace with hash -396490139, now seen corresponding path program 3 times [2023-01-27 20:49:51,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:49:51,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223823695] [2023-01-27 20:49:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:49:51,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:49:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:49:51,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:49:51,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:49:51,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223823695] [2023-01-27 20:49:51,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223823695] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:49:51,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:49:51,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:49:51,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871062320] [2023-01-27 20:49:51,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:49:51,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:49:51,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:49:51,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:49:51,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:49:51,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-01-27 20:49:51,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 104 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:51,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:49:51,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-01-27 20:49:51,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:49:53,188 INFO L130 PetriNetUnfolder]: 7985/14097 cut-off events. [2023-01-27 20:49:53,188 INFO L131 PetriNetUnfolder]: For 9371/9798 co-relation queries the response was YES. [2023-01-27 20:49:53,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36629 conditions, 14097 events. 7985/14097 cut-off events. For 9371/9798 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 109271 event pairs, 5244 based on Foata normal form. 450/13895 useless extension candidates. Maximal degree in co-relation 26097. Up to 10070 conditions per place. [2023-01-27 20:49:53,413 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 84 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-01-27 20:49:53,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 756 flow [2023-01-27 20:49:53,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:49:53,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:49:53,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-01-27 20:49:53,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594771241830065 [2023-01-27 20:49:53,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-01-27 20:49:53,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-01-27 20:49:53,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:49:53,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-01-27 20:49:53,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:53,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:53,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:53,422 INFO L175 Difference]: Start difference. First operand has 80 places, 104 transitions, 460 flow. Second operand 3 states and 428 transitions. [2023-01-27 20:49:53,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 756 flow [2023-01-27 20:49:53,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 131 transitions, 756 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 20:49:53,470 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 464 flow [2023-01-27 20:49:53,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2023-01-27 20:49:53,472 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 24 predicate places. [2023-01-27 20:49:53,474 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 464 flow [2023-01-27 20:49:53,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:53,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:49:53,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:49:53,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 20:49:53,476 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:49:53,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:49:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1911915813, now seen corresponding path program 4 times [2023-01-27 20:49:53,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:49:53,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719932373] [2023-01-27 20:49:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:49:53,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:49:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:49:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:49:53,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:49:53,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719932373] [2023-01-27 20:49:53,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719932373] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:49:53,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:49:53,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:49:53,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94615200] [2023-01-27 20:49:53,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:49:53,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:49:53,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:49:53,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:49:53,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:49:53,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-01-27 20:49:53,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:53,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:49:53,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-01-27 20:49:53,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:49:55,064 INFO L130 PetriNetUnfolder]: 8352/15087 cut-off events. [2023-01-27 20:49:55,064 INFO L131 PetriNetUnfolder]: For 10572/10975 co-relation queries the response was YES. [2023-01-27 20:49:55,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39577 conditions, 15087 events. 8352/15087 cut-off events. For 10572/10975 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 121387 event pairs, 5810 based on Foata normal form. 451/14808 useless extension candidates. Maximal degree in co-relation 27830. Up to 10310 conditions per place. [2023-01-27 20:49:55,181 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 85 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-01-27 20:49:55,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 766 flow [2023-01-27 20:49:55,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:49:55,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:49:55,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-01-27 20:49:55,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594771241830065 [2023-01-27 20:49:55,184 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-01-27 20:49:55,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-01-27 20:49:55,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:49:55,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-01-27 20:49:55,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:55,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:55,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:55,195 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 464 flow. Second operand 3 states and 428 transitions. [2023-01-27 20:49:55,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 766 flow [2023-01-27 20:49:55,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 132 transitions, 762 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 20:49:55,253 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 470 flow [2023-01-27 20:49:55,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=84, PETRI_TRANSITIONS=103} [2023-01-27 20:49:55,255 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 25 predicate places. [2023-01-27 20:49:55,255 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 470 flow [2023-01-27 20:49:55,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:55,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:49:55,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:49:55,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 20:49:55,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:49:55,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:49:55,258 INFO L85 PathProgramCache]: Analyzing trace with hash -909351973, now seen corresponding path program 5 times [2023-01-27 20:49:55,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:49:55,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950629080] [2023-01-27 20:49:55,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:49:55,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:49:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:49:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:49:55,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:49:55,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950629080] [2023-01-27 20:49:55,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950629080] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:49:55,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:49:55,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:49:55,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9276456] [2023-01-27 20:49:55,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:49:55,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:49:55,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:49:55,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:49:55,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:49:55,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 255 [2023-01-27 20:49:55,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 103 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:55,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:49:55,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 255 [2023-01-27 20:49:55,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:49:56,731 INFO L130 PetriNetUnfolder]: 8350/15312 cut-off events. [2023-01-27 20:49:56,731 INFO L131 PetriNetUnfolder]: For 11435/11808 co-relation queries the response was YES. [2023-01-27 20:49:56,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41560 conditions, 15312 events. 