/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-match-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:47:49,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:47:49,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:47:49,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:47:49,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:47:49,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:47:49,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:47:49,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:47:49,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:47:49,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:47:49,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:47:49,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:47:49,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:47:49,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:47:49,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:47:49,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:47:49,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:47:49,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:47:49,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:47:49,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:47:49,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:47:49,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:47:49,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:47:49,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:47:49,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 22:47:49,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 22:47:49,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 22:47:49,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 22:47:49,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 22:47:49,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 22:47:49,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:47:49,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:47:49,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:47:49,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:47:49,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:47:49,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:47:49,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:47:49,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:47:49,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:47:49,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:47:49,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:47:49,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 22:47:49,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:47:49,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:47:49,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:47:49,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:47:49,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:47:49,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:47:49,132 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:47:49,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:47:49,132 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:47:49,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:47:49,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:47:49,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:47:49,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:47:49,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:47:49,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:47:49,133 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:47:49,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:47:49,133 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:47:49,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:47:49,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:47:49,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:47:49,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:47:49,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:47:49,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:47:49,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:47:49,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:47:49,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:47:49,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:47:49,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:47:49,135 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:47:49,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:47:49,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:47:49,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:47:49,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:47:49,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:47:49,316 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:47:49,318 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:47:49,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-symm.wvr.c [2022-09-20 22:47:49,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d74470956/bfd3e35aef1242cfb8b92c2180cb36c9/FLAG8f69c6c35 [2022-09-20 22:47:49,715 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:47:49,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-symm.wvr.c [2022-09-20 22:47:49,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d74470956/bfd3e35aef1242cfb8b92c2180cb36c9/FLAG8f69c6c35 [2022-09-20 22:47:49,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d74470956/bfd3e35aef1242cfb8b92c2180cb36c9 [2022-09-20 22:47:49,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:47:49,730 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:47:49,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:47:49,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:47:49,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:47:49,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:47:49" (1/1) ... [2022-09-20 22:47:49,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5f7b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49, skipping insertion in model container [2022-09-20 22:47:49,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:47:49" (1/1) ... [2022-09-20 22:47:49,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:47:49,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:47:49,876 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-symm.wvr.c[2584,2597] [2022-09-20 22:47:49,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:47:49,889 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:47:49,902 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-symm.wvr.c[2584,2597] [2022-09-20 22:47:49,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:47:49,912 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:47:49,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49 WrapperNode [2022-09-20 22:47:49,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:47:49,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:47:49,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:47:49,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:47:49,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49" (1/1) ... [2022-09-20 22:47:49,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49" (1/1) ... [2022-09-20 22:47:49,950 INFO L138 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 180 [2022-09-20 22:47:49,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:47:49,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:47:49,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:47:49,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:47:49,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49" (1/1) ... [2022-09-20 22:47:49,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49" (1/1) ... [2022-09-20 22:47:49,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49" (1/1) ... [2022-09-20 22:47:49,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49" (1/1) ... [2022-09-20 22:47:49,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49" (1/1) ... [2022-09-20 22:47:49,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49" (1/1) ... [2022-09-20 22:47:49,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49" (1/1) ... [2022-09-20 22:47:49,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:47:49,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:47:49,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:47:49,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:47:49,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49" (1/1) ... [2022-09-20 22:47:49,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:47:49,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:47:49,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 22:47:50,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 22:47:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:47:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 22:47:50,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 22:47:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 22:47:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 22:47:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:47:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:47:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:47:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:47:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:47:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 22:47:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:47:50,018 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:47:50,090 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:47:50,092 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:47:50,325 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:47:50,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:47:50,334 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 22:47:50,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:47:50 BoogieIcfgContainer [2022-09-20 22:47:50,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:47:50,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:47:50,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:47:50,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:47:50,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:47:49" (1/3) ... [2022-09-20 22:47:50,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f160608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:47:50, skipping insertion in model container [2022-09-20 22:47:50,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:47:49" (2/3) ... [2022-09-20 22:47:50,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f160608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:47:50, skipping insertion in model container [2022-09-20 22:47:50,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:47:50" (3/3) ... [2022-09-20 22:47:50,341 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2022-09-20 22:47:50,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:47:50,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 22:47:50,352 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:47:50,416 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 22:47:50,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 252 transitions, 520 flow [2022-09-20 22:47:50,528 INFO L130 PetriNetUnfolder]: 19/250 cut-off events. [2022-09-20 22:47:50,528 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 22:47:50,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 250 events. 19/250 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 273 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2022-09-20 22:47:50,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 252 transitions, 520 flow [2022-09-20 22:47:50,548 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 241 transitions, 494 flow [2022-09-20 22:47:50,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:47:50,559 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;@77333a6c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:47:50,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 22:47:50,593 INFO L130 PetriNetUnfolder]: 19/240 cut-off events. [2022-09-20 22:47:50,593 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 22:47:50,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:50,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:50,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:50,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:50,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1530173745, now seen corresponding path program 1 times [2022-09-20 22:47:50,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:50,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899229461] [2022-09-20 22:47:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:50,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:50,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:50,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899229461] [2022-09-20 22:47:50,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899229461] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:50,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:50,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:47:50,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770975724] [2022-09-20 22:47:50,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:50,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:47:50,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:50,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:47:50,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:47:50,915 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-09-20 22:47:50,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 241 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:50,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:50,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-09-20 22:47:50,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:51,070 INFO L130 PetriNetUnfolder]: 49/589 cut-off events. [2022-09-20 22:47:51,071 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-09-20 22:47:51,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 589 events. 