/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/chl-node-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:21:03,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:21:03,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:21:03,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:21:03,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:21:03,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:21:03,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:21:03,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:21:03,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:21:03,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:21:03,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:21:03,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:21:03,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:21:03,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:21:03,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:21:03,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:21:03,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:21:03,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:21:03,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:21:03,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:21:03,864 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:21:03,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:21:03,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:21:03,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:21:03,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 20:21:03,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 20:21:03,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 20:21:03,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 20:21:03,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 20:21:03,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 20:21:03,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:21:03,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:21:03,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:21:03,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:21:03,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:21:03,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:21:03,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:21:03,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:21:03,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:21:03,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:21:03,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:21:03,896 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 20:21:03,926 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:21:03,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:21:03,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:21:03,927 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:21:03,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:21:03,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:21:03,928 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:21:03,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:21:03,929 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:21:03,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:21:03,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:21:03,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:21:03,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:21:03,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:21:03,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:21:03,930 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:21:03,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:21:03,930 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:21:03,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:21:03,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:21:03,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:21:03,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:21:03,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:21:03,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:21:03,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:21:03,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:21:03,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:21:03,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:21:03,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:21:03,931 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:21:03,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:21:03,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:21:04,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:21:04,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:21:04,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:21:04,305 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:21:04,306 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:21:04,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-01-27 20:21:05,495 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:21:05,668 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:21:05,669 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-01-27 20:21:05,677 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eaafde93/6718bcaf03ce48aa99b1869f424291f7/FLAGa14b7444f [2023-01-27 20:21:05,699 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eaafde93/6718bcaf03ce48aa99b1869f424291f7 [2023-01-27 20:21:05,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:21:05,702 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:21:05,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:21:05,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:21:05,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:21:05,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:05,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305bd224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05, skipping insertion in model container [2023-01-27 20:21:05,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:05,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:21:05,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:21:05,923 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3305,3318] [2023-01-27 20:21:05,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:21:05,945 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:21:05,961 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3305,3318] [2023-01-27 20:21:05,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:21:05,992 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:21:05,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05 WrapperNode [2023-01-27 20:21:05,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:21:05,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:21:05,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:21:05,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:21:05,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:06,010 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:06,035 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 294 [2023-01-27 20:21:06,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:21:06,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:21:06,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:21:06,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:21:06,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:06,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:06,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:06,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:06,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:06,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:06,070 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:06,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:06,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:21:06,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:21:06,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:21:06,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:21:06,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05" (1/1) ... [2023-01-27 20:21:06,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:21:06,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:21:06,111 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 20:21:06,121 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 20:21:06,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:21:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:21:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:21:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:21:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:21:06,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:21:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:21:06,153 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:21:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:21:06,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 20:21:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:21:06,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:21:06,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:21:06,155 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 20:21:06,272 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:21:06,274 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:21:06,777 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:21:06,787 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:21:06,787 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-27 20:21:06,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:21:06 BoogieIcfgContainer [2023-01-27 20:21:06,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:21:06,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:21:06,792 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:21:06,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:21:06,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:21:05" (1/3) ... [2023-01-27 20:21:06,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405c4d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:21:06, skipping insertion in model container [2023-01-27 20:21:06,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:21:05" (2/3) ... [2023-01-27 20:21:06,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405c4d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:21:06, skipping insertion in model container [2023-01-27 20:21:06,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:21:06" (3/3) ... [2023-01-27 20:21:06,800 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-01-27 20:21:06,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:21:06,821 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:21:06,821 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:21:06,908 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 20:21:06,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 343 transitions, 702 flow [2023-01-27 20:21:07,078 INFO L130 PetriNetUnfolder]: 28/341 cut-off events. [2023-01-27 20:21:07,079 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:21:07,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 341 events. 28/341 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 339 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 270. Up to 2 conditions per place. [2023-01-27 20:21:07,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 343 transitions, 702 flow [2023-01-27 20:21:07,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 333 transitions, 678 flow [2023-01-27 20:21:07,103 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:21:07,116 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 333 transitions, 678 flow [2023-01-27 20:21:07,123 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 333 transitions, 678 flow [2023-01-27 20:21:07,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 333 transitions, 678 flow [2023-01-27 20:21:07,178 INFO L130 PetriNetUnfolder]: 28/333 cut-off events. [2023-01-27 20:21:07,179 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:21:07,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 333 events. 28/333 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 338 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 270. Up to 2 conditions per place. [2023-01-27 20:21:07,184 INFO L119 LiptonReduction]: Number of co-enabled transitions 6048 [2023-01-27 20:21:19,549 INFO L134 LiptonReduction]: Checked pairs total: 6391 [2023-01-27 20:21:19,550 INFO L136 LiptonReduction]: Total number of compositions: 393 [2023-01-27 20:21:19,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:21:19,565 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;@5c4c1750, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:21:19,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 20:21:19,570 INFO L130 PetriNetUnfolder]: 5/24 cut-off events. [2023-01-27 20:21:19,570 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 20:21:19,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:19,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:19,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:19,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash 432883374, now seen corresponding path program 1 times [2023-01-27 20:21:19,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:19,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959621564] [2023-01-27 20:21:19,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:19,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:19,948 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 20:21:19,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:19,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959621564] [2023-01-27 20:21:19,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959621564] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:19,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:19,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 20:21:19,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804009271] [2023-01-27 20:21:19,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:19,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:21:19,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:21:19,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:21:19,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 736 [2023-01-27 20:21:19,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 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 20:21:19,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:19,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 736 [2023-01-27 20:21:19,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:20,069 INFO L130 PetriNetUnfolder]: 49/103 cut-off events. [2023-01-27 20:21:20,069 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-27 20:21:20,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 103 events. 