8350/15312 cut-off events. For 11435/11808 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 123633 event pairs, 5801 based on Foata normal form. 366/14902 useless extension candidates. Maximal degree in co-relation 28969. Up to 10791 conditions per place. [2023-01-27 20:49:56,876 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 82 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2023-01-27 20:49:56,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 129 transitions, 754 flow [2023-01-27 20:49:56,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:49:56,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:49:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-01-27 20:49:56,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5594771241830065 [2023-01-27 20:49:56,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-01-27 20:49:56,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-01-27 20:49:56,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:49:56,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-01-27 20:49:56,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:56,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:56,881 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:56,881 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 470 flow. Second operand 3 states and 428 transitions. [2023-01-27 20:49:56,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 129 transitions, 754 flow [2023-01-27 20:49:56,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 20:49:56,920 INFO L231 Difference]: Finished difference. Result has 85 places, 103 transitions, 476 flow [2023-01-27 20:49:56,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=85, PETRI_TRANSITIONS=103} [2023-01-27 20:49:56,922 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 26 predicate places. [2023-01-27 20:49:56,922 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 476 flow [2023-01-27 20:49:56,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:56,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:49:56,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:49:56,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 20:49:56,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:49:56,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:49:56,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1824534595, now seen corresponding path program 6 times [2023-01-27 20:49:56,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:49:56,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177384277] [2023-01-27 20:49:56,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:49:56,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:49:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:49:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:49:57,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:49:57,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177384277] [2023-01-27 20:49:57,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177384277] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:49:57,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:49:57,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:49:57,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735415469] [2023-01-27 20:49:57,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:49:57,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:49:57,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:49:57,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:49:57,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:49:57,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:49:57,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 476 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:57,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:49:57,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:49:57,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:49:59,685 INFO L130 PetriNetUnfolder]: 18082/28043 cut-off events. [2023-01-27 20:49:59,685 INFO L131 PetriNetUnfolder]: For 22570/23192 co-relation queries the response was YES. [2023-01-27 20:49:59,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82612 conditions, 28043 events. 18082/28043 cut-off events. For 22570/23192 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 193012 event pairs, 6131 based on Foata normal form. 506/28130 useless extension candidates. Maximal degree in co-relation 48840. Up to 7851 conditions per place. [2023-01-27 20:49:59,850 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 262 selfloop transitions, 29 changer transitions 41/357 dead transitions. [2023-01-27 20:49:59,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 357 transitions, 2256 flow [2023-01-27 20:49:59,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:49:59,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:49:59,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1463 transitions. [2023-01-27 20:49:59,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215686274509804 [2023-01-27 20:49:59,854 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1463 transitions. [2023-01-27 20:49:59,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1463 transitions. [2023-01-27 20:49:59,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:49:59,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1463 transitions. [2023-01-27 20:49:59,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.0) internal successors, (1463), 11 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:59,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:59,862 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:59,862 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 476 flow. Second operand 11 states and 1463 transitions. [2023-01-27 20:49:59,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 357 transitions, 2256 flow [2023-01-27 20:49:59,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 357 transitions, 2252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 20:49:59,927 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 717 flow [2023-01-27 20:49:59,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=717, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2023-01-27 20:49:59,929 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 40 predicate places. [2023-01-27 20:49:59,929 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 717 flow [2023-01-27 20:49:59,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:49:59,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:49:59,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:49:59,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 20:49:59,930 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:49:59,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:49:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1285316251, now seen corresponding path program 7 times [2023-01-27 20:49:59,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:49:59,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50766001] [2023-01-27 20:49:59,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:49:59,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:49:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:50:00,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:50:00,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:50:00,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50766001] [2023-01-27 20:50:00,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50766001] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:50:00,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:50:00,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 20:50:00,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42951054] [2023-01-27 20:50:00,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:50:00,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:50:00,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:50:00,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:50:00,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:50:00,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:50:00,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 717 flow. Second operand has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:00,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:50:00,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:50:00,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:50:02,716 INFO L130 PetriNetUnfolder]: 13978/25086 cut-off events. [2023-01-27 20:50:02,716 INFO L131 PetriNetUnfolder]: For 23764/24118 co-relation queries the response was YES. [2023-01-27 20:50:02,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74557 conditions, 25086 events. 