49/589 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2586 event pairs, 16 based on Foata normal form. 43/570 useless extension candidates. Maximal degree in co-relation 494. Up to 46 conditions per place. [2022-09-20 22:47:51,078 INFO L137 encePairwiseOnDemand]: 235/252 looper letters, 21 selfloop transitions, 2 changer transitions 3/237 dead transitions. [2022-09-20 22:47:51,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 237 transitions, 541 flow [2022-09-20 22:47:51,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:47:51,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:47:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-09-20 22:47:51,093 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9537037037037037 [2022-09-20 22:47:51,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-09-20 22:47:51,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-09-20 22:47:51,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:51,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-09-20 22:47:51,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,114 INFO L175 Difference]: Start difference. First operand has 229 places, 241 transitions, 494 flow. Second operand 3 states and 721 transitions. [2022-09-20 22:47:51,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 237 transitions, 541 flow [2022-09-20 22:47:51,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 237 transitions, 527 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 22:47:51,122 INFO L231 Difference]: Finished difference. Result has 229 places, 229 transitions, 482 flow [2022-09-20 22:47:51,123 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=229, PETRI_TRANSITIONS=229} [2022-09-20 22:47:51,127 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 0 predicate places. [2022-09-20 22:47:51,127 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 229 transitions, 482 flow [2022-09-20 22:47:51,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:51,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:51,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:47:51,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:51,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:51,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1309481427, now seen corresponding path program 2 times [2022-09-20 22:47:51,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:51,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332088551] [2022-09-20 22:47:51,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:51,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:51,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:51,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332088551] [2022-09-20 22:47:51,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332088551] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:51,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:51,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:47:51,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6785907] [2022-09-20 22:47:51,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:51,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:47:51,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:51,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:47:51,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:47:51,251 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-09-20 22:47:51,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 229 transitions, 482 flow. Second operand has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:51,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-09-20 22:47:51,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:51,351 INFO L130 PetriNetUnfolder]: 40/659 cut-off events. [2022-09-20 22:47:51,351 INFO L131 PetriNetUnfolder]: For 56/61 co-relation queries the response was YES. [2022-09-20 22:47:51,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 659 events. 40/659 cut-off events. For 56/61 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2980 event pairs, 14 based on Foata normal form. 5/624 useless extension candidates. Maximal degree in co-relation 572. Up to 51 conditions per place. [2022-09-20 22:47:51,355 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 23 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2022-09-20 22:47:51,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 236 transitions, 557 flow [2022-09-20 22:47:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:47:51,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:47:51,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2022-09-20 22:47:51,363 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9246031746031746 [2022-09-20 22:47:51,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2022-09-20 22:47:51,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2022-09-20 22:47:51,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:51,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2022-09-20 22:47:51,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,367 INFO L175 Difference]: Start difference. First operand has 229 places, 229 transitions, 482 flow. Second operand 3 states and 699 transitions. [2022-09-20 22:47:51,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 236 transitions, 557 flow [2022-09-20 22:47:51,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 236 transitions, 555 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:47:51,374 INFO L231 Difference]: Finished difference. Result has 229 places, 231 transitions, 508 flow [2022-09-20 22:47:51,374 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=508, PETRI_PLACES=229, PETRI_TRANSITIONS=231} [2022-09-20 22:47:51,375 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 0 predicate places. [2022-09-20 22:47:51,376 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 231 transitions, 508 flow [2022-09-20 22:47:51,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:51,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:51,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:47:51,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:51,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:51,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2097325865, now seen corresponding path program 1 times [2022-09-20 22:47:51,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:51,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958329174] [2022-09-20 22:47:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:51,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:51,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:51,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958329174] [2022-09-20 22:47:51,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958329174] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:51,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:51,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:51,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509507355] [2022-09-20 22:47:51,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:51,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:51,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:51,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:51,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:51,614 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:51,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 231 transitions, 508 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:51,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:51,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:51,951 INFO L130 PetriNetUnfolder]: 138/937 cut-off events. [2022-09-20 22:47:51,951 INFO L131 PetriNetUnfolder]: For 62/72 co-relation queries the response was YES. [2022-09-20 22:47:51,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 937 events. 138/937 cut-off events. For 62/72 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5210 event pairs, 74 based on Foata normal form. 1/866 useless extension candidates. Maximal degree in co-relation 1000. Up to 243 conditions per place. [2022-09-20 22:47:51,955 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 61 selfloop transitions, 3 changer transitions 24/290 dead transitions. [2022-09-20 22:47:51,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 290 transitions, 813 flow [2022-09-20 22:47:51,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:47:51,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:47:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3625 transitions. [2022-09-20 22:47:51,961 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.846171802054155 [2022-09-20 22:47:51,961 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3625 transitions. [2022-09-20 22:47:51,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3625 transitions. [2022-09-20 22:47:51,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:51,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3625 transitions. [2022-09-20 22:47:51,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 213.23529411764707) internal successors, (3625), 17 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,975 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,975 INFO L175 Difference]: Start difference. First operand has 229 places, 231 transitions, 508 flow. Second operand 17 states and 3625 transitions. [2022-09-20 22:47:51,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 290 transitions, 813 flow [2022-09-20 22:47:51,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 290 transitions, 811 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 22:47:51,980 INFO L231 Difference]: Finished difference. Result has 259 places, 233 transitions, 561 flow [2022-09-20 22:47:51,980 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=561, PETRI_PLACES=259, PETRI_TRANSITIONS=233} [2022-09-20 22:47:51,981 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 30 predicate places. [2022-09-20 22:47:51,981 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 233 transitions, 561 flow [2022-09-20 22:47:51,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:51,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:51,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:51,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:47:51,983 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:51,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:51,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1403185029, now seen corresponding path program 1 times [2022-09-20 22:47:51,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:51,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876919651] [2022-09-20 22:47:51,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:51,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:52,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:52,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876919651] [2022-09-20 22:47:52,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876919651] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:52,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:52,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:52,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330361772] [2022-09-20 22:47:52,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:52,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:52,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:52,163 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:52,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 233 transitions, 561 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:52,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:52,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:52,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:52,471 INFO L130 PetriNetUnfolder]: 156/1081 cut-off events. [2022-09-20 22:47:52,471 INFO L131 PetriNetUnfolder]: For 866/885 co-relation queries the response was YES. [2022-09-20 22:47:52,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2140 conditions, 1081 events. 156/1081 cut-off events. For 866/885 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6204 event pairs, 94 based on Foata normal form. 1/1010 useless extension candidates. Maximal degree in co-relation 2009. Up to 291 conditions per place. [2022-09-20 22:47:52,477 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 42 selfloop transitions, 13 changer transitions 20/277 dead transitions. [2022-09-20 22:47:52,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 277 transitions, 943 flow [2022-09-20 22:47:52,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:47:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:47:52,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3402 transitions. [2022-09-20 22:47:52,482 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.84375 [2022-09-20 22:47:52,483 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3402 transitions. [2022-09-20 22:47:52,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3402 transitions. [2022-09-20 22:47:52,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:52,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3402 transitions. [2022-09-20 22:47:52,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.625) internal successors, (3402), 16 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:52,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:52,495 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:52,495 INFO L175 Difference]: Start difference. First operand has 259 places, 233 transitions, 561 flow. Second operand 16 states and 3402 transitions. [2022-09-20 22:47:52,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 277 transitions, 943 flow [2022-09-20 22:47:52,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 277 transitions, 876 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-09-20 22:47:52,504 INFO L231 Difference]: Finished difference. Result has 262 places, 247 transitions, 693 flow [2022-09-20 22:47:52,505 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=693, PETRI_PLACES=262, PETRI_TRANSITIONS=247} [2022-09-20 22:47:52,506 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 33 predicate places. [2022-09-20 22:47:52,506 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 247 transitions, 693 flow [2022-09-20 22:47:52,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:52,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:52,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:52,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:47:52,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:52,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:52,510 INFO L85 PathProgramCache]: Analyzing trace with hash -210030579, now seen corresponding path program 2 times [2022-09-20 22:47:52,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:52,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855577164] [2022-09-20 22:47:52,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:52,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:52,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:52,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855577164] [2022-09-20 22:47:52,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855577164] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:52,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:52,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:52,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578781190] [2022-09-20 22:47:52,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:52,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:52,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:52,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:52,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:52,649 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:52,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 247 transitions, 693 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:52,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:52,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:52,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:52,953 INFO L130 PetriNetUnfolder]: 154/1079 cut-off events. [2022-09-20 22:47:52,953 INFO L131 PetriNetUnfolder]: For 1107/1146 co-relation queries the response was YES. [2022-09-20 22:47:52,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2310 conditions, 1079 events. 