49/103 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 39 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 182. Up to 103 conditions per place. [2023-01-27 20:21:20,071 INFO L137 encePairwiseOnDemand]: 733/736 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-01-27 20:21:20,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 116 flow [2023-01-27 20:21:20,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:21:20,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:21:20,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 915 transitions. [2023-01-27 20:21:20,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41440217391304346 [2023-01-27 20:21:20,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 915 transitions. [2023-01-27 20:21:20,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 915 transitions. [2023-01-27 20:21:20,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:20,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 915 transitions. [2023-01-27 20:21:20,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 0 states have call successors, (0), 0 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 20:21:20,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 736.0) internal successors, (2944), 4 states have internal predecessors, (2944), 0 states have call successors, (0), 0 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 20:21:20,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 736.0) internal successors, (2944), 4 states have internal predecessors, (2944), 0 states have call successors, (0), 0 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 20:21:20,107 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 62 flow. Second operand 3 states and 915 transitions. [2023-01-27 20:21:20,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 116 flow [2023-01-27 20:21:20,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 20:21:20,111 INFO L231 Difference]: Finished difference. Result has 26 places, 26 transitions, 66 flow [2023-01-27 20:21:20,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=26, PETRI_TRANSITIONS=26} [2023-01-27 20:21:20,117 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-01-27 20:21:20,117 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 26 transitions, 66 flow [2023-01-27 20:21:20,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 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 20:21:20,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:20,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:20,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:21:20,119 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:20,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:20,119 INFO L85 PathProgramCache]: Analyzing trace with hash 855870377, now seen corresponding path program 1 times [2023-01-27 20:21:20,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:20,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721609358] [2023-01-27 20:21:20,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:20,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:20,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 20:21:20,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:20,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721609358] [2023-01-27 20:21:20,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721609358] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:20,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:20,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:21:20,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953559822] [2023-01-27 20:21:20,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:20,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:21:20,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:20,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:21:20,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:21:20,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 736 [2023-01-27 20:21:20,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 26 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 288.75) internal successors, (1155), 4 states have internal predecessors, (1155), 0 states have call successors, (0), 0 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 20:21:20,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:20,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 736 [2023-01-27 20:21:20,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:20,352 INFO L130 PetriNetUnfolder]: 49/104 cut-off events. [2023-01-27 20:21:20,352 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 20:21:20,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 49/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 39 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 214. Up to 102 conditions per place. [2023-01-27 20:21:20,353 INFO L137 encePairwiseOnDemand]: 731/736 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-01-27 20:21:20,353 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 122 flow [2023-01-27 20:21:20,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:21:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:21:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1164 transitions. [2023-01-27 20:21:20,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953804347826087 [2023-01-27 20:21:20,356 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1164 transitions. [2023-01-27 20:21:20,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1164 transitions. [2023-01-27 20:21:20,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:20,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1164 transitions. [2023-01-27 20:21:20,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 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 20:21:20,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 0 states have call successors, (0), 0 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 20:21:20,363 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 0 states have call successors, (0), 0 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 20:21:20,363 INFO L175 Difference]: Start difference. First operand has 26 places, 26 transitions, 66 flow. Second operand 4 states and 1164 transitions. [2023-01-27 20:21:20,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 122 flow [2023-01-27 20:21:20,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 118 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 20:21:20,365 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 80 flow [2023-01-27 20:21:20,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-01-27 20:21:20,365 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-01-27 20:21:20,365 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 80 flow [2023-01-27 20:21:20,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 288.75) internal successors, (1155), 4 states have internal predecessors, (1155), 0 states have call successors, (0), 0 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 20:21:20,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:20,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:20,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 20:21:20,369 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:20,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1025184123, now seen corresponding path program 1 times [2023-01-27 20:21:20,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:20,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973082872] [2023-01-27 20:21:20,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:20,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:21:20,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:20,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973082872] [2023-01-27 20:21:20,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973082872] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:20,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:20,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:21:20,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639331741] [2023-01-27 20:21:20,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:20,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:21:20,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:20,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:21:20,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:21:20,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 736 [2023-01-27 20:21:20,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 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 20:21:20,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:20,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 736 [2023-01-27 20:21:20,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:20,533 INFO L130 PetriNetUnfolder]: 49/105 cut-off events. [2023-01-27 20:21:20,533 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 20:21:20,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 105 events. 49/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 39 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 214. Up to 104 conditions per place. [2023-01-27 20:21:20,534 INFO L137 encePairwiseOnDemand]: 732/736 looper letters, 25 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-01-27 20:21:20,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 138 flow [2023-01-27 20:21:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:21:20,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:21:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1171 transitions. [2023-01-27 20:21:20,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397758152173913 [2023-01-27 20:21:20,537 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1171 transitions. [2023-01-27 20:21:20,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1171 transitions. [2023-01-27 20:21:20,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:20,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1171 transitions. [2023-01-27 20:21:20,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 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 20:21:20,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 0 states have call successors, (0), 0 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 20:21:20,544 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 0 states have call successors, (0), 0 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 20:21:20,545 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 80 flow. Second operand 4 states and 1171 transitions. [2023-01-27 20:21:20,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 138 flow [2023-01-27 20:21:20,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 137 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:21:20,546 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 93 flow [2023-01-27 20:21:20,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-01-27 20:21:20,546 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-27 20:21:20,546 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 93 flow [2023-01-27 20:21:20,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 0 states have call successors, (0), 0 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 20:21:20,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:20,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:21:20,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 20:21:20,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:20,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:20,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2006272341, now seen corresponding path program 1 times [2023-01-27 20:21:20,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:20,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268892453] [2023-01-27 20:21:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:20,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 20:21:20,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:20,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268892453] [2023-01-27 20:21:20,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268892453] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:20,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:20,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:21:20,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315858170] [2023-01-27 20:21:20,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:20,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:21:20,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:20,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:21:20,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:21:20,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 736 [2023-01-27 20:21:20,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 291.25) internal successors, (1165), 4 states have internal predecessors, (1165), 0 states have call successors, (0), 0 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 20:21:20,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:20,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 736 [2023-01-27 20:21:20,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:20,691 INFO L130 PetriNetUnfolder]: 49/106 cut-off events. [2023-01-27 20:21:20,691 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 20:21:20,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 106 events. 