13978/25086 cut-off events. For 23764/24118 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 207913 event pairs, 7108 based on Foata normal form. 218/24379 useless extension candidates. Maximal degree in co-relation 74485. Up to 17134 conditions per place. [2023-01-27 20:50:02,847 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 133 selfloop transitions, 28 changer transitions 0/214 dead transitions. [2023-01-27 20:50:02,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 214 transitions, 1417 flow [2023-01-27 20:50:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:50:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:50:02,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 910 transitions. [2023-01-27 20:50:02,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-01-27 20:50:02,850 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 910 transitions. [2023-01-27 20:50:02,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 910 transitions. [2023-01-27 20:50:02,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:50:02,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 910 transitions. [2023-01-27 20:50:02,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:02,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:02,855 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:02,855 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 717 flow. Second operand 7 states and 910 transitions. [2023-01-27 20:50:02,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 214 transitions, 1417 flow [2023-01-27 20:50:03,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 214 transitions, 1411 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 20:50:03,022 INFO L231 Difference]: Finished difference. Result has 107 places, 155 transitions, 970 flow [2023-01-27 20:50:03,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=970, PETRI_PLACES=107, PETRI_TRANSITIONS=155} [2023-01-27 20:50:03,022 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 48 predicate places. [2023-01-27 20:50:03,022 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 155 transitions, 970 flow [2023-01-27 20:50:03,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:03,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:50:03,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:50:03,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 20:50:03,023 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:50:03,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:50:03,024 INFO L85 PathProgramCache]: Analyzing trace with hash 148963389, now seen corresponding path program 8 times [2023-01-27 20:50:03,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:50:03,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434468304] [2023-01-27 20:50:03,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:50:03,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:50:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:50:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:50:03,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:50:03,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434468304] [2023-01-27 20:50:03,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434468304] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:50:03,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:50:03,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:50:03,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775490476] [2023-01-27 20:50:03,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:50:03,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:50:03,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:50:03,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:50:03,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:50:03,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:50:03,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 155 transitions, 970 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:03,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:50:03,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:50:03,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:50:06,613 INFO L130 PetriNetUnfolder]: 22105/34134 cut-off events. [2023-01-27 20:50:06,613 INFO L131 PetriNetUnfolder]: For 48159/49735 co-relation queries the response was YES. [2023-01-27 20:50:06,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114966 conditions, 34134 events. 22105/34134 cut-off events. For 48159/49735 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 238816 event pairs, 8350 based on Foata normal form. 916/34559 useless extension candidates. Maximal degree in co-relation 109903. Up to 11640 conditions per place. [2023-01-27 20:50:06,858 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 256 selfloop transitions, 30 changer transitions 29/347 dead transitions. [2023-01-27 20:50:06,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 347 transitions, 2556 flow [2023-01-27 20:50:06,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:50:06,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:50:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1447 transitions. [2023-01-27 20:50:06,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5158645276292335 [2023-01-27 20:50:06,863 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1447 transitions. [2023-01-27 20:50:06,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1447 transitions. [2023-01-27 20:50:06,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:50:06,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1447 transitions. [2023-01-27 20:50:06,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.54545454545453) internal successors, (1447), 11 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:06,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:06,871 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:06,871 INFO L175 Difference]: Start difference. First operand has 107 places, 155 transitions, 970 flow. Second operand 11 states and 1447 transitions. [2023-01-27 20:50:06,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 347 transitions, 2556 flow [2023-01-27 20:50:07,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 347 transitions, 2554 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-27 20:50:07,369 INFO L231 Difference]: Finished difference. Result has 121 places, 160 transitions, 1093 flow [2023-01-27 20:50:07,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1093, PETRI_PLACES=121, PETRI_TRANSITIONS=160} [2023-01-27 20:50:07,370 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 62 predicate places. [2023-01-27 20:50:07,370 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 160 transitions, 1093 flow [2023-01-27 20:50:07,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:07,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:50:07,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:50:07,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 20:50:07,371 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:50:07,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:50:07,371 INFO L85 PathProgramCache]: Analyzing trace with hash -436772047, now seen corresponding path program 9 times [2023-01-27 20:50:07,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:50:07,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327868920] [2023-01-27 20:50:07,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:50:07,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:50:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:50:08,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:50:08,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:50:08,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327868920] [2023-01-27 20:50:08,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327868920] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:50:08,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:50:08,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:50:08,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335484596] [2023-01-27 20:50:08,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:50:08,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:50:08,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:50:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:50:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:50:08,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:50:08,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 160 transitions, 1093 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:08,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:50:08,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:50:08,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:50:11,360 INFO L130 PetriNetUnfolder]: 16971/30843 cut-off events. [2023-01-27 20:50:11,360 INFO L131 PetriNetUnfolder]: For 46509/47101 co-relation queries the response was YES. [2023-01-27 20:50:11,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103352 conditions, 30843 events. 