154/1079 cut-off events. For 1107/1146 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6418 event pairs, 93 based on Foata normal form. 7/1018 useless extension candidates. Maximal degree in co-relation 2214. Up to 274 conditions per place. [2022-09-20 22:47:52,958 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 67 selfloop transitions, 8 changer transitions 29/306 dead transitions. [2022-09-20 22:47:52,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 306 transitions, 1191 flow [2022-09-20 22:47:52,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:47:52,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:47:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3840 transitions. [2022-09-20 22:47:52,964 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8465608465608465 [2022-09-20 22:47:52,964 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3840 transitions. [2022-09-20 22:47:52,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3840 transitions. [2022-09-20 22:47:52,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:52,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3840 transitions. [2022-09-20 22:47:52,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.33333333333334) internal successors, (3840), 18 states have internal predecessors, (3840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:52,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:52,978 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:52,978 INFO L175 Difference]: Start difference. First operand has 262 places, 247 transitions, 693 flow. Second operand 18 states and 3840 transitions. [2022-09-20 22:47:52,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 306 transitions, 1191 flow [2022-09-20 22:47:52,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 306 transitions, 1111 flow, removed 40 selfloop flow, removed 4 redundant places. [2022-09-20 22:47:52,986 INFO L231 Difference]: Finished difference. Result has 280 places, 247 transitions, 700 flow [2022-09-20 22:47:52,987 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=700, PETRI_PLACES=280, PETRI_TRANSITIONS=247} [2022-09-20 22:47:52,987 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 51 predicate places. [2022-09-20 22:47:52,987 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 247 transitions, 700 flow [2022-09-20 22:47:52,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:52,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:52,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:52,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:47:52,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:52,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:52,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1260147575, now seen corresponding path program 3 times [2022-09-20 22:47:52,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:52,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585807978] [2022-09-20 22:47:52,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:52,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:53,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:53,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585807978] [2022-09-20 22:47:53,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585807978] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:53,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:53,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:53,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367415070] [2022-09-20 22:47:53,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:53,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:53,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:53,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:53,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:53,082 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:53,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 247 transitions, 700 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:53,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:53,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:53,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:53,368 INFO L130 PetriNetUnfolder]: 159/1195 cut-off events. [2022-09-20 22:47:53,368 INFO L131 PetriNetUnfolder]: For 1938/1981 co-relation queries the response was YES. [2022-09-20 22:47:53,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2751 conditions, 1195 events. 159/1195 cut-off events. For 1938/1981 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7425 event pairs, 95 based on Foata normal form. 1/1123 useless extension candidates. Maximal degree in co-relation 2685. Up to 293 conditions per place. [2022-09-20 22:47:53,376 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 83 selfloop transitions, 10 changer transitions 28/323 dead transitions. [2022-09-20 22:47:53,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 323 transitions, 1430 flow [2022-09-20 22:47:53,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 22:47:53,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 22:47:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3625 transitions. [2022-09-20 22:47:53,381 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.846171802054155 [2022-09-20 22:47:53,381 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3625 transitions. [2022-09-20 22:47:53,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3625 transitions. [2022-09-20 22:47:53,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:53,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3625 transitions. [2022-09-20 22:47:53,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 213.23529411764707) internal successors, (3625), 17 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:53,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:53,393 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 252.0) internal successors, (4536), 18 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:53,393 INFO L175 Difference]: Start difference. First operand has 280 places, 247 transitions, 700 flow. Second operand 17 states and 3625 transitions. [2022-09-20 22:47:53,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 323 transitions, 1430 flow [2022-09-20 22:47:53,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 323 transitions, 1362 flow, removed 32 selfloop flow, removed 10 redundant places. [2022-09-20 22:47:53,403 INFO L231 Difference]: Finished difference. Result has 290 places, 251 transitions, 781 flow [2022-09-20 22:47:53,403 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=781, PETRI_PLACES=290, PETRI_TRANSITIONS=251} [2022-09-20 22:47:53,404 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 61 predicate places. [2022-09-20 22:47:53,432 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 251 transitions, 781 flow [2022-09-20 22:47:53,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:53,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:53,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:53,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:47:53,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:53,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash 371214377, now seen corresponding path program 4 times [2022-09-20 22:47:53,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:53,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897178259] [2022-09-20 22:47:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:53,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:53,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:53,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897178259] [2022-09-20 22:47:53,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897178259] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:53,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:53,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:53,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082051029] [2022-09-20 22:47:53,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:53,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:53,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:53,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:53,534 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:53,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 251 transitions, 781 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:53,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:53,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:53,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:53,798 INFO L130 PetriNetUnfolder]: 152/1190 cut-off events. [2022-09-20 22:47:53,798 INFO L131 PetriNetUnfolder]: For 1962/2005 co-relation queries the response was YES. [2022-09-20 22:47:53,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2799 conditions, 1190 events. 152/1190 cut-off events. For 1962/2005 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7340 event pairs, 106 based on Foata normal form. 4/1118 useless extension candidates. Maximal degree in co-relation 2672. Up to 332 conditions per place. [2022-09-20 22:47:53,806 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 45 selfloop transitions, 4 changer transitions 25/276 dead transitions. [2022-09-20 22:47:53,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 276 transitions, 1119 flow [2022-09-20 22:47:53,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:47:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:47:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2769 transitions. [2022-09-20 22:47:53,810 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-09-20 22:47:53,810 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2769 transitions. [2022-09-20 22:47:53,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2769 transitions. [2022-09-20 22:47:53,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:53,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2769 transitions. [2022-09-20 22:47:53,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 213.0) internal successors, (2769), 13 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:53,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:53,818 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:53,818 INFO L175 Difference]: Start difference. First operand has 290 places, 251 transitions, 781 flow. Second operand 13 states and 2769 transitions. [2022-09-20 22:47:53,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 276 transitions, 1119 flow [2022-09-20 22:47:53,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 276 transitions, 1074 flow, removed 21 selfloop flow, removed 12 redundant places. [2022-09-20 22:47:53,831 INFO L231 Difference]: Finished difference. Result has 283 places, 243 transitions, 690 flow [2022-09-20 22:47:53,831 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=690, PETRI_PLACES=283, PETRI_TRANSITIONS=243} [2022-09-20 22:47:53,832 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 54 predicate places. [2022-09-20 22:47:53,832 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 243 transitions, 690 flow [2022-09-20 22:47:53,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:53,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:53,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:53,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:47:53,833 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:53,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:53,833 INFO L85 PathProgramCache]: Analyzing trace with hash -118498505, now seen corresponding path program 5 times [2022-09-20 22:47:53,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:53,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658352993] [2022-09-20 22:47:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:53,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:53,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:53,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658352993] [2022-09-20 22:47:53,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658352993] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:53,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:53,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398473035] [2022-09-20 22:47:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:53,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:53,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:53,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:53,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:53,933 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:53,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 243 transitions, 690 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:53,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:53,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:53,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:54,200 INFO L130 PetriNetUnfolder]: 160/1186 cut-off events. [2022-09-20 22:47:54,200 INFO L131 PetriNetUnfolder]: For 1994/2032 co-relation queries the response was YES. [2022-09-20 22:47:54,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2815 conditions, 1186 events. 