49/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 39 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 221. Up to 105 conditions per place. [2023-01-27 20:21:20,693 INFO L137 encePairwiseOnDemand]: 732/736 looper letters, 26 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-01-27 20:21:20,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 153 flow [2023-01-27 20:21:20,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:21:20,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:21:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1171 transitions. [2023-01-27 20:21:20,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397758152173913 [2023-01-27 20:21:20,695 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1171 transitions. [2023-01-27 20:21:20,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1171 transitions. [2023-01-27 20:21:20,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:20,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1171 transitions. [2023-01-27 20:21:20,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 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 20:21:20,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 0 states have call successors, (0), 0 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 20:21:20,702 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 0 states have call successors, (0), 0 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 20:21:20,704 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 93 flow. Second operand 4 states and 1171 transitions. [2023-01-27 20:21:20,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 153 flow [2023-01-27 20:21:20,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 147 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 20:21:20,709 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 101 flow [2023-01-27 20:21:20,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-01-27 20:21:20,710 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-01-27 20:21:20,710 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 101 flow [2023-01-27 20:21:20,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.25) internal successors, (1165), 4 states have internal predecessors, (1165), 0 states have call successors, (0), 0 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 20:21:20,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:20,711 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] [2023-01-27 20:21:20,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 20:21:20,711 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:20,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1187833151, now seen corresponding path program 1 times [2023-01-27 20:21:20,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:20,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922903416] [2023-01-27 20:21:20,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:20,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:21,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:21,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922903416] [2023-01-27 20:21:21,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922903416] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:21,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:21,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:21:21,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128897278] [2023-01-27 20:21:21,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:21,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:21:21,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:21,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:21:21,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:21:21,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 736 [2023-01-27 20:21:21,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 101 flow. Second operand has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 20:21:21,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:21,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 736 [2023-01-27 20:21:21,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:22,214 INFO L130 PetriNetUnfolder]: 83/192 cut-off events. [2023-01-27 20:21:22,215 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-27 20:21:22,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 192 events. 83/192 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 724 event pairs, 8 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 402. Up to 84 conditions per place. [2023-01-27 20:21:22,216 INFO L137 encePairwiseOnDemand]: 725/736 looper letters, 50 selfloop transitions, 14 changer transitions 5/69 dead transitions. [2023-01-27 20:21:22,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 330 flow [2023-01-27 20:21:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:21:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:21:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2516 transitions. [2023-01-27 20:21:22,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3418478260869565 [2023-01-27 20:21:22,223 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2516 transitions. [2023-01-27 20:21:22,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2516 transitions. [2023-01-27 20:21:22,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:22,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2516 transitions. [2023-01-27 20:21:22,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.6) internal successors, (2516), 10 states have internal predecessors, (2516), 0 states have call successors, (0), 0 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 20:21:22,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 0 states have call successors, (0), 0 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 20:21:22,239 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 0 states have call successors, (0), 0 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 20:21:22,239 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 101 flow. Second operand 10 states and 2516 transitions. [2023-01-27 20:21:22,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 330 flow [2023-01-27 20:21:22,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 324 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 20:21:22,241 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 177 flow [2023-01-27 20:21:22,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=177, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-01-27 20:21:22,241 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-01-27 20:21:22,242 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 177 flow [2023-01-27 20:21:22,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 20:21:22,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:22,243 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] [2023-01-27 20:21:22,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 20:21:22,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:22,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:22,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1223626605, now seen corresponding path program 2 times [2023-01-27 20:21:22,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:22,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116312939] [2023-01-27 20:21:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:22,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:23,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:23,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116312939] [2023-01-27 20:21:23,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116312939] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:23,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:23,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 20:21:23,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896426675] [2023-01-27 20:21:23,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:23,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:21:23,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:23,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:21:23,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:21:23,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 736 [2023-01-27 20:21:23,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 20:21:23,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:23,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 736 [2023-01-27 20:21:23,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:23,841 INFO L130 PetriNetUnfolder]: 88/215 cut-off events. [2023-01-27 20:21:23,841 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2023-01-27 20:21:23,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 215 events. 88/215 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 826 event pairs, 16 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 634. Up to 88 conditions per place. [2023-01-27 20:21:23,842 INFO L137 encePairwiseOnDemand]: 727/736 looper letters, 53 selfloop transitions, 18 changer transitions 5/76 dead transitions. [2023-01-27 20:21:23,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 460 flow [2023-01-27 20:21:23,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:21:23,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:21:23,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2355 transitions. [2023-01-27 20:21:23,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3555253623188406 [2023-01-27 20:21:23,847 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2355 transitions. [2023-01-27 20:21:23,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2355 transitions. [2023-01-27 20:21:23,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:23,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2355 transitions. [2023-01-27 20:21:23,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 261.6666666666667) internal successors, (2355), 9 states have internal predecessors, (2355), 0 states have call successors, (0), 0 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 20:21:23,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:23,858 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:23,858 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 177 flow. Second operand 9 states and 2355 transitions. [2023-01-27 20:21:23,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 460 flow [2023-01-27 20:21:23,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 453 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-27 20:21:23,863 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 297 flow [2023-01-27 20:21:23,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-01-27 20:21:23,865 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2023-01-27 20:21:23,865 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 297 flow [2023-01-27 20:21:23,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 20:21:23,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:23,867 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] [2023-01-27 20:21:23,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 20:21:23,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:23,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:23,867 INFO L85 PathProgramCache]: Analyzing trace with hash -12608099, now seen corresponding path program 3 times [2023-01-27 20:21:23,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:23,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35882320] [2023-01-27 20:21:23,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:23,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:24,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:24,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35882320] [2023-01-27 20:21:24,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35882320] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:24,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:24,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 20:21:24,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782219119] [2023-01-27 20:21:24,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:24,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:21:24,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:24,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:21:24,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:21:24,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 736 [2023-01-27 20:21:24,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 20:21:24,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:24,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 736 [2023-01-27 20:21:24,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:24,806 INFO L130 PetriNetUnfolder]: 127/319 cut-off events. [2023-01-27 20:21:24,806 INFO L131 PetriNetUnfolder]: For 551/551 co-relation queries the response was YES. [2023-01-27 20:21:24,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 319 events. 127/319 cut-off events. For 551/551 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1479 event pairs, 49 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 1104. Up to 160 conditions per place. [2023-01-27 20:21:24,808 INFO L137 encePairwiseOnDemand]: 727/736 looper letters, 50 selfloop transitions, 31 changer transitions 5/86 dead transitions. [2023-01-27 20:21:24,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 643 flow [2023-01-27 20:21:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:21:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:21:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2102 transitions. [2023-01-27 20:21:24,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569972826086957 [2023-01-27 20:21:24,812 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2102 transitions. [2023-01-27 20:21:24,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2102 transitions. [2023-01-27 20:21:24,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:24,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2102 transitions. [2023-01-27 20:21:24,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 262.75) internal successors, (2102), 8 states have internal predecessors, (2102), 0 states have call successors, (0), 0 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 20:21:24,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 0 states have call successors, (0), 0 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 20:21:24,831 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 0 states have call successors, (0), 0 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 20:21:24,831 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 297 flow. Second operand 8 states and 2102 transitions. [2023-01-27 20:21:24,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 643 flow [2023-01-27 20:21:24,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 629 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-27 20:21:24,835 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 482 flow [2023-01-27 20:21:24,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=482, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-01-27 20:21:24,837 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 37 predicate places. [2023-01-27 20:21:24,837 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 482 flow [2023-01-27 20:21:24,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 20:21:24,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:24,837 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] [2023-01-27 20:21:24,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 20:21:24,838 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:24,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1226252381, now seen corresponding path program 4 times [2023-01-27 20:21:24,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:24,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653200480] [2023-01-27 20:21:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:24,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:25,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:25,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653200480] [2023-01-27 20:21:25,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653200480] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:25,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:25,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 20:21:25,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539620152] [2023-01-27 20:21:25,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:25,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:21:25,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:25,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:21:25,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:21:25,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 736 [2023-01-27 20:21:25,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 269.14285714285717) internal successors, (1884), 7 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:25,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:25,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 736 [2023-01-27 20:21:25,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:25,869 INFO L130 PetriNetUnfolder]: 126/320 cut-off events. [2023-01-27 20:21:25,869 INFO L131 PetriNetUnfolder]: For 769/769 co-relation queries the response was YES. [2023-01-27 20:21:25,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 320 events. 