16971/30843 cut-off events. For 46509/47101 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 267662 event pairs, 6779 based on Foata normal form. 206/30019 useless extension candidates. Maximal degree in co-relation 103264. Up to 21490 conditions per place. [2023-01-27 20:50:11,538 INFO L137 encePairwiseOnDemand]: 240/255 looper letters, 197 selfloop transitions, 72 changer transitions 0/327 dead transitions. [2023-01-27 20:50:11,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 327 transitions, 2486 flow [2023-01-27 20:50:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:50:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:50:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1441 transitions. [2023-01-27 20:50:11,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5137254901960784 [2023-01-27 20:50:11,544 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1441 transitions. [2023-01-27 20:50:11,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1441 transitions. [2023-01-27 20:50:11,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:50:11,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1441 transitions. [2023-01-27 20:50:11,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.0) internal successors, (1441), 11 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:11,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:11,553 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:11,553 INFO L175 Difference]: Start difference. First operand has 121 places, 160 transitions, 1093 flow. Second operand 11 states and 1441 transitions. [2023-01-27 20:50:11,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 327 transitions, 2486 flow [2023-01-27 20:50:12,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 327 transitions, 2451 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-01-27 20:50:12,016 INFO L231 Difference]: Finished difference. Result has 134 places, 231 transitions, 1851 flow [2023-01-27 20:50:12,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1851, PETRI_PLACES=134, PETRI_TRANSITIONS=231} [2023-01-27 20:50:12,017 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 75 predicate places. [2023-01-27 20:50:12,017 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 231 transitions, 1851 flow [2023-01-27 20:50:12,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:12,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:50:12,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:50:12,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 20:50:12,018 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:50:12,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:50:12,018 INFO L85 PathProgramCache]: Analyzing trace with hash -857038051, now seen corresponding path program 10 times [2023-01-27 20:50:12,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:50:12,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045459719] [2023-01-27 20:50:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:50:12,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:50:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:50:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:50:12,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:50:12,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045459719] [2023-01-27 20:50:12,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045459719] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:50:12,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:50:12,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 20:50:12,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083806309] [2023-01-27 20:50:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:50:12,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:50:12,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:50:12,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:50:12,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:50:12,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:50:12,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 231 transitions, 1851 flow. Second operand has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:12,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:50:12,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:50:12,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:50:16,254 INFO L130 PetriNetUnfolder]: 19229/35474 cut-off events. [2023-01-27 20:50:16,254 INFO L131 PetriNetUnfolder]: For 83077/84707 co-relation queries the response was YES. [2023-01-27 20:50:16,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129691 conditions, 35474 events. 19229/35474 cut-off events. For 83077/84707 co-relation queries the response was YES. Maximal size of possible extension queue 1079. Compared 315917 event pairs, 6318 based on Foata normal form. 628/35197 useless extension candidates. Maximal degree in co-relation 127131. Up to 13300 conditions per place. [2023-01-27 20:50:16,496 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 241 selfloop transitions, 72 changer transitions 3/374 dead transitions. [2023-01-27 20:50:16,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 374 transitions, 3347 flow [2023-01-27 20:50:16,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:50:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:50:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 954 transitions. [2023-01-27 20:50:16,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534453781512605 [2023-01-27 20:50:16,500 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 954 transitions. [2023-01-27 20:50:16,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 954 transitions. [2023-01-27 20:50:16,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:50:16,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 954 transitions. [2023-01-27 20:50:16,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 136.28571428571428) internal successors, (954), 7 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:16,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:16,506 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:16,506 INFO L175 Difference]: Start difference. First operand has 134 places, 231 transitions, 1851 flow. Second operand 7 states and 954 transitions. [2023-01-27 20:50:16,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 374 transitions, 3347 flow [2023-01-27 20:50:17,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 374 transitions, 3291 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-01-27 20:50:17,062 INFO L231 Difference]: Finished difference. Result has 144 places, 252 transitions, 2266 flow [2023-01-27 20:50:17,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2266, PETRI_PLACES=144, PETRI_TRANSITIONS=252} [2023-01-27 20:50:17,063 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 85 predicate places. [2023-01-27 20:50:17,063 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 252 transitions, 2266 flow [2023-01-27 20:50:17,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:17,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:50:17,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:50:17,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 20:50:17,064 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:50:17,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:50:17,064 INFO L85 PathProgramCache]: Analyzing trace with hash 584626605, now seen corresponding path program 11 times [2023-01-27 20:50:17,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:50:17,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92864613] [2023-01-27 20:50:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:50:17,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:50:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:50:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:50:17,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:50:17,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92864613] [2023-01-27 20:50:17,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92864613] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:50:17,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:50:17,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:50:17,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198674366] [2023-01-27 20:50:17,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:50:17,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:50:17,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:50:17,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:50:17,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:50:17,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:50:17,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 252 transitions, 2266 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:17,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:50:17,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:50:17,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:50:23,168 INFO L130 PetriNetUnfolder]: 30033/48681 cut-off events. [2023-01-27 20:50:23,168 INFO L131 PetriNetUnfolder]: For 150267/152327 co-relation queries the response was YES. [2023-01-27 20:50:23,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196148 conditions, 48681 events. 