160/1186 cut-off events. For 1994/2032 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7276 event pairs, 106 based on Foata normal form. 1/1114 useless extension candidates. Maximal degree in co-relation 2694. Up to 353 conditions per place. [2022-09-20 22:47:54,208 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 50 selfloop transitions, 14 changer transitions 20/286 dead transitions. [2022-09-20 22:47:54,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 286 transitions, 1237 flow [2022-09-20 22:47:54,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 22:47:54,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 22:47:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2983 transitions. [2022-09-20 22:47:54,213 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8455215419501134 [2022-09-20 22:47:54,213 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2983 transitions. [2022-09-20 22:47:54,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2983 transitions. [2022-09-20 22:47:54,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:54,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2983 transitions. [2022-09-20 22:47:54,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 213.07142857142858) internal successors, (2983), 14 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,222 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,222 INFO L175 Difference]: Start difference. First operand has 283 places, 243 transitions, 690 flow. Second operand 14 states and 2983 transitions. [2022-09-20 22:47:54,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 286 transitions, 1237 flow [2022-09-20 22:47:54,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 286 transitions, 1123 flow, removed 38 selfloop flow, removed 13 redundant places. [2022-09-20 22:47:54,232 INFO L231 Difference]: Finished difference. Result has 281 places, 253 transitions, 819 flow [2022-09-20 22:47:54,232 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=819, PETRI_PLACES=281, PETRI_TRANSITIONS=253} [2022-09-20 22:47:54,233 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 52 predicate places. [2022-09-20 22:47:54,233 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 253 transitions, 819 flow [2022-09-20 22:47:54,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:54,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:54,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:47:54,234 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:54,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:54,234 INFO L85 PathProgramCache]: Analyzing trace with hash -153335209, now seen corresponding path program 6 times [2022-09-20 22:47:54,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:54,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863721726] [2022-09-20 22:47:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:54,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:54,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:54,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:54,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863721726] [2022-09-20 22:47:54,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863721726] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:54,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:54,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:54,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214032384] [2022-09-20 22:47:54,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:54,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:54,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:54,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:54,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:54,325 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:54,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 253 transitions, 819 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:54,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:54,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:54,564 INFO L130 PetriNetUnfolder]: 158/1229 cut-off events. [2022-09-20 22:47:54,564 INFO L131 PetriNetUnfolder]: For 1884/1924 co-relation queries the response was YES. [2022-09-20 22:47:54,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2855 conditions, 1229 events. 158/1229 cut-off events. For 1884/1924 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7784 event pairs, 104 based on Foata normal form. 1/1154 useless extension candidates. Maximal degree in co-relation 2733. Up to 337 conditions per place. [2022-09-20 22:47:54,570 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 56 selfloop transitions, 11 changer transitions 21/290 dead transitions. [2022-09-20 22:47:54,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 290 transitions, 1355 flow [2022-09-20 22:47:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-20 22:47:54,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-20 22:47:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3192 transitions. [2022-09-20 22:47:54,573 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-09-20 22:47:54,573 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3192 transitions. [2022-09-20 22:47:54,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3192 transitions. [2022-09-20 22:47:54,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:54,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3192 transitions. [2022-09-20 22:47:54,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.8) internal successors, (3192), 15 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,581 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,581 INFO L175 Difference]: Start difference. First operand has 281 places, 253 transitions, 819 flow. Second operand 15 states and 3192 transitions. [2022-09-20 22:47:54,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 290 transitions, 1355 flow [2022-09-20 22:47:54,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 290 transitions, 1287 flow, removed 27 selfloop flow, removed 6 redundant places. [2022-09-20 22:47:54,591 INFO L231 Difference]: Finished difference. Result has 294 places, 258 transitions, 898 flow [2022-09-20 22:47:54,591 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=898, PETRI_PLACES=294, PETRI_TRANSITIONS=258} [2022-09-20 22:47:54,592 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 65 predicate places. [2022-09-20 22:47:54,592 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 258 transitions, 898 flow [2022-09-20 22:47:54,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:54,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:54,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 22:47:54,593 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:54,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1190978199, now seen corresponding path program 7 times [2022-09-20 22:47:54,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:54,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838216458] [2022-09-20 22:47:54,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:54,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:54,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:54,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838216458] [2022-09-20 22:47:54,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838216458] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:54,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:54,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:54,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745163897] [2022-09-20 22:47:54,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:54,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:54,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:54,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:54,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:54,676 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:54,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 258 transitions, 898 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:54,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:54,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:54,955 INFO L130 PetriNetUnfolder]: 155/1216 cut-off events. [2022-09-20 22:47:54,955 INFO L131 PetriNetUnfolder]: For 2361/2412 co-relation queries the response was YES. [2022-09-20 22:47:54,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 1216 events. 155/1216 cut-off events. For 2361/2412 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7668 event pairs, 103 based on Foata normal form. 3/1145 useless extension candidates. Maximal degree in co-relation 2776. Up to 331 conditions per place. [2022-09-20 22:47:54,961 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 51 selfloop transitions, 14 changer transitions 23/290 dead transitions. [2022-09-20 22:47:54,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 290 transitions, 1398 flow [2022-09-20 22:47:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-20 22:47:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-20 22:47:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3191 transitions. [2022-09-20 22:47:54,964 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8441798941798941 [2022-09-20 22:47:54,964 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3191 transitions. [2022-09-20 22:47:54,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3191 transitions. [2022-09-20 22:47:54,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:54,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3191 transitions. [2022-09-20 22:47:54,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.73333333333332) internal successors, (3191), 15 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,974 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,974 INFO L175 Difference]: Start difference. First operand has 294 places, 258 transitions, 898 flow. Second operand 15 states and 3191 transitions. [2022-09-20 22:47:54,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 290 transitions, 1398 flow [2022-09-20 22:47:54,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 290 transitions, 1327 flow, removed 31 selfloop flow, removed 8 redundant places. [2022-09-20 22:47:54,985 INFO L231 Difference]: Finished difference. Result has 301 places, 262 transitions, 984 flow [2022-09-20 22:47:54,985 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=984, PETRI_PLACES=301, PETRI_TRANSITIONS=262} [2022-09-20 22:47:54,986 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 72 predicate places. [2022-09-20 22:47:54,986 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 262 transitions, 984 flow [2022-09-20 22:47:54,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:54,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:54,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:54,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 22:47:54,987 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:54,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:54,988 INFO L85 PathProgramCache]: Analyzing trace with hash 972141771, now seen corresponding path program 8 times [2022-09-20 22:47:54,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:54,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925225486] [2022-09-20 22:47:54,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:54,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:55,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:55,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:55,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925225486] [2022-09-20 22:47:55,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925225486] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:55,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:55,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:55,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209443373] [2022-09-20 22:47:55,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:55,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:55,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:55,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:55,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:55,075 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:55,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 262 transitions, 984 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:55,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:55,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:55,323 INFO L130 PetriNetUnfolder]: 147/1177 cut-off events. [2022-09-20 22:47:55,323 INFO L131 PetriNetUnfolder]: For 2206/2261 co-relation queries the response was YES. [2022-09-20 22:47:55,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2792 conditions, 1177 events. 