126/320 cut-off events. For 769/769 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1513 event pairs, 37 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1258. Up to 178 conditions per place. [2023-01-27 20:21:25,871 INFO L137 encePairwiseOnDemand]: 729/736 looper letters, 77 selfloop transitions, 12 changer transitions 5/94 dead transitions. [2023-01-27 20:21:25,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 94 transitions, 809 flow [2023-01-27 20:21:25,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:21:25,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:21:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1927 transitions. [2023-01-27 20:21:25,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3740295031055901 [2023-01-27 20:21:25,875 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1927 transitions. [2023-01-27 20:21:25,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1927 transitions. [2023-01-27 20:21:25,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:25,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1927 transitions. [2023-01-27 20:21:25,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 275.2857142857143) internal successors, (1927), 7 states have internal predecessors, (1927), 0 states have call successors, (0), 0 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 20:21:25,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 0 states have call successors, (0), 0 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 20:21:25,882 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 0 states have call successors, (0), 0 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 20:21:25,882 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 482 flow. Second operand 7 states and 1927 transitions. [2023-01-27 20:21:25,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 94 transitions, 809 flow [2023-01-27 20:21:25,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 791 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-01-27 20:21:25,887 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 565 flow [2023-01-27 20:21:25,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=565, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2023-01-27 20:21:25,887 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 46 predicate places. [2023-01-27 20:21:25,887 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 565 flow [2023-01-27 20:21:25,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 269.14285714285717) internal successors, (1884), 7 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:25,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:25,888 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] [2023-01-27 20:21:25,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 20:21:25,888 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:25,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:25,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1088873191, now seen corresponding path program 5 times [2023-01-27 20:21:25,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:25,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741236463] [2023-01-27 20:21:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:25,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:26,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:26,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741236463] [2023-01-27 20:21:26,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741236463] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:26,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:26,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 20:21:26,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645530937] [2023-01-27 20:21:26,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:26,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:21:26,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:26,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:21:26,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:21:26,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 736 [2023-01-27 20:21:26,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 565 flow. Second operand has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 20:21:26,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:26,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 736 [2023-01-27 20:21:26,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:26,804 INFO L130 PetriNetUnfolder]: 125/313 cut-off events. [2023-01-27 20:21:26,804 INFO L131 PetriNetUnfolder]: For 1118/1118 co-relation queries the response was YES. [2023-01-27 20:21:26,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 313 events. 125/313 cut-off events. For 1118/1118 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1432 event pairs, 53 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1333. Up to 178 conditions per place. [2023-01-27 20:21:26,806 INFO L137 encePairwiseOnDemand]: 728/736 looper letters, 61 selfloop transitions, 19 changer transitions 9/89 dead transitions. [2023-01-27 20:21:26,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 833 flow [2023-01-27 20:21:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:21:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:21:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1843 transitions. [2023-01-27 20:21:26,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577251552795031 [2023-01-27 20:21:26,810 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1843 transitions. [2023-01-27 20:21:26,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1843 transitions. [2023-01-27 20:21:26,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:26,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1843 transitions. [2023-01-27 20:21:26,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.2857142857143) internal successors, (1843), 7 states have internal predecessors, (1843), 0 states have call successors, (0), 0 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 20:21:26,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 0 states have call successors, (0), 0 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 20:21:26,817 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 0 states have call successors, (0), 0 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 20:21:26,817 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 565 flow. Second operand 7 states and 1843 transitions. [2023-01-27 20:21:26,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 833 flow [2023-01-27 20:21:26,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 89 transitions, 818 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-27 20:21:26,824 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 639 flow [2023-01-27 20:21:26,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=639, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2023-01-27 20:21:26,824 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 52 predicate places. [2023-01-27 20:21:26,825 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 639 flow [2023-01-27 20:21:26,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 20:21:26,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:26,825 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] [2023-01-27 20:21:26,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 20:21:26,825 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:26,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash 73416431, now seen corresponding path program 6 times [2023-01-27 20:21:26,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:26,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737652354] [2023-01-27 20:21:26,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:26,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:27,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:27,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:27,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737652354] [2023-01-27 20:21:27,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737652354] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:27,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:27,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:21:27,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759538041] [2023-01-27 20:21:27,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:27,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:21:27,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:27,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:21:27,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:21:27,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 736 [2023-01-27 20:21:27,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 639 flow. Second operand has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 20:21:27,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:27,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 736 [2023-01-27 20:21:27,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:28,210 INFO L130 PetriNetUnfolder]: 126/320 cut-off events. [2023-01-27 20:21:28,210 INFO L131 PetriNetUnfolder]: For 1229/1229 co-relation queries the response was YES. [2023-01-27 20:21:28,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 320 events. 126/320 cut-off events. For 1229/1229 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1502 event pairs, 15 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1425. Up to 120 conditions per place. [2023-01-27 20:21:28,212 INFO L137 encePairwiseOnDemand]: 725/736 looper letters, 57 selfloop transitions, 33 changer transitions 5/95 dead transitions. [2023-01-27 20:21:28,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 948 flow [2023-01-27 20:21:28,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 20:21:28,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 20:21:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2507 transitions. [2023-01-27 20:21:28,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2023-01-27 20:21:28,218 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2507 transitions. [2023-01-27 20:21:28,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2507 transitions. [2023-01-27 20:21:28,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:28,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2507 transitions. [2023-01-27 20:21:28,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 250.7) internal successors, (2507), 10 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:28,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 0 states have call successors, (0), 0 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 20:21:28,229 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 0 states have call successors, (0), 0 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 20:21:28,230 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 639 flow. Second operand 10 states and 2507 transitions. [2023-01-27 20:21:28,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 948 flow [2023-01-27 20:21:28,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 915 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-27 20:21:28,236 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 779 flow [2023-01-27 20:21:28,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=779, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2023-01-27 20:21:28,237 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 62 predicate places. [2023-01-27 20:21:28,237 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 779 flow [2023-01-27 20:21:28,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 20:21:28,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:28,238 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] [2023-01-27 20:21:28,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 20:21:28,238 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:28,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:28,238 INFO L85 PathProgramCache]: Analyzing trace with hash 328223971, now seen corresponding path program 7 times [2023-01-27 20:21:28,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:28,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264096507] [2023-01-27 20:21:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:28,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:28,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:28,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264096507] [2023-01-27 20:21:28,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264096507] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:28,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:28,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:21:28,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294000438] [2023-01-27 20:21:28,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:28,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:21:28,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:28,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:21:28,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:21:28,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 736 [2023-01-27 20:21:28,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 779 flow. Second operand has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 20:21:28,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:28,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 736 [2023-01-27 20:21:28,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:29,270 INFO L130 PetriNetUnfolder]: 125/313 cut-off events. [2023-01-27 20:21:29,270 INFO L131 PetriNetUnfolder]: For 1813/1813 co-relation queries the response was YES. [2023-01-27 20:21:29,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 313 events. 