30033/48681 cut-off events. For 150267/152327 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 376948 event pairs, 10902 based on Foata normal form. 694/48786 useless extension candidates. Maximal degree in co-relation 191277. Up to 13549 conditions per place. [2023-01-27 20:50:23,620 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 377 selfloop transitions, 32 changer transitions 61/533 dead transitions. [2023-01-27 20:50:23,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 533 transitions, 5194 flow [2023-01-27 20:50:23,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 20:50:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 20:50:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1459 transitions. [2023-01-27 20:50:23,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5201426024955437 [2023-01-27 20:50:23,624 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1459 transitions. [2023-01-27 20:50:23,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1459 transitions. [2023-01-27 20:50:23,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:50:23,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1459 transitions. [2023-01-27 20:50:23,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.63636363636363) internal successors, (1459), 11 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:23,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:23,631 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:23,631 INFO L175 Difference]: Start difference. First operand has 144 places, 252 transitions, 2266 flow. Second operand 11 states and 1459 transitions. [2023-01-27 20:50:23,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 533 transitions, 5194 flow [2023-01-27 20:50:24,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 533 transitions, 5170 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-01-27 20:50:24,912 INFO L231 Difference]: Finished difference. Result has 158 places, 257 transitions, 2395 flow [2023-01-27 20:50:24,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2395, PETRI_PLACES=158, PETRI_TRANSITIONS=257} [2023-01-27 20:50:24,912 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 99 predicate places. [2023-01-27 20:50:24,913 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 257 transitions, 2395 flow [2023-01-27 20:50:24,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:24,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:50:24,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:50:24,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 20:50:24,913 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:50:24,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:50:24,914 INFO L85 PathProgramCache]: Analyzing trace with hash 287506541, now seen corresponding path program 12 times [2023-01-27 20:50:24,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:50:24,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936028241] [2023-01-27 20:50:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:50:24,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:50:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:50:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:50:25,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:50:25,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936028241] [2023-01-27 20:50:25,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936028241] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:50:25,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:50:25,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:50:25,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309469771] [2023-01-27 20:50:25,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:50:25,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:50:25,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:50:25,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:50:25,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:50:25,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:50:25,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 257 transitions, 2395 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:25,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:50:25,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:50:25,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:50:29,632 INFO L130 PetriNetUnfolder]: 20882/39316 cut-off events. [2023-01-27 20:50:29,632 INFO L131 PetriNetUnfolder]: For 134764/136909 co-relation queries the response was YES. [2023-01-27 20:50:30,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159052 conditions, 39316 events. 20882/39316 cut-off events. For 134764/136909 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 363365 event pairs, 6541 based on Foata normal form. 524/39208 useless extension candidates. Maximal degree in co-relation 158754. Up to 19860 conditions per place. [2023-01-27 20:50:30,224 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 277 selfloop transitions, 75 changer transitions 1/416 dead transitions. [2023-01-27 20:50:30,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 416 transitions, 4380 flow [2023-01-27 20:50:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:50:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:50:30,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 930 transitions. [2023-01-27 20:50:30,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2023-01-27 20:50:30,228 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 930 transitions. [2023-01-27 20:50:30,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 930 transitions. [2023-01-27 20:50:30,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:50:30,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 930 transitions. [2023-01-27 20:50:30,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.85714285714286) internal successors, (930), 7 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:30,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:30,233 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:30,233 INFO L175 Difference]: Start difference. First operand has 158 places, 257 transitions, 2395 flow. Second operand 7 states and 930 transitions. [2023-01-27 20:50:30,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 416 transitions, 4380 flow [2023-01-27 20:50:31,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 416 transitions, 4341 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-01-27 20:50:31,663 INFO L231 Difference]: Finished difference. Result has 162 places, 298 transitions, 3043 flow [2023-01-27 20:50:31,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3043, PETRI_PLACES=162, PETRI_TRANSITIONS=298} [2023-01-27 20:50:31,664 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 103 predicate places. [2023-01-27 20:50:31,664 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 298 transitions, 3043 flow [2023-01-27 20:50:31,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:31,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:50:31,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:50:31,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 20:50:31,665 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:50:31,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:50:31,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1525849507, now seen corresponding path program 13 times [2023-01-27 20:50:31,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:50:31,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588789802] [2023-01-27 20:50:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:50:31,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:50:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:50:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:50:32,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:50:32,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588789802] [2023-01-27 20:50:32,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588789802] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:50:32,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:50:32,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:50:32,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697753769] [2023-01-27 20:50:32,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:50:32,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:50:32,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:50:32,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:50:32,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:50:32,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:50:32,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 298 transitions, 3043 flow. Second operand has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:32,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:50:32,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:50:32,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:50:37,651 INFO L130 PetriNetUnfolder]: 25276/47397 cut-off events. [2023-01-27 20:50:37,652 INFO L131 PetriNetUnfolder]: For 205259/208158 co-relation queries the response was YES. [2023-01-27 20:50:38,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197136 conditions, 47397 events. 25276/47397 cut-off events. For 205259/208158 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 449293 event pairs, 9715 based on Foata normal form. 686/47189 useless extension candidates. Maximal degree in co-relation 193261. Up to 26189 conditions per place. [2023-01-27 20:50:38,445 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 335 selfloop transitions, 51 changer transitions 36/485 dead transitions. [2023-01-27 20:50:38,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 485 transitions, 5307 flow [2023-01-27 20:50:38,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:50:38,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:50:38,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1200 transitions. [2023-01-27 20:50:38,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228758169934641 [2023-01-27 20:50:38,448 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1200 transitions. [2023-01-27 20:50:38,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1200 transitions. [2023-01-27 20:50:38,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:50:38,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1200 transitions. [2023-01-27 20:50:38,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.33333333333334) internal successors, (1200), 9 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:38,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:38,455 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:38,455 INFO L175 Difference]: Start difference. First operand has 162 places, 298 transitions, 3043 flow. Second operand 9 states and 1200 transitions. [2023-01-27 