147/1177 cut-off events. For 2206/2261 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7282 event pairs, 102 based on Foata normal form. 3/1106 useless extension candidates. Maximal degree in co-relation 2661. Up to 328 conditions per place. [2022-09-20 22:47:55,331 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 48 selfloop transitions, 4 changer transitions 26/280 dead transitions. [2022-09-20 22:47:55,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 280 transitions, 1279 flow [2022-09-20 22:47:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 22:47:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 22:47:55,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2975 transitions. [2022-09-20 22:47:55,334 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8432539682539683 [2022-09-20 22:47:55,334 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2975 transitions. [2022-09-20 22:47:55,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2975 transitions. [2022-09-20 22:47:55,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:55,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2975 transitions. [2022-09-20 22:47:55,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.5) internal successors, (2975), 14 states have internal predecessors, (2975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,340 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,341 INFO L175 Difference]: Start difference. First operand has 301 places, 262 transitions, 984 flow. Second operand 14 states and 2975 transitions. [2022-09-20 22:47:55,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 280 transitions, 1279 flow [2022-09-20 22:47:55,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 280 transitions, 1202 flow, removed 29 selfloop flow, removed 8 redundant places. [2022-09-20 22:47:55,352 INFO L231 Difference]: Finished difference. Result has 304 places, 251 transitions, 800 flow [2022-09-20 22:47:55,353 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=800, PETRI_PLACES=304, PETRI_TRANSITIONS=251} [2022-09-20 22:47:55,353 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 75 predicate places. [2022-09-20 22:47:55,353 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 251 transitions, 800 flow [2022-09-20 22:47:55,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:55,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:55,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 22:47:55,354 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:55,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:55,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1407664043, now seen corresponding path program 9 times [2022-09-20 22:47:55,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:55,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220429505] [2022-09-20 22:47:55,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:55,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:55,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:55,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220429505] [2022-09-20 22:47:55,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220429505] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:55,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:55,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:55,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225900216] [2022-09-20 22:47:55,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:55,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:55,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:55,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:55,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:55,464 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:55,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 251 transitions, 800 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:55,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:55,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:55,727 INFO L130 PetriNetUnfolder]: 146/1155 cut-off events. [2022-09-20 22:47:55,727 INFO L131 PetriNetUnfolder]: For 1804/1837 co-relation queries the response was YES. [2022-09-20 22:47:55,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 1155 events. 146/1155 cut-off events. For 1804/1837 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7076 event pairs, 102 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 2629. Up to 339 conditions per place. [2022-09-20 22:47:55,735 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 48 selfloop transitions, 10 changer transitions 26/286 dead transitions. [2022-09-20 22:47:55,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 286 transitions, 1278 flow [2022-09-20 22:47:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:47:55,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:47:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3401 transitions. [2022-09-20 22:47:55,738 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8435019841269841 [2022-09-20 22:47:55,738 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3401 transitions. [2022-09-20 22:47:55,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3401 transitions. [2022-09-20 22:47:55,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:55,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3401 transitions. [2022-09-20 22:47:55,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.5625) internal successors, (3401), 16 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,745 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,745 INFO L175 Difference]: Start difference. First operand has 304 places, 251 transitions, 800 flow. Second operand 16 states and 3401 transitions. [2022-09-20 22:47:55,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 286 transitions, 1278 flow [2022-09-20 22:47:55,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 286 transitions, 1180 flow, removed 26 selfloop flow, removed 16 redundant places. [2022-09-20 22:47:55,754 INFO L231 Difference]: Finished difference. Result has 295 places, 252 transitions, 826 flow [2022-09-20 22:47:55,755 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=826, PETRI_PLACES=295, PETRI_TRANSITIONS=252} [2022-09-20 22:47:55,755 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 66 predicate places. [2022-09-20 22:47:55,755 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 252 transitions, 826 flow [2022-09-20 22:47:55,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:55,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:55,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 22:47:55,756 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:55,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash -252637447, now seen corresponding path program 10 times [2022-09-20 22:47:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:55,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837414396] [2022-09-20 22:47:55,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:55,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:55,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:55,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:55,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837414396] [2022-09-20 22:47:55,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837414396] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:55,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:55,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:55,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489952926] [2022-09-20 22:47:55,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:55,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:55,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:55,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:55,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:55,835 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:55,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 252 transitions, 826 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:55,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:55,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:55,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:56,055 INFO L130 PetriNetUnfolder]: 140/1082 cut-off events. [2022-09-20 22:47:56,055 INFO L131 PetriNetUnfolder]: For 1377/1410 co-relation queries the response was YES. [2022-09-20 22:47:56,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2425 conditions, 1082 events. 140/1082 cut-off events. For 1377/1410 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 6382 event pairs, 101 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 2387. Up to 322 conditions per place. [2022-09-20 22:47:56,060 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 43 selfloop transitions, 2 changer transitions 28/273 dead transitions. [2022-09-20 22:47:56,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 273 transitions, 1096 flow [2022-09-20 22:47:56,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 22:47:56,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 22:47:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2976 transitions. [2022-09-20 22:47:56,063 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8435374149659864 [2022-09-20 22:47:56,063 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2976 transitions. [2022-09-20 22:47:56,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2976 transitions. [2022-09-20 22:47:56,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:56,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2976 transitions. [2022-09-20 22:47:56,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.57142857142858) internal successors, (2976), 14 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,070 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,070 INFO L175 Difference]: Start difference. First operand has 295 places, 252 transitions, 826 flow. Second operand 14 states and 2976 transitions. [2022-09-20 22:47:56,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 273 transitions, 1096 flow [2022-09-20 22:47:56,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 273 transitions, 1043 flow, removed 21 selfloop flow, removed 11 redundant places. [2022-09-20 22:47:56,078 INFO L231 Difference]: Finished difference. Result has 292 places, 239 transitions, 660 flow [2022-09-20 22:47:56,079 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=660, PETRI_PLACES=292, PETRI_TRANSITIONS=239} [2022-09-20 22:47:56,079 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 63 predicate places. [2022-09-20 22:47:56,080 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 239 transitions, 660 flow [2022-09-20 22:47:56,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:56,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:56,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-20 22:47:56,080 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:56,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:56,081 INFO L85 PathProgramCache]: Analyzing trace with hash -767051209, now seen corresponding path program 2 times [2022-09-20 22:47:56,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:56,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554112032] [2022-09-20 22:47:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:56,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:56,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:56,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554112032] [2022-09-20 22:47:56,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554112032] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:56,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:56,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:56,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098483093] [2022-09-20 22:47:56,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:56,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:56,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:56,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:56,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:56,197 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:56,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 239 transitions, 660 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:56,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:56,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:56,434 INFO L130 PetriNetUnfolder]: 156/1110 cut-off events. [2022-09-20 22:47:56,434 INFO L131 PetriNetUnfolder]: For 1071/1088 co-relation queries the response was YES. [2022-09-20 22:47:56,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2361 conditions, 1110 events. 