125/313 cut-off events. For 1813/1813 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1428 event pairs, 41 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1561. Up to 212 conditions per place. [2023-01-27 20:21:29,272 INFO L137 encePairwiseOnDemand]: 725/736 looper letters, 44 selfloop transitions, 39 changer transitions 5/88 dead transitions. [2023-01-27 20:21:29,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 88 transitions, 1019 flow [2023-01-27 20:21:29,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:21:29,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:21:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2254 transitions. [2023-01-27 20:21:29,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2023-01-27 20:21:29,277 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2254 transitions. [2023-01-27 20:21:29,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2254 transitions. [2023-01-27 20:21:29,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:29,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2254 transitions. [2023-01-27 20:21:29,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.44444444444446) internal successors, (2254), 9 states have internal predecessors, (2254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:29,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:29,287 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:29,287 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 779 flow. Second operand 9 states and 2254 transitions. [2023-01-27 20:21:29,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 88 transitions, 1019 flow [2023-01-27 20:21:29,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 88 transitions, 1001 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-27 20:21:29,294 INFO L231 Difference]: Finished difference. Result has 94 places, 75 transitions, 905 flow [2023-01-27 20:21:29,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=905, PETRI_PLACES=94, PETRI_TRANSITIONS=75} [2023-01-27 20:21:29,295 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 67 predicate places. [2023-01-27 20:21:29,295 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 75 transitions, 905 flow [2023-01-27 20:21:29,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 20:21:29,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:29,296 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] [2023-01-27 20:21:29,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 20:21:29,296 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:29,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:29,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1402950657, now seen corresponding path program 8 times [2023-01-27 20:21:29,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:29,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652700601] [2023-01-27 20:21:29,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:29,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:29,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:29,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652700601] [2023-01-27 20:21:29,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652700601] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:29,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:29,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:21:29,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381854999] [2023-01-27 20:21:29,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:29,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:21:29,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:21:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:21:29,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 736 [2023-01-27 20:21:29,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 75 transitions, 905 flow. Second operand has 11 states, 11 states have (on average 241.0) internal successors, (2651), 11 states have internal predecessors, (2651), 0 states have call successors, (0), 0 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 20:21:29,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:29,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 736 [2023-01-27 20:21:29,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:30,484 INFO L130 PetriNetUnfolder]: 149/375 cut-off events. [2023-01-27 20:21:30,485 INFO L131 PetriNetUnfolder]: For 2815/2815 co-relation queries the response was YES. [2023-01-27 20:21:30,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 375 events. 149/375 cut-off events. For 2815/2815 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1891 event pairs, 11 based on Foata normal form. 1/375 useless extension candidates. Maximal degree in co-relation 2009. Up to 122 conditions per place. [2023-01-27 20:21:30,488 INFO L137 encePairwiseOnDemand]: 726/736 looper letters, 59 selfloop transitions, 46 changer transitions 5/110 dead transitions. [2023-01-27 20:21:30,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 110 transitions, 1344 flow [2023-01-27 20:21:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:21:30,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:21:30,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2216 transitions. [2023-01-27 20:21:30,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33454106280193235 [2023-01-27 20:21:30,498 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2216 transitions. [2023-01-27 20:21:30,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2216 transitions. [2023-01-27 20:21:30,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:30,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2216 transitions. [2023-01-27 20:21:30,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.22222222222223) internal successors, (2216), 9 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:21:30,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:30,507 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:30,507 INFO L175 Difference]: Start difference. First operand has 94 places, 75 transitions, 905 flow. Second operand 9 states and 2216 transitions. [2023-01-27 20:21:30,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 110 transitions, 1344 flow [2023-01-27 20:21:30,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 110 transitions, 1287 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-27 20:21:30,519 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 1121 flow [2023-01-27 20:21:30,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1121, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2023-01-27 20:21:30,520 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 72 predicate places. [2023-01-27 20:21:30,520 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 1121 flow [2023-01-27 20:21:30,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 241.0) internal successors, (2651), 11 states have internal predecessors, (2651), 0 states have call successors, (0), 0 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 20:21:30,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:30,521 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] [2023-01-27 20:21:30,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 20:21:30,522 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:30,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:30,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1906425293, now seen corresponding path program 9 times [2023-01-27 20:21:30,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:30,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19269514] [2023-01-27 20:21:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:30,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:31,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:31,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19269514] [2023-01-27 20:21:31,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19269514] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:31,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:31,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 20:21:31,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461576031] [2023-01-27 20:21:31,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:31,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 20:21:31,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:31,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 20:21:31,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:21:31,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 736 [2023-01-27 20:21:31,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 20:21:31,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:31,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 736 [2023-01-27 20:21:31,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:31,799 INFO L130 PetriNetUnfolder]: 148/368 cut-off events. [2023-01-27 20:21:31,799 INFO L131 PetriNetUnfolder]: For 3810/3810 co-relation queries the response was YES. [2023-01-27 20:21:31,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2227 conditions, 368 events. 148/368 cut-off events. For 3810/3810 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1830 event pairs, 38 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 2174. Up to 196 conditions per place. [2023-01-27 20:21:31,802 INFO L137 encePairwiseOnDemand]: 726/736 looper letters, 62 selfloop transitions, 28 changer transitions 10/100 dead transitions. [2023-01-27 20:21:31,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 100 transitions, 1391 flow [2023-01-27 20:21:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:21:31,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:21:31,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2258 transitions. [2023-01-27 20:21:31,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3408816425120773 [2023-01-27 20:21:31,806 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2258 transitions. [2023-01-27 20:21:31,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2258 transitions. [2023-01-27 20:21:31,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:31,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2258 transitions. [2023-01-27 20:21:31,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.88888888888889) internal successors, (2258), 9 states have internal predecessors, (2258), 0 states have call successors, (0), 0 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 20:21:31,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:31,814 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:31,815 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 1121 flow. Second operand 9 states and 2258 transitions. [2023-01-27 20:21:31,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 100 transitions, 1391 flow [2023-01-27 20:21:31,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 100 transitions, 1368 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-01-27 20:21:31,836 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 1179 flow [2023-01-27 20:21:31,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1179, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2023-01-27 20:21:31,837 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 78 predicate places. [2023-01-27 20:21:31,837 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 1179 flow [2023-01-27 20:21:31,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 0 states have call successors, (0), 0 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 20:21:31,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:31,838 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] [2023-01-27 20:21:31,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 20:21:31,838 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:31,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:31,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1423168621, now seen corresponding path program 10 times [2023-01-27 20:21:31,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:31,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089058411] [2023-01-27 20:21:31,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:31,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:32,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:32,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089058411] [2023-01-27 20:21:32,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089058411] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:32,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:32,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:21:32,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682559622] [2023-01-27 20:21:32,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:32,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:21:32,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:32,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:21:32,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:21:32,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 736 [2023-01-27 20:21:32,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 1179 flow. Second operand has 11 states, 11 states have (on average 241.0) internal successors, (2651), 11 states have internal predecessors, (2651), 0 states have call successors, (0), 0 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 20:21:32,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:32,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 736 [2023-01-27 20:21:32,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:33,090 INFO L130 PetriNetUnfolder]: 143/352 cut-off events. [2023-01-27 20:21:33,091 INFO L131 PetriNetUnfolder]: For 3798/3798 co-relation queries the response was YES. [2023-01-27 20:21:33,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2222 conditions, 352 events. 