20:50:38,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 485 transitions, 5307 flow [2023-01-27 20:50:41,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 485 transitions, 5299 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-27 20:50:41,078 INFO L231 Difference]: Finished difference. Result has 174 places, 331 transitions, 3515 flow [2023-01-27 20:50:41,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3515, PETRI_PLACES=174, PETRI_TRANSITIONS=331} [2023-01-27 20:50:41,079 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 115 predicate places. [2023-01-27 20:50:41,079 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 331 transitions, 3515 flow [2023-01-27 20:50:41,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:41,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:50:41,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:50:41,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 20:50:41,080 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:50:41,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:50:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash 403579719, now seen corresponding path program 14 times [2023-01-27 20:50:41,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:50:41,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037067103] [2023-01-27 20:50:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:50:41,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:50:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:50:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:50:41,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:50:41,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037067103] [2023-01-27 20:50:41,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037067103] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:50:41,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:50:41,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:50:41,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847908047] [2023-01-27 20:50:41,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:50:41,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:50:41,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:50:41,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:50:41,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:50:41,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:50:41,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 331 transitions, 3515 flow. Second operand has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:41,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:50:41,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:50:41,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:50:50,621 INFO L130 PetriNetUnfolder]: 31515/59522 cut-off events. [2023-01-27 20:50:50,621 INFO L131 PetriNetUnfolder]: For 307688/310757 co-relation queries the response was YES. [2023-01-27 20:50:51,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259390 conditions, 59522 events. 31515/59522 cut-off events. For 307688/310757 co-relation queries the response was YES. Maximal size of possible extension queue 1784. Compared 586012 event pairs, 9979 based on Foata normal form. 1325/59881 useless extension candidates. Maximal degree in co-relation 254710. Up to 21355 conditions per place. [2023-01-27 20:50:51,378 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 367 selfloop transitions, 122 changer transitions 13/565 dead transitions. [2023-01-27 20:50:51,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 565 transitions, 6706 flow [2023-01-27 20:50:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:50:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:50:51,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1194 transitions. [2023-01-27 20:50:51,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202614379084968 [2023-01-27 20:50:51,573 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1194 transitions. [2023-01-27 20:50:51,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1194 transitions. [2023-01-27 20:50:51,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:50:51,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1194 transitions. [2023-01-27 20:50:51,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.66666666666666) internal successors, (1194), 9 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:51,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:51,577 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:51,578 INFO L175 Difference]: Start difference. First operand has 174 places, 331 transitions, 3515 flow. Second operand 9 states and 1194 transitions. [2023-01-27 20:50:51,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 565 transitions, 6706 flow [2023-01-27 20:50:55,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 565 transitions, 6626 flow, removed 32 selfloop flow, removed 1 redundant places. [2023-01-27 20:50:55,166 INFO L231 Difference]: Finished difference. Result has 187 places, 395 transitions, 4738 flow [2023-01-27 20:50:55,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3455, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4738, PETRI_PLACES=187, PETRI_TRANSITIONS=395} [2023-01-27 20:50:55,167 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 128 predicate places. [2023-01-27 20:50:55,167 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 395 transitions, 4738 flow [2023-01-27 20:50:55,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.11111111111111) internal successors, (1072), 9 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:55,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:50:55,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:50:55,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 20:50:55,167 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:50:55,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:50:55,168 INFO L85 PathProgramCache]: Analyzing trace with hash 830023509, now seen corresponding path program 15 times [2023-01-27 20:50:55,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:50:55,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555619629] [2023-01-27 20:50:55,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:50:55,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:50:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:50:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:50:55,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:50:55,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555619629] [2023-01-27 20:50:55,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555619629] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:50:55,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:50:55,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 20:50:55,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488356969] [2023-01-27 20:50:55,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:50:55,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:50:55,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:50:55,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:50:55,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:50:55,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:50:55,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 395 transitions, 4738 flow. Second operand has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:50:55,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:50:55,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:50:55,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:51:04,683 INFO L130 PetriNetUnfolder]: 34836/66146 cut-off events. [2023-01-27 20:51:04,684 INFO L131 PetriNetUnfolder]: For 423231/427594 co-relation queries the response was YES. [2023-01-27 20:51:05,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306590 conditions, 66146 events. 34836/66146 cut-off events. For 423231/427594 co-relation queries the response was YES. Maximal size of possible extension queue 2028. Compared 661301 event pairs, 17209 based on Foata normal form. 261/65358 useless extension candidates. Maximal degree in co-relation 301351. Up to 46642 conditions per place. [2023-01-27 20:51:05,872 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 334 selfloop transitions, 68 changer transitions 8/473 dead transitions. [2023-01-27 20:51:05,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 473 transitions, 6158 flow [2023-01-27 20:51:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:51:05,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:51:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 921 transitions. [2023-01-27 20:51:05,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159663865546219 [2023-01-27 20:51:05,874 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 921 transitions. [2023-01-27 20:51:05,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 921 transitions. [2023-01-27 20:51:05,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:51:05,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 921 transitions. [2023-01-27 20:51:05,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.57142857142858) internal successors, (921), 7 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:05,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:05,879 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:05,879 INFO L175 Difference]: Start difference. First operand has 187 places, 395 transitions, 4738 flow. Second operand 7 states and 921 transitions. [2023-01-27 20:51:05,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 473 transitions, 6158 flow [2023-01-27 