156/1110 cut-off events. For 1071/1088 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 6563 event pairs, 102 based on Foata normal form. 1/1030 useless extension candidates. Maximal degree in co-relation 2327. Up to 321 conditions per place. [2022-09-20 22:47:56,441 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 50 selfloop transitions, 8 changer transitions 20/279 dead transitions. [2022-09-20 22:47:56,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 279 transitions, 999 flow [2022-09-20 22:47:56,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:47:56,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:47:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3400 transitions. [2022-09-20 22:47:56,444 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8432539682539683 [2022-09-20 22:47:56,444 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3400 transitions. [2022-09-20 22:47:56,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3400 transitions. [2022-09-20 22:47:56,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:56,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3400 transitions. [2022-09-20 22:47:56,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.5) internal successors, (3400), 16 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,452 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,452 INFO L175 Difference]: Start difference. First operand has 292 places, 239 transitions, 660 flow. Second operand 16 states and 3400 transitions. [2022-09-20 22:47:56,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 279 transitions, 999 flow [2022-09-20 22:47:56,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 279 transitions, 949 flow, removed 19 selfloop flow, removed 18 redundant places. [2022-09-20 22:47:56,459 INFO L231 Difference]: Finished difference. Result has 281 places, 246 transitions, 699 flow [2022-09-20 22:47:56,459 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=699, PETRI_PLACES=281, PETRI_TRANSITIONS=246} [2022-09-20 22:47:56,460 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 52 predicate places. [2022-09-20 22:47:56,460 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 246 transitions, 699 flow [2022-09-20 22:47:56,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:56,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:56,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-20 22:47:56,461 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:56,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:56,461 INFO L85 PathProgramCache]: Analyzing trace with hash -720342891, now seen corresponding path program 3 times [2022-09-20 22:47:56,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:56,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050509863] [2022-09-20 22:47:56,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:56,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:56,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:56,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050509863] [2022-09-20 22:47:56,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050509863] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:56,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:56,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:56,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190197582] [2022-09-20 22:47:56,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:56,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:56,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:56,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:56,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:56,545 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:56,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 246 transitions, 699 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:56,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:56,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:56,786 INFO L130 PetriNetUnfolder]: 166/1143 cut-off events. [2022-09-20 22:47:56,786 INFO L131 PetriNetUnfolder]: For 1357/1391 co-relation queries the response was YES. [2022-09-20 22:47:56,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2641 conditions, 1143 events. 166/1143 cut-off events. For 1357/1391 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6907 event pairs, 104 based on Foata normal form. 2/1068 useless extension candidates. Maximal degree in co-relation 2611. Up to 307 conditions per place. [2022-09-20 22:47:56,794 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 55 selfloop transitions, 12 changer transitions 20/288 dead transitions. [2022-09-20 22:47:56,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 288 transitions, 1174 flow [2022-09-20 22:47:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-20 22:47:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-20 22:47:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3192 transitions. [2022-09-20 22:47:56,797 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-09-20 22:47:56,797 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3192 transitions. [2022-09-20 22:47:56,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3192 transitions. [2022-09-20 22:47:56,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:56,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3192 transitions. [2022-09-20 22:47:56,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.8) internal successors, (3192), 15 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,805 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,805 INFO L175 Difference]: Start difference. First operand has 281 places, 246 transitions, 699 flow. Second operand 15 states and 3192 transitions. [2022-09-20 22:47:56,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 288 transitions, 1174 flow [2022-09-20 22:47:56,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 288 transitions, 1092 flow, removed 41 selfloop flow, removed 7 redundant places. [2022-09-20 22:47:56,812 INFO L231 Difference]: Finished difference. Result has 290 places, 253 transitions, 792 flow [2022-09-20 22:47:56,813 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=792, PETRI_PLACES=290, PETRI_TRANSITIONS=253} [2022-09-20 22:47:56,813 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 61 predicate places. [2022-09-20 22:47:56,813 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 253 transitions, 792 flow [2022-09-20 22:47:56,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:56,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:56,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-20 22:47:56,814 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:56,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:56,814 INFO L85 PathProgramCache]: Analyzing trace with hash 938239077, now seen corresponding path program 4 times [2022-09-20 22:47:56,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:56,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018279011] [2022-09-20 22:47:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:56,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:56,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:56,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:56,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018279011] [2022-09-20 22:47:56,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018279011] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:56,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:56,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:56,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474793095] [2022-09-20 22:47:56,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:56,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:56,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:56,891 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:56,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 253 transitions, 792 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:56,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:56,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:56,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:57,151 INFO L130 PetriNetUnfolder]: 162/1168 cut-off events. [2022-09-20 22:47:57,151 INFO L131 PetriNetUnfolder]: For 1950/1988 co-relation queries the response was YES. [2022-09-20 22:47:57,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2879 conditions, 1168 events. 162/1168 cut-off events. For 1950/1988 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7175 event pairs, 96 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 2843. Up to 273 conditions per place. [2022-09-20 22:47:57,158 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 87 selfloop transitions, 12 changer transitions 26/326 dead transitions. [2022-09-20 22:47:57,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 326 transitions, 1588 flow [2022-09-20 22:47:57,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 22:47:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 22:47:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3835 transitions. [2022-09-20 22:47:57,161 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8454585537918872 [2022-09-20 22:47:57,161 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3835 transitions. [2022-09-20 22:47:57,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3835 transitions. [2022-09-20 22:47:57,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:57,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3835 transitions. [2022-09-20 22:47:57,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 213.05555555555554) internal successors, (3835), 18 states have internal predecessors, (3835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,169 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 252.0) internal successors, (4788), 19 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,169 INFO L175 Difference]: Start difference. First operand has 290 places, 253 transitions, 792 flow. Second operand 18 states and 3835 transitions. [2022-09-20 22:47:57,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 326 transitions, 1588 flow [2022-09-20 22:47:57,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 326 transitions, 1524 flow, removed 32 selfloop flow, removed 6 redundant places. [2022-09-20 22:47:57,179 INFO L231 Difference]: Finished difference. Result has 307 places, 256 transitions, 880 flow [2022-09-20 22:47:57,179 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=880, PETRI_PLACES=307, PETRI_TRANSITIONS=256} [2022-09-20 22:47:57,180 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 78 predicate places. [2022-09-20 22:47:57,180 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 256 transitions, 880 flow [2022-09-20 22:47:57,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:57,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:57,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-20 22:47:57,181 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:57,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:57,181 INFO L85 PathProgramCache]: Analyzing trace with hash 91745811, now seen corresponding path program 5 times [2022-09-20 22:47:57,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:57,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896654428] [2022-09-20 22:47:57,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:57,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:57,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:57,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896654428] [2022-09-20 22:47:57,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896654428] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:57,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:57,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:57,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123541742] [2022-09-20 22:47:57,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:57,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:57,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:57,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:57,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:57,251 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:57,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 256 transitions, 880 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:57,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:57,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:57,502 INFO L130 PetriNetUnfolder]: 157/1172 cut-off events. [2022-09-20 22:47:57,502 INFO L131 PetriNetUnfolder]: For 2635/2664 co-relation queries the response was YES. [2022-09-20 22:47:57,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 1172 events. 157/1172 cut-off events. For 2635/2664 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7230 event pairs, 109 based on Foata normal form. 3/1092 useless extension candidates. Maximal degree in co-relation 3007. Up to 358 conditions per place. [2022-09-20 22:47:57,509 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 57 selfloop transitions, 14 changer transitions 15/287 dead transitions. [2022-09-20 22:47:57,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 287 transitions, 1353 flow [2022-09-20 22:47:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 22:47:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 22:47:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2977 transitions. [2022-09-20 22:47:57,513 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8438208616780045 [2022-09-20 22:47:57,513 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2977 transitions. [2022-09-20 22:47:57,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2977 transitions. [2022-09-20 22:47:57,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:57,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2977 transitions. [2022-09-20 22:47:57,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.64285714285714) internal successors, (2977), 14 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,520 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,520 INFO L175 Difference]: Start difference. First operand has 307 places, 256 transitions, 880 flow. Second operand 14 states and 2977 transitions. [2022-09-20 22:47:57,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 287 transitions, 1353 flow [2022-09-20 22:47:57,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 287 transitions, 1275 flow, removed 38 selfloop flow, removed 9 redundant places. [2022-09-20 22:47:57,541 INFO L231 Difference]: Finished difference. Result has 307 places, 263 transitions, 979 flow [2022-09-20 22:47:57,541 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=979, PETRI_PLACES=307, PETRI_TRANSITIONS=263} [2022-09-20 22:47:57,541 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 78 predicate places. [2022-09-20 22:47:57,541 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 263 transitions, 979 flow [2022-09-20 22:47:57,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:57,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:57,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-20 22:47:57,542 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:57,542 INFO L85 PathProgramCache]: Analyzing trace with hash 756656147, now seen corresponding path program 6 times [2022-09-20 22:47:57,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:57,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866819054] [2022-09-20 22:47:57,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:57,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:57,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:57,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:57,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866819054] [2022-09-20 22:47:57,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866819054] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:57,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:57,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:57,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690990844] [2022-09-20 22:47:57,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:57,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:57,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:57,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:57,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:57,618 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:57,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 263 transitions, 979 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:57,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:57,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:57,844 INFO L130 PetriNetUnfolder]: 149/1145 cut-off events. [2022-09-20 22:47:57,844 INFO L131 PetriNetUnfolder]: For 2371/2400 co-relation queries the response was YES. [2022-09-20 22:47:57,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2945 conditions, 1145 events. 