143/352 cut-off events. For 3798/3798 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1696 event pairs, 40 based on Foata normal form. 1/352 useless extension candidates. Maximal degree in co-relation 2169. Up to 229 conditions per place. [2023-01-27 20:21:33,094 INFO L137 encePairwiseOnDemand]: 726/736 looper letters, 48 selfloop transitions, 45 changer transitions 5/98 dead transitions. [2023-01-27 20:21:33,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 98 transitions, 1445 flow [2023-01-27 20:21:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:21:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:21:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1960 transitions. [2023-01-27 20:21:33,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3328804347826087 [2023-01-27 20:21:33,097 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1960 transitions. [2023-01-27 20:21:33,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1960 transitions. [2023-01-27 20:21:33,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:33,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1960 transitions. [2023-01-27 20:21:33,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 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 20:21:33,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 0 states have call successors, (0), 0 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 20:21:33,106 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 0 states have call successors, (0), 0 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 20:21:33,106 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 1179 flow. Second operand 8 states and 1960 transitions. [2023-01-27 20:21:33,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 98 transitions, 1445 flow [2023-01-27 20:21:33,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 1375 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-01-27 20:21:33,120 INFO L231 Difference]: Finished difference. Result has 105 places, 85 transitions, 1276 flow [2023-01-27 20:21:33,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1276, PETRI_PLACES=105, PETRI_TRANSITIONS=85} [2023-01-27 20:21:33,121 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 78 predicate places. [2023-01-27 20:21:33,121 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 85 transitions, 1276 flow [2023-01-27 20:21:33,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 241.0) internal successors, (2651), 11 states have internal predecessors, (2651), 0 states have call successors, (0), 0 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 20:21:33,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:33,122 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] [2023-01-27 20:21:33,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 20:21:33,122 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:33,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:33,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1807068179, now seen corresponding path program 11 times [2023-01-27 20:21:33,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:33,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798748184] [2023-01-27 20:21:33,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:33,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:33,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:33,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798748184] [2023-01-27 20:21:33,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798748184] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:33,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:33,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 20:21:33,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466408698] [2023-01-27 20:21:33,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:33,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 20:21:33,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:33,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 20:21:33,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-27 20:21:33,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 736 [2023-01-27 20:21:33,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 85 transitions, 1276 flow. Second operand has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 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 20:21:33,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:33,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 736 [2023-01-27 20:21:33,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:34,172 INFO L130 PetriNetUnfolder]: 143/362 cut-off events. [2023-01-27 20:21:34,172 INFO L131 PetriNetUnfolder]: For 4462/4462 co-relation queries the response was YES. [2023-01-27 20:21:34,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2364 conditions, 362 events. 143/362 cut-off events. For 4462/4462 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1787 event pairs, 22 based on Foata normal form. 2/363 useless extension candidates. Maximal degree in co-relation 2310. Up to 246 conditions per place. [2023-01-27 20:21:34,175 INFO L137 encePairwiseOnDemand]: 729/736 looper letters, 79 selfloop transitions, 18 changer transitions 9/106 dead transitions. [2023-01-27 20:21:34,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 1614 flow [2023-01-27 20:21:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 20:21:34,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 20:21:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2050 transitions. [2023-01-27 20:21:34,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34816576086956524 [2023-01-27 20:21:34,179 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2050 transitions. [2023-01-27 20:21:34,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2050 transitions. [2023-01-27 20:21:34,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:34,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2050 transitions. [2023-01-27 20:21:34,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 256.25) internal successors, (2050), 8 states have internal predecessors, (2050), 0 states have call successors, (0), 0 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 20:21:34,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 0 states have call successors, (0), 0 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 20:21:34,186 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 0 states have call successors, (0), 0 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 20:21:34,186 INFO L175 Difference]: Start difference. First operand has 105 places, 85 transitions, 1276 flow. Second operand 8 states and 2050 transitions. [2023-01-27 20:21:34,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 1614 flow [2023-01-27 20:21:34,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 1513 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-27 20:21:34,202 INFO L231 Difference]: Finished difference. Result has 107 places, 83 transitions, 1194 flow [2023-01-27 20:21:34,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1194, PETRI_PLACES=107, PETRI_TRANSITIONS=83} [2023-01-27 20:21:34,203 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 80 predicate places. [2023-01-27 20:21:34,203 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 83 transitions, 1194 flow [2023-01-27 20:21:34,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 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 20:21:34,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:34,204 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] [2023-01-27 20:21:34,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 20:21:34,204 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:34,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:34,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1455020015, now seen corresponding path program 12 times [2023-01-27 20:21:34,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:34,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592185429] [2023-01-27 20:21:34,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:34,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:34,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:34,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592185429] [2023-01-27 20:21:34,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592185429] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:34,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:34,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 20:21:34,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574767472] [2023-01-27 20:21:34,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:34,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 20:21:34,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 20:21:34,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-01-27 20:21:34,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 736 [2023-01-27 20:21:34,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 83 transitions, 1194 flow. Second operand has 12 states, 12 states have (on average 234.83333333333334) internal successors, (2818), 12 states have internal predecessors, (2818), 0 states have call successors, (0), 0 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 20:21:34,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:34,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 736 [2023-01-27 20:21:34,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:35,392 INFO L130 PetriNetUnfolder]: 134/336 cut-off events. [2023-01-27 20:21:35,392 INFO L131 PetriNetUnfolder]: For 3865/3865 co-relation queries the response was YES. [2023-01-27 20:21:35,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 336 events. 134/336 cut-off events. For 3865/3865 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1582 event pairs, 13 based on Foata normal form. 1/336 useless extension candidates. Maximal degree in co-relation 2100. Up to 94 conditions per place. [2023-01-27 20:21:35,395 INFO L137 encePairwiseOnDemand]: 725/736 looper letters, 46 selfloop transitions, 47 changer transitions 8/101 dead transitions. [2023-01-27 20:21:35,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 101 transitions, 1475 flow [2023-01-27 20:21:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:21:35,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:21:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2149 transitions. [2023-01-27 20:21:35,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3244263285024155 [2023-01-27 20:21:35,398 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2149 transitions. [2023-01-27 20:21:35,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2149 transitions. [2023-01-27 20:21:35,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:35,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2149 transitions. [2023-01-27 20:21:35,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 238.77777777777777) internal successors, (2149), 9 states have internal predecessors, (2149), 0 states have call successors, (0), 0 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 20:21:35,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:35,405 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:35,406 INFO L175 Difference]: Start difference. First operand has 107 places, 83 transitions, 1194 flow. Second operand 9 states and 2149 transitions. [2023-01-27 20:21:35,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 101 transitions, 1475 flow [2023-01-27 20:21:35,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 101 transitions, 1378 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-01-27 20:21:35,431 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 1234 flow [2023-01-27 20:21:35,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=104, PETRI_TRANSITIONS=84} [2023-01-27 20:21:35,431 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 77 predicate places. [2023-01-27 20:21:35,431 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 1234 flow [2023-01-27 20:21:35,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 234.83333333333334) internal successors, (2818), 12 states have internal predecessors, (2818), 0 states have call successors, (0), 0 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 20:21:35,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:35,432 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] [2023-01-27 20:21:35,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 20:21:35,432 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:35,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:35,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1783573119, now seen corresponding path program 1 times [2023-01-27 20:21:35,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:35,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185762232] [2023-01-27 20:21:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:35,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:35,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:35,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:35,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185762232] [2023-01-27 20:21:35,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185762232] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:35,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:35,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 20:21:35,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485687929] [2023-01-27 20:21:35,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:35,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 20:21:35,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:35,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 20:21:35,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-27 20:21:35,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 736 [2023-01-27 20:21:35,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 84 transitions, 1234 flow. Second operand has 7 states, 7 states have (on average 264.42857142857144) internal successors, (1851), 7 states have internal predecessors, (1851), 0 states have call successors, (0), 0 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 20:21:35,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:35,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 736 [2023-01-27 20:21:35,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:36,068 INFO L130 PetriNetUnfolder]: 129/337 cut-off events. [2023-01-27 20:21:36,069 INFO L131 PetriNetUnfolder]: For 4233/4233 co-relation queries the response was YES. [2023-01-27 20:21:36,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 337 events. 