20:51:11,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 473 transitions, 6113 flow, removed 22 selfloop flow, removed 1 redundant places. [2023-01-27 20:51:11,132 INFO L231 Difference]: Finished difference. Result has 195 places, 410 transitions, 5090 flow [2023-01-27 20:51:11,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=4695, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5090, PETRI_PLACES=195, PETRI_TRANSITIONS=410} [2023-01-27 20:51:11,133 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 136 predicate places. [2023-01-27 20:51:11,133 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 410 transitions, 5090 flow [2023-01-27 20:51:11,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.28571428571429) internal successors, (842), 7 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:11,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:51:11,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:51:11,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 20:51:11,134 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:51:11,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:51:11,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2083692493, now seen corresponding path program 16 times [2023-01-27 20:51:11,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:51:11,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600542392] [2023-01-27 20:51:11,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:51:11,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:51:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:51:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:51:11,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:51:11,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600542392] [2023-01-27 20:51:11,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600542392] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:51:11,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:51:11,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:51:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446346240] [2023-01-27 20:51:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:51:11,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:51:11,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:51:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:51:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:51:11,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:51:11,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 410 transitions, 5090 flow. Second operand has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:11,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:51:11,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:51:11,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:51:18,927 INFO L130 PetriNetUnfolder]: 27082/50443 cut-off events. [2023-01-27 20:51:18,927 INFO L131 PetriNetUnfolder]: For 338931/341536 co-relation queries the response was YES. [2023-01-27 20:51:19,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234147 conditions, 50443 events. 27082/50443 cut-off events. For 338931/341536 co-relation queries the response was YES. Maximal size of possible extension queue 1463. Compared 477804 event pairs, 12878 based on Foata normal form. 1201/50771 useless extension candidates. Maximal degree in co-relation 231219. Up to 35064 conditions per place. [2023-01-27 20:51:19,595 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 293 selfloop transitions, 113 changer transitions 39/508 dead transitions. [2023-01-27 20:51:19,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 508 transitions, 6978 flow [2023-01-27 20:51:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:51:19,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:51:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1039 transitions. [2023-01-27 20:51:19,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509313725490196 [2023-01-27 20:51:19,597 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1039 transitions. [2023-01-27 20:51:19,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1039 transitions. [2023-01-27 20:51:19,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:51:19,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1039 transitions. [2023-01-27 20:51:19,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.875) internal successors, (1039), 8 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:19,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:19,601 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:19,601 INFO L175 Difference]: Start difference. First operand has 195 places, 410 transitions, 5090 flow. Second operand 8 states and 1039 transitions. [2023-01-27 20:51:19,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 508 transitions, 6978 flow [2023-01-27 20:51:22,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 508 transitions, 6833 flow, removed 50 selfloop flow, removed 3 redundant places. [2023-01-27 20:51:22,474 INFO L231 Difference]: Finished difference. Result has 205 places, 404 transitions, 5339 flow [2023-01-27 20:51:22,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=4774, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5339, PETRI_PLACES=205, PETRI_TRANSITIONS=404} [2023-01-27 20:51:22,474 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 146 predicate places. [2023-01-27 20:51:22,474 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 404 transitions, 5339 flow [2023-01-27 20:51:22,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:22,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:51:22,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:51:22,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 20:51:22,475 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:51:22,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:51:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1614492047, now seen corresponding path program 17 times [2023-01-27 20:51:22,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:51:22,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039632157] [2023-01-27 20:51:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:51:22,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:51:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:51:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:51:22,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:51:22,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039632157] [2023-01-27 20:51:22,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039632157] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:51:22,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:51:22,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 20:51:22,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281267904] [2023-01-27 20:51:22,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:51:22,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:51:22,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:51:22,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:51:22,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 20:51:22,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:51:22,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 404 transitions, 5339 flow. Second operand has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:22,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:51:22,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:51:22,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:51:30,031 INFO L130 PetriNetUnfolder]: 24767/47254 cut-off events. [2023-01-27 20:51:30,031 INFO L131 PetriNetUnfolder]: For 350644/352726 co-relation queries the response was YES. [2023-01-27 20:51:30,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227676 conditions, 47254 events. 24767/47254 cut-off events. For 350644/352726 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 453335 event pairs, 11810 based on Foata normal form. 250/46824 useless extension candidates. Maximal degree in co-relation 225824. Up to 34941 conditions per place. [2023-01-27 20:51:30,716 INFO L137 encePairwiseOnDemand]: 245/255 looper letters, 374 selfloop transitions, 42 changer transitions 9/488 dead transitions. [2023-01-27 20:51:30,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 488 transitions, 6852 flow [2023-01-27 20:51:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:51:30,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:51:30,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 808 transitions. [2023-01-27 20:51:30,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5281045751633987 [2023-01-27 20:51:30,718 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 808 transitions. [2023-01-27 20:51:30,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 808 transitions. [2023-01-27 20:51:30,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:51:30,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 808 transitions. [2023-01-27 20:51:30,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:30,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:30,722 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 255.0) internal successors, (1785), 7 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:30,722 INFO L175 Difference]: Start difference. First operand has 205 places, 404 transitions, 5339 flow. Second operand 6 states and 808 transitions. [2023-01-27 20:51:30,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 488 transitions, 6852 flow [2023-01-27 20:51:33,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 488 transitions, 6745 flow, removed 50 selfloop