149/1145 cut-off events. For 2371/2400 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6971 event pairs, 109 based on Foata normal form. 3/1065 useless extension candidates. Maximal degree in co-relation 2900. Up to 353 conditions per place. [2022-09-20 22:47:57,855 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 53 selfloop transitions, 4 changer transitions 24/282 dead transitions. [2022-09-20 22:47:57,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 282 transitions, 1322 flow [2022-09-20 22:47:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 22:47:57,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 22:47:57,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2974 transitions. [2022-09-20 22:47:57,858 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8429705215419501 [2022-09-20 22:47:57,858 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2974 transitions. [2022-09-20 22:47:57,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2974 transitions. [2022-09-20 22:47:57,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:57,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2974 transitions. [2022-09-20 22:47:57,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.42857142857142) internal successors, (2974), 14 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,880 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,880 INFO L175 Difference]: Start difference. First operand has 307 places, 263 transitions, 979 flow. Second operand 14 states and 2974 transitions. [2022-09-20 22:47:57,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 282 transitions, 1322 flow [2022-09-20 22:47:57,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 282 transitions, 1292 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-09-20 22:47:57,891 INFO L231 Difference]: Finished difference. Result has 313 places, 251 transitions, 819 flow [2022-09-20 22:47:57,891 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=819, PETRI_PLACES=313, PETRI_TRANSITIONS=251} [2022-09-20 22:47:57,891 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 84 predicate places. [2022-09-20 22:47:57,892 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 251 transitions, 819 flow [2022-09-20 22:47:57,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:57,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:57,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-20 22:47:57,892 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:57,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:57,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1390512693, now seen corresponding path program 7 times [2022-09-20 22:47:57,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:57,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045585789] [2022-09-20 22:47:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:57,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:57,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:57,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:57,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045585789] [2022-09-20 22:47:57,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045585789] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:57,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:57,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:57,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187760976] [2022-09-20 22:47:57,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:57,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:57,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:57,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:57,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:57,962 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:57,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 251 transitions, 819 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:57,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:57,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:57,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:58,241 INFO L130 PetriNetUnfolder]: 153/1138 cut-off events. [2022-09-20 22:47:58,242 INFO L131 PetriNetUnfolder]: For 2523/2550 co-relation queries the response was YES. [2022-09-20 22:47:58,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 1138 events. 153/1138 cut-off events. For 2523/2550 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6868 event pairs, 103 based on Foata normal form. 2/1063 useless extension candidates. Maximal degree in co-relation 2907. Up to 320 conditions per place. [2022-09-20 22:47:58,249 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 53 selfloop transitions, 16 changer transitions 18/288 dead transitions. [2022-09-20 22:47:58,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 288 transitions, 1356 flow [2022-09-20 22:47:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 22:47:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 22:47:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3397 transitions. [2022-09-20 22:47:58,252 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8425099206349206 [2022-09-20 22:47:58,252 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3397 transitions. [2022-09-20 22:47:58,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3397 transitions. [2022-09-20 22:47:58,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:58,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3397 transitions. [2022-09-20 22:47:58,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 212.3125) internal successors, (3397), 16 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,259 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 252.0) internal successors, (4284), 17 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,259 INFO L175 Difference]: Start difference. First operand has 313 places, 251 transitions, 819 flow. Second operand 16 states and 3397 transitions. [2022-09-20 22:47:58,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 288 transitions, 1356 flow [2022-09-20 22:47:58,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 288 transitions, 1288 flow, removed 21 selfloop flow, removed 13 redundant places. [2022-09-20 22:47:58,269 INFO L231 Difference]: Finished difference. Result has 306 places, 260 transitions, 977 flow [2022-09-20 22:47:58,270 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=977, PETRI_PLACES=306, PETRI_TRANSITIONS=260} [2022-09-20 22:47:58,270 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 77 predicate places. [2022-09-20 22:47:58,270 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 260 transitions, 977 flow [2022-09-20 22:47:58,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:58,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:58,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-20 22:47:58,271 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:58,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:58,271 INFO L85 PathProgramCache]: Analyzing trace with hash 312621475, now seen corresponding path program 8 times [2022-09-20 22:47:58,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:58,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424031872] [2022-09-20 22:47:58,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:58,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:58,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:58,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424031872] [2022-09-20 22:47:58,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424031872] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:58,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:58,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:58,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724926758] [2022-09-20 22:47:58,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:58,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:58,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:58,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:58,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:58,344 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:58,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 260 transitions, 977 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:58,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:58,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:58,585 INFO L130 PetriNetUnfolder]: 149/1121 cut-off events. [2022-09-20 22:47:58,585 INFO L131 PetriNetUnfolder]: For 2200/2227 co-relation queries the response was YES. [2022-09-20 22:47:58,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2896 conditions, 1121 events. 149/1121 cut-off events. For 2200/2227 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6676 event pairs, 101 based on Foata normal form. 2/1044 useless extension candidates. Maximal degree in co-relation 2852. Up to 317 conditions per place. [2022-09-20 22:47:58,590 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 50 selfloop transitions, 17 changer transitions 18/286 dead transitions. [2022-09-20 22:47:58,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 286 transitions, 1426 flow [2022-09-20 22:47:58,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-20 22:47:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-20 22:47:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3189 transitions. [2022-09-20 22:47:58,593 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8436507936507937 [2022-09-20 22:47:58,593 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3189 transitions. [2022-09-20 22:47:58,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3189 transitions. [2022-09-20 22:47:58,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:58,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3189 transitions. [2022-09-20 22:47:58,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 212.6) internal successors, (3189), 15 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,599 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 252.0) internal successors, (4032), 16 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,599 INFO L175 Difference]: Start difference. First operand has 306 places, 260 transitions, 977 flow. Second operand 15 states and 3189 transitions. [2022-09-20 22:47:58,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 286 transitions, 1426 flow [2022-09-20 22:47:58,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 286 transitions, 1384 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-09-20 22:47:58,610 INFO L231 Difference]: Finished difference. Result has 316 places, 263 transitions, 1070 flow [2022-09-20 22:47:58,611 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1070, PETRI_PLACES=316, PETRI_TRANSITIONS=263} [2022-09-20 22:47:58,611 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 87 predicate places. [2022-09-20 22:47:58,611 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 263 transitions, 1070 flow [2022-09-20 22:47:58,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:58,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:58,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-20 22:47:58,612 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:58,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:58,612 INFO L85 PathProgramCache]: Analyzing trace with hash 33109533, now seen corresponding path program 9 times [2022-09-20 22:47:58,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:58,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494531807] [2022-09-20 22:47:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:58,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:58,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:58,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494531807] [2022-09-20 22:47:58,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494531807] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:58,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:58,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:58,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329341052] [2022-09-20 22:47:58,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:58,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:58,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:58,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:58,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:58,675 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:58,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 263 transitions, 1070 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:58,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:58,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:58,908 INFO L130 PetriNetUnfolder]: 145/1113 cut-off events. [2022-09-20 22:47:58,908 INFO L131 PetriNetUnfolder]: For 2344/2371 co-relation queries the response was YES. [2022-09-20 22:47:58,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2891 conditions, 1113 events. 