129/337 cut-off events. For 4233/4233 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1625 event pairs, 27 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 2151. Up to 128 conditions per place. [2023-01-27 20:21:36,072 INFO L137 encePairwiseOnDemand]: 729/736 looper letters, 65 selfloop transitions, 34 changer transitions 9/108 dead transitions. [2023-01-27 20:21:36,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 108 transitions, 1624 flow [2023-01-27 20:21:36,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:21:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:21:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1879 transitions. [2023-01-27 20:21:36,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36471273291925466 [2023-01-27 20:21:36,075 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1879 transitions. [2023-01-27 20:21:36,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1879 transitions. [2023-01-27 20:21:36,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:36,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1879 transitions. [2023-01-27 20:21:36,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 268.42857142857144) internal successors, (1879), 7 states have internal predecessors, (1879), 0 states have call successors, (0), 0 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 20:21:36,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 0 states have call successors, (0), 0 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 20:21:36,083 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 0 states have call successors, (0), 0 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 20:21:36,084 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 1234 flow. Second operand 7 states and 1879 transitions. [2023-01-27 20:21:36,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 108 transitions, 1624 flow [2023-01-27 20:21:36,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 108 transitions, 1500 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-01-27 20:21:36,099 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 1209 flow [2023-01-27 20:21:36,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1209, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2023-01-27 20:21:36,100 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 73 predicate places. [2023-01-27 20:21:36,100 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 1209 flow [2023-01-27 20:21:36,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 264.42857142857144) internal successors, (1851), 7 states have internal predecessors, (1851), 0 states have call successors, (0), 0 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 20:21:36,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:36,100 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] [2023-01-27 20:21:36,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 20:21:36,101 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:36,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:36,101 INFO L85 PathProgramCache]: Analyzing trace with hash -75835145, now seen corresponding path program 2 times [2023-01-27 20:21:36,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:36,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603660536] [2023-01-27 20:21:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:36,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:36,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:36,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603660536] [2023-01-27 20:21:36,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603660536] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:36,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:36,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:21:36,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906572727] [2023-01-27 20:21:36,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:36,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:21:36,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:36,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:21:36,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:21:36,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 736 [2023-01-27 20:21:36,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 1209 flow. Second operand has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 20:21:36,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:36,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 736 [2023-01-27 20:21:36,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:36,699 INFO L130 PetriNetUnfolder]: 116/326 cut-off events. [2023-01-27 20:21:36,700 INFO L131 PetriNetUnfolder]: For 3199/3199 co-relation queries the response was YES. [2023-01-27 20:21:36,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 326 events. 116/326 cut-off events. For 3199/3199 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1605 event pairs, 66 based on Foata normal form. 3/328 useless extension candidates. Maximal degree in co-relation 2005. Up to 248 conditions per place. [2023-01-27 20:21:36,702 INFO L137 encePairwiseOnDemand]: 731/736 looper letters, 58 selfloop transitions, 20 changer transitions 15/93 dead transitions. [2023-01-27 20:21:36,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 93 transitions, 1419 flow [2023-01-27 20:21:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:21:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:21:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1396 transitions. [2023-01-27 20:21:36,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793478260869565 [2023-01-27 20:21:36,706 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1396 transitions. [2023-01-27 20:21:36,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1396 transitions. [2023-01-27 20:21:36,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:36,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1396 transitions. [2023-01-27 20:21:36,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 279.2) internal successors, (1396), 5 states have internal predecessors, (1396), 0 states have call successors, (0), 0 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 20:21:36,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 0 states have call successors, (0), 0 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 20:21:36,714 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 0 states have call successors, (0), 0 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 20:21:36,714 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 1209 flow. Second operand 5 states and 1396 transitions. [2023-01-27 20:21:36,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 93 transitions, 1419 flow [2023-01-27 20:21:36,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 93 transitions, 1404 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 20:21:36,724 INFO L231 Difference]: Finished difference. Result has 103 places, 76 transitions, 1090 flow [2023-01-27 20:21:36,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1090, PETRI_PLACES=103, PETRI_TRANSITIONS=76} [2023-01-27 20:21:36,725 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 76 predicate places. [2023-01-27 20:21:36,725 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 76 transitions, 1090 flow [2023-01-27 20:21:36,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 20:21:36,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:36,725 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] [2023-01-27 20:21:36,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 20:21:36,726 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:36,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:36,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1032254093, now seen corresponding path program 3 times [2023-01-27 20:21:36,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:36,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272862268] [2023-01-27 20:21:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:36,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:37,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:37,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272862268] [2023-01-27 20:21:37,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272862268] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:37,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:37,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:21:37,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335632108] [2023-01-27 20:21:37,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:37,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:21:37,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:37,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:21:37,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:21:37,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 736 [2023-01-27 20:21:37,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 76 transitions, 1090 flow. Second operand has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 20:21:37,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:37,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 736 [2023-01-27 20:21:37,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:37,289 INFO L130 PetriNetUnfolder]: 102/284 cut-off events. [2023-01-27 20:21:37,289 INFO L131 PetriNetUnfolder]: For 2940/2940 co-relation queries the response was YES. [2023-01-27 20:21:37,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 284 events. 102/284 cut-off events. For 2940/2940 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1343 event pairs, 26 based on Foata normal form. 5/288 useless extension candidates. Maximal degree in co-relation 1819. Up to 115 conditions per place. [2023-01-27 20:21:37,291 INFO L137 encePairwiseOnDemand]: 732/736 looper letters, 38 selfloop transitions, 2 changer transitions 46/86 dead transitions. [2023-01-27 20:21:37,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 86 transitions, 1290 flow [2023-01-27 20:21:37,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:21:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:21:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1400 transitions. [2023-01-27 20:21:37,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804347826086957 [2023-01-27 20:21:37,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1400 transitions. [2023-01-27 20:21:37,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1400 transitions. [2023-01-27 20:21:37,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:37,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1400 transitions. [2023-01-27 20:21:37,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 20:21:37,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 0 states have call successors, (0), 0 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 20:21:37,297 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 0 states have call successors, (0), 0 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 20:21:37,297 INFO L175 Difference]: Start difference. First operand has 103 places, 76 transitions, 1090 flow. Second operand 5 states and 1400 transitions. [2023-01-27 20:21:37,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 86 transitions, 1290 flow [2023-01-27 20:21:37,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 86 transitions, 1225 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-01-27 20:21:37,306 INFO L231 Difference]: Finished difference. Result has 99 places, 37 transitions, 343 flow [2023-01-27 20:21:37,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=99, PETRI_TRANSITIONS=37} [2023-01-27 20:21:37,306 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 72 predicate places. [2023-01-27 20:21:37,307 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 37 transitions, 343 flow [2023-01-27 20:21:37,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 20:21:37,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:37,307 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] [2023-01-27 20:21:37,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 20:21:37,307 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:37,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:37,308 INFO L85 PathProgramCache]: Analyzing trace with hash -461531297, now seen corresponding path program 4 times [2023-01-27 20:21:37,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:37,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088244280] [2023-01-27 20:21:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:37,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:38,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:38,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088244280] [2023-01-27 20:21:38,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088244280] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:38,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:38,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-27 20:21:38,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805421700] [2023-01-27 20:21:38,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:38,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-27 20:21:38,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:38,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-27 20:21:38,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-01-27 20:21:38,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 736 [2023-01-27 20:21:38,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 37 transitions, 343 flow. Second operand has 14 states, 14 states have (on average 240.71428571428572) internal successors, (3370), 14 states have internal predecessors, (3370), 0 states have call successors, (0), 0 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 20:21:38,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:38,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 736 [2023-01-27 20:21:38,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:38,496 INFO L130 PetriNetUnfolder]: 26/87 cut-off events. [2023-01-27 20:21:38,497 INFO L131 PetriNetUnfolder]: For 917/917 co-relation queries the response was YES. [2023-01-27 20:21:38,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 87 events. 26/87 cut-off events. For 917/917 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 209 event pairs, 6 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 469. Up to 26 conditions per place. [2023-01-27 20:21:38,497 INFO L137 encePairwiseOnDemand]: 727/736 looper letters, 30 selfloop transitions, 8 changer transitions 16/54 dead transitions. [2023-01-27 20:21:38,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 54 transitions, 551 flow [2023-01-27 20:21:38,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:21:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:21:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2196 transitions. [2023-01-27 20:21:38,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33152173913043476 [2023-01-27 20:21:38,500 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2196 transitions. [2023-01-27 20:21:38,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2196 transitions. [2023-01-27 20:21:38,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:38,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2196 transitions. [2023-01-27 20:21:38,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 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 20:21:38,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:38,506 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:38,506 INFO L175 Difference]: Start difference. First operand has 99 places, 37 transitions, 343 flow. Second operand 9 states and 2196 transitions. [2023-01-27 20:21:38,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 54 transitions, 551 flow [2023-01-27 20:21:38,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 347 flow, removed 27 selfloop flow, removed 39 redundant places. [2023-01-27 20:21:38,509 INFO L231 Difference]: Finished difference. Result has 57 places, 31 transitions, 166 flow [2023-01-27 20:21:38,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=57, PETRI_TRANSITIONS=31} [2023-01-27 20:21:38,509 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-01-27 20:21:38,509 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 31 transitions, 166 flow [2023-01-27 20:21:38,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 240.71428571428572) internal successors, (3370), 14 states have internal predecessors, (3370), 0 states have call successors, (0), 0 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 