flow, removed 1 redundant places. [2023-01-27 20:51:33,329 INFO L231 Difference]: Finished difference. Result has 213 places, 411 transitions, 5505 flow [2023-01-27 20:51:33,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5244, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5505, PETRI_PLACES=213, PETRI_TRANSITIONS=411} [2023-01-27 20:51:33,330 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 154 predicate places. [2023-01-27 20:51:33,330 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 411 transitions, 5505 flow [2023-01-27 20:51:33,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.16666666666667) internal successors, (727), 6 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:33,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:51:33,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:51:33,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 20:51:33,330 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:51:33,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:51:33,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1386162823, now seen corresponding path program 18 times [2023-01-27 20:51:33,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:51:33,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614094338] [2023-01-27 20:51:33,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:51:33,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:51:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:51:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:51:33,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:51:33,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614094338] [2023-01-27 20:51:33,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614094338] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:51:33,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:51:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:51:33,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687121056] [2023-01-27 20:51:33,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:51:33,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:51:33,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:51:33,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:51:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:51:33,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:51:33,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 411 transitions, 5505 flow. Second operand has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:33,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:51:33,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:51:33,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:51:42,532 INFO L130 PetriNetUnfolder]: 29217/55517 cut-off events. [2023-01-27 20:51:42,533 INFO L131 PetriNetUnfolder]: For 445388/448332 co-relation queries the response was YES. [2023-01-27 20:51:43,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272719 conditions, 55517 events. 29217/55517 cut-off events. For 445388/448332 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 544896 event pairs, 11296 based on Foata normal form. 450/55147 useless extension candidates. Maximal degree in co-relation 270935. Up to 19838 conditions per place. [2023-01-27 20:51:43,229 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 371 selfloop transitions, 144 changer transitions 9/587 dead transitions. [2023-01-27 20:51:43,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 587 transitions, 8274 flow [2023-01-27 20:51:43,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:51:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:51:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1083 transitions. [2023-01-27 20:51:43,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308823529411765 [2023-01-27 20:51:43,231 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1083 transitions. [2023-01-27 20:51:43,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1083 transitions. [2023-01-27 20:51:43,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:51:43,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1083 transitions. [2023-01-27 20:51:43,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 135.375) internal successors, (1083), 8 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:43,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:43,235 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:43,235 INFO L175 Difference]: Start difference. First operand has 213 places, 411 transitions, 5505 flow. Second operand 8 states and 1083 transitions. [2023-01-27 20:51:43,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 587 transitions, 8274 flow [2023-01-27 20:51:46,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 587 transitions, 8203 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-01-27 20:51:46,777 INFO L231 Difference]: Finished difference. Result has 223 places, 438 transitions, 6416 flow [2023-01-27 20:51:46,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=5434, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6416, PETRI_PLACES=223, PETRI_TRANSITIONS=438} [2023-01-27 20:51:46,778 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 164 predicate places. [2023-01-27 20:51:46,778 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 438 transitions, 6416 flow [2023-01-27 20:51:46,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 119.625) internal successors, (957), 8 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:46,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:51:46,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:51:46,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 20:51:46,779 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 20:51:46,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:51:46,779 INFO L85 PathProgramCache]: Analyzing trace with hash 906622927, now seen corresponding path program 19 times [2023-01-27 20:51:46,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:51:46,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081544723] [2023-01-27 20:51:46,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:51:46,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:51:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:51:47,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:51:47,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:51:47,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081544723] [2023-01-27 20:51:47,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081544723] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:51:47,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:51:47,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:51:47,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371696611] [2023-01-27 20:51:47,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:51:47,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:51:47,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:51:47,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:51:47,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:51:47,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 255 [2023-01-27 20:51:47,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 438 transitions, 6416 flow. Second operand has 10 states, 10 states have (on average 118.7) internal successors, (1187), 10 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:47,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:51:47,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 255 [2023-01-27 20:51:47,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:51:57,575 INFO L130 PetriNetUnfolder]: 30155/57369 cut-off events. [2023-01-27 20:51:57,575 INFO L131 PetriNetUnfolder]: For 583899/588106 co-relation queries the response was YES. [2023-01-27 20:51:58,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296255 conditions, 57369 events. 30155/57369 cut-off events. For 583899/588106 co-relation queries the response was YES. Maximal size of possible extension queue 1688. Compared 566289 event pairs, 11084 based on Foata normal form. 794/57345 useless extension candidates. Maximal degree in co-relation 293048. Up to 27185 conditions per place. [2023-01-27 20:51:58,757 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 396 selfloop transitions, 130 changer transitions 9/598 dead transitions. [2023-01-27 20:51:58,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 598 transitions, 9036 flow [2023-01-27 20:51:58,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:51:58,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:51:58,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1209 transitions. [2023-01-27 20:51:58,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526797385620915 [2023-01-27 20:51:58,759 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1209 transitions. [2023-01-27 20:51:58,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1209 transitions. [2023-01-27 20:51:58,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:51:58,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1209 transitions. [2023-01-27 20:51:58,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 134.33333333333334) internal successors, (1209), 9 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:58,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:58,763 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:51:58,763 INFO L175 Difference]: Start difference. First operand has 223 places, 438 transitions, 6416 flow. Second operand 9 states and 1209 transitions. [2023-01-27 20:51:58,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 598 transitions, 9036 flow