145/1113 cut-off events. For 2344/2371 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6631 event pairs, 101 based on Foata normal form. 2/1036 useless extension candidates. Maximal degree in co-relation 2842. Up to 316 conditions per place. [2022-09-20 22:47:58,915 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 54 selfloop transitions, 8 changer transitions 23/286 dead transitions. [2022-09-20 22:47:58,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 286 transitions, 1408 flow [2022-09-20 22:47:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:47:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:47:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2768 transitions. [2022-09-20 22:47:58,918 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8449328449328449 [2022-09-20 22:47:58,918 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2768 transitions. [2022-09-20 22:47:58,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2768 transitions. [2022-09-20 22:47:58,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:58,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2768 transitions. [2022-09-20 22:47:58,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 212.92307692307693) internal successors, (2768), 13 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,930 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 252.0) internal successors, (3528), 14 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,930 INFO L175 Difference]: Start difference. First operand has 316 places, 263 transitions, 1070 flow. Second operand 13 states and 2768 transitions. [2022-09-20 22:47:58,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 286 transitions, 1408 flow [2022-09-20 22:47:58,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 286 transitions, 1338 flow, removed 22 selfloop flow, removed 7 redundant places. [2022-09-20 22:47:58,942 INFO L231 Difference]: Finished difference. Result has 319 places, 255 transitions, 905 flow [2022-09-20 22:47:58,942 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=905, PETRI_PLACES=319, PETRI_TRANSITIONS=255} [2022-09-20 22:47:58,942 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 90 predicate places. [2022-09-20 22:47:58,942 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 255 transitions, 905 flow [2022-09-20 22:47:58,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:58,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:58,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:58,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-20 22:47:58,944 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:58,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:58,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1897834875, now seen corresponding path program 10 times [2022-09-20 22:47:58,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:58,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708769295] [2022-09-20 22:47:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:58,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:59,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:59,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708769295] [2022-09-20 22:47:59,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708769295] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:59,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:59,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 22:47:59,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607727500] [2022-09-20 22:47:59,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:59,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 22:47:59,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:59,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 22:47:59,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-09-20 22:47:59,015 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 252 [2022-09-20 22:47:59,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 255 transitions, 905 flow. Second operand has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:59,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 252 [2022-09-20 22:47:59,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:59,302 INFO L130 PetriNetUnfolder]: 138/1044 cut-off events. [2022-09-20 22:47:59,302 INFO L131 PetriNetUnfolder]: For 1992/2019 co-relation queries the response was YES. [2022-09-20 22:47:59,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 1044 events. 138/1044 cut-off events. For 1992/2019 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5994 event pairs, 99 based on Foata normal form. 2/969 useless extension candidates. Maximal degree in co-relation 2590. Up to 298 conditions per place. [2022-09-20 22:47:59,308 INFO L137 encePairwiseOnDemand]: 241/252 looper letters, 45 selfloop transitions, 2 changer transitions 26/272 dead transitions. [2022-09-20 22:47:59,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 272 transitions, 1171 flow [2022-09-20 22:47:59,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 22:47:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 22:47:59,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2974 transitions. [2022-09-20 22:47:59,310 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8429705215419501 [2022-09-20 22:47:59,311 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2974 transitions. [2022-09-20 22:47:59,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2974 transitions. [2022-09-20 22:47:59,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:59,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2974 transitions. [2022-09-20 22:47:59,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 212.42857142857142) internal successors, (2974), 14 states have internal predecessors, (2974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,315 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 252.0) internal successors, (3780), 15 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,315 INFO L175 Difference]: Start difference. First operand has 319 places, 255 transitions, 905 flow. Second operand 14 states and 2974 transitions. [2022-09-20 22:47:59,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 272 transitions, 1171 flow [2022-09-20 22:47:59,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 272 transitions, 1096 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-09-20 22:47:59,326 INFO L231 Difference]: Finished difference. Result has 309 places, 242 transitions, 712 flow [2022-09-20 22:47:59,326 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=712, PETRI_PLACES=309, PETRI_TRANSITIONS=242} [2022-09-20 22:47:59,327 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 80 predicate places. [2022-09-20 22:47:59,327 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 242 transitions, 712 flow [2022-09-20 22:47:59,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 210.88888888888889) internal successors, (1898), 9 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:59,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:59,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-20 22:47:59,327 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:59,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1198053439, now seen corresponding path program 1 times [2022-09-20 22:47:59,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:59,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230547741] [2022-09-20 22:47:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:59,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:59,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:59,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230547741] [2022-09-20 22:47:59,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230547741] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:59,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:59,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:47:59,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090719901] [2022-09-20 22:47:59,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:59,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:47:59,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:59,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:47:59,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:47:59,360 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-09-20 22:47:59,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 242 transitions, 712 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:59,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-09-20 22:47:59,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:59,426 INFO L130 PetriNetUnfolder]: 42/591 cut-off events. [2022-09-20 22:47:59,426 INFO L131 PetriNetUnfolder]: For 656/676 co-relation queries the response was YES. [2022-09-20 22:47:59,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 591 events. 42/591 cut-off events. For 656/676 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2497 event pairs, 23 based on Foata normal form. 3/560 useless extension candidates. Maximal degree in co-relation 1136. Up to 43 conditions per place. [2022-09-20 22:47:59,430 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 16 selfloop transitions, 2 changer transitions 12/246 dead transitions. [2022-09-20 22:47:59,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 246 transitions, 771 flow [2022-09-20 22:47:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:47:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:47:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2022-09-20 22:47:59,431 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2022-09-20 22:47:59,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2022-09-20 22:47:59,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2022-09-20 22:47:59,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:59,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2022-09-20 22:47:59,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,432 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,432 INFO L175 Difference]: Start difference. First operand has 309 places, 242 transitions, 712 flow. Second operand 3 states and 696 transitions. [2022-09-20 22:47:59,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 246 transitions, 771 flow [2022-09-20 22:47:59,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 246 transitions, 701 flow, removed 23 selfloop flow, removed 22 redundant places. [2022-09-20 22:47:59,437 INFO L231 Difference]: Finished difference. Result has 271 places, 232 transitions, 596 flow [2022-09-20 22:47:59,438 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=596, PETRI_PLACES=271, PETRI_TRANSITIONS=232} [2022-09-20 22:47:59,438 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 42 predicate places. [2022-09-20 22:47:59,438 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 232 transitions, 596 flow [2022-09-20 22:47:59,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:59,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:59,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-20 22:47:59,438 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:59,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:59,439 INFO L85 PathProgramCache]: Analyzing trace with hash 303819845, now seen corresponding path program 1 times [2022-09-20 22:47:59,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:59,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238383724] [2022-09-20 22:47:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:59,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:59,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:59,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:59,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238383724] [2022-09-20 22:47:59,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238383724] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:59,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:59,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 22:47:59,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231351767] [2022-09-20 22:47:59,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:59,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:47:59,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:59,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:47:59,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:47:59,468 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 252 [2022-09-20 22:47:59,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 232 transitions, 596 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,468 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:59,468 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 252 [2022-09-20 22:47:59,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:47:59,506 INFO L130 PetriNetUnfolder]: 27/350 cut-off events. [2022-09-20 22:47:59,506 INFO L131 PetriNetUnfolder]: For 199/199 co-relation queries the response was YES. [2022-09-20 22:47:59,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 350 events. 27/350 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 860 event pairs, 9 based on Foata normal form. 4/331 useless extension candidates. Maximal degree in co-relation 561. Up to 23 conditions per place. [2022-09-20 22:47:59,508 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 16 selfloop transitions, 2 changer transitions 11/236 dead transitions. [2022-09-20 22:47:59,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 236 transitions, 655 flow [2022-09-20 22:47:59,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:47:59,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:47:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2022-09-20 22:47:59,509 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2022-09-20 22:47:59,509 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2022-09-20 22:47:59,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2022-09-20 22:47:59,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:47:59,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2022-09-20 22:47:59,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,510 INFO L175 Difference]: Start difference. First operand has 271 places, 232 transitions, 596 flow. Second operand 3 states and 693 transitions. [2022-09-20 22:47:59,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 236 transitions, 655 flow [2022-09-20 22:47:59,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 236 transitions, 613 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-09-20 22:47:59,514 INFO L231 Difference]: Finished difference. Result has 253 places, 223 transitions, 512 flow [2022-09-20 22:47:59,514 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=253, PETRI_TRANSITIONS=223} [2022-09-20