20:21:38,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:38,510 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] [2023-01-27 20:21:38,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-27 20:21:38,511 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:38,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:38,511 INFO L85 PathProgramCache]: Analyzing trace with hash 481613323, now seen corresponding path program 5 times [2023-01-27 20:21:38,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:38,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517398506] [2023-01-27 20:21:38,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:38,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:39,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:39,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517398506] [2023-01-27 20:21:39,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517398506] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:39,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:39,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 20:21:39,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618026137] [2023-01-27 20:21:39,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:39,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:21:39,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:39,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:21:39,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:21:39,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 736 [2023-01-27 20:21:39,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 31 transitions, 166 flow. Second operand has 13 states, 13 states have (on average 240.84615384615384) internal successors, (3131), 13 states have internal predecessors, (3131), 0 states have call successors, (0), 0 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 20:21:39,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:39,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 736 [2023-01-27 20:21:39,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:39,525 INFO L130 PetriNetUnfolder]: 9/46 cut-off events. [2023-01-27 20:21:39,525 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-01-27 20:21:39,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 46 events. 9/46 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 3 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 171. Up to 16 conditions per place. [2023-01-27 20:21:39,526 INFO L137 encePairwiseOnDemand]: 728/736 looper letters, 22 selfloop transitions, 6 changer transitions 10/38 dead transitions. [2023-01-27 20:21:39,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 38 transitions, 259 flow [2023-01-27 20:21:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 20:21:39,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 20:21:39,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2186 transitions. [2023-01-27 20:21:39,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.330012077294686 [2023-01-27 20:21:39,529 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2186 transitions. [2023-01-27 20:21:39,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2186 transitions. [2023-01-27 20:21:39,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:39,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2186 transitions. [2023-01-27 20:21:39,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 242.88888888888889) internal successors, (2186), 9 states have internal predecessors, (2186), 0 states have call successors, (0), 0 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 20:21:39,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:39,536 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 0 states have call successors, (0), 0 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 20:21:39,536 INFO L175 Difference]: Start difference. First operand has 57 places, 31 transitions, 166 flow. Second operand 9 states and 2186 transitions. [2023-01-27 20:21:39,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 38 transitions, 259 flow [2023-01-27 20:21:39,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 218 flow, removed 2 selfloop flow, removed 15 redundant places. [2023-01-27 20:21:39,538 INFO L231 Difference]: Finished difference. Result has 49 places, 28 transitions, 121 flow [2023-01-27 20:21:39,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=121, PETRI_PLACES=49, PETRI_TRANSITIONS=28} [2023-01-27 20:21:39,538 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-01-27 20:21:39,538 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 28 transitions, 121 flow [2023-01-27 20:21:39,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.84615384615384) internal successors, (3131), 13 states have internal predecessors, (3131), 0 states have call successors, (0), 0 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 20:21:39,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:21:39,539 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] [2023-01-27 20:21:39,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 20:21:39,539 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 20:21:39,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:21:39,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1200415825, now seen corresponding path program 6 times [2023-01-27 20:21:39,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:21:39,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667386496] [2023-01-27 20:21:39,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:21:39,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:21:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:21:40,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 20:21:40,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:21:40,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667386496] [2023-01-27 20:21:40,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667386496] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:21:40,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:21:40,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 20:21:40,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654617106] [2023-01-27 20:21:40,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:21:40,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:21:40,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:21:40,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:21:40,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:21:40,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 736 [2023-01-27 20:21:40,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 28 transitions, 121 flow. Second operand has 9 states, 9 states have (on average 258.6666666666667) internal successors, (2328), 9 states have internal predecessors, (2328), 0 states have call successors, (0), 0 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 20:21:40,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:21:40,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 736 [2023-01-27 20:21:40,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:21:40,134 INFO L130 PetriNetUnfolder]: 7/33 cut-off events. [2023-01-27 20:21:40,134 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-27 20:21:40,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 33 events. 7/33 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 112. Up to 18 conditions per place. [2023-01-27 20:21:40,134 INFO L137 encePairwiseOnDemand]: 731/736 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-01-27 20:21:40,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 30 transitions, 184 flow [2023-01-27 20:21:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:21:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:21:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1563 transitions. [2023-01-27 20:21:40,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3539402173913043 [2023-01-27 20:21:40,136 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1563 transitions. [2023-01-27 20:21:40,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1563 transitions. [2023-01-27 20:21:40,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:21:40,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1563 transitions. [2023-01-27 20:21:40,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 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 20:21:40,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 736.0) internal successors, (5152), 7 states have internal predecessors, (5152), 0 states have call successors, (0), 0 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 20:21:40,141 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 736.0) internal successors, (5152), 7 states have internal predecessors, (5152), 0 states have call successors, (0), 0 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 20:21:40,141 INFO L175 Difference]: Start difference. First operand has 49 places, 28 transitions, 121 flow. Second operand 6 states and 1563 transitions. [2023-01-27 20:21:40,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 30 transitions, 184 flow [2023-01-27 20:21:40,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 158 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-01-27 20:21:40,142 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-01-27 20:21:40,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-01-27 20:21:40,144 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-01-27 20:21:40,144 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-01-27 20:21:40,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 258.6666666666667) internal successors, (2328), 9 states have internal predecessors, (2328), 0 states have call successors, (0), 0 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 20:21:40,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 20:21:40,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 20:21:40,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 20:21:40,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-27 20:21:40,147 INFO L445 BasicCegarLoop]: Path program histogram: [12, 6, 1, 1, 1, 1] [2023-01-27 20:21:40,149 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:21:40,149 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:21:40,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:21:40 BasicIcfg [2023-01-27 20:21:40,151 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:21:40,152 INFO L158 Benchmark]: Toolchain (without parser) took 34450.24ms. Allocated memory was 448.8MB in the beginning and 935.3MB in the end (delta: 486.5MB). Free memory was 398.2MB in the beginning and 743.4MB in the end (delta: -345.2MB). Peak memory consumption was 143.1MB. Max. memory is 16.0GB. [2023-01-27 20:21:40,152 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 318.8MB. Free memory was 267.4MB in the beginning and 267.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:21:40,152 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.37ms. Allocated memory is still 448.8MB. Free memory was 398.2MB in the beginning and 385.8MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 20:21:40,152 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.80ms. Allocated memory is still 448.8MB. Free memory was 385.8MB in the beginning and 383.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:21:40,152 INFO L158 Benchmark]: Boogie Preprocessor took 35.74ms. Allocated memory is still 448.8MB. Free memory was 383.3MB in the beginning and 381.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:21:40,153 INFO L158 Benchmark]: RCFGBuilder took 715.98ms. Allocated memory is still 448.8MB. Free memory was 381.2MB in the beginning and 355.1MB in the end (delta: 26.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-01-27 20:21:40,153 INFO L158 Benchmark]: TraceAbstraction took 33359.66ms. Allocated memory was 448.8MB in the beginning and 935.3MB in the end (delta: 486.5MB). Free memory was 354.3MB in the beginning and 743.4MB in the end (delta: -389.1MB). Peak memory consumption was 99.1MB. Max. memory is 16.0GB. [2023-01-27 20:21:40,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 318.8MB. Free memory was 267.4MB in the beginning and 267.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 290.37ms. Allocated memory is still 448.8MB. Free memory was 398.2MB in the beginning and 385.8MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.80ms. Allocated memory is still 448.8MB. Free memory was 385.8MB in the beginning and 383.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.74ms. Allocated memory is still 448.8MB. Free memory was 383.3MB in the beginning and 381.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 715.98ms. Allocated memory is still 448.8MB. Free memory was 381.2MB in the beginning and 355.1MB in the end (delta: 26.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 33359.66ms. Allocated memory was 448.8MB in the beginning and 935.3MB in the end (delta: 486.5MB). Free memory was 354.3MB in the beginning and 743.4MB in the end (delta: -389.1MB). Peak memory consumption was 99.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12.4s, 312 PlacesBefore, 27 PlacesAfterwards, 333 TransitionsBefore, 25 TransitionsAfterwards, 6048 CoEnabledTransitionPairs, 8 FixpointIterations, 198 TrivialSequentialCompositions, 90 ConcurrentSequentialCompositions, 57 TrivialYvCompositions, 25 ConcurrentYvCompositions, 23 ChoiceCompositions, 393 TotalNumberOfCompositions, 6391 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5583, independent: 5482, independent conditional: 0, independent unconditional: 5482, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3489, independent: 3467, independent conditional: 0, independent unconditional: 3467, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5583, independent: 2015, independent conditional: 0, independent unconditional: 2015, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 3489, unknown conditional: 0, unknown unconditional: 3489] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 93]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 408 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 33.2s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 12.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1207 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1207 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4000 IncrementalHoareTripleChecker+Invalid, 4103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 0 mSDtfsCounter, 4000 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 251 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1276occurred in iteration=14, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 486 NumberOfCodeBlocks, 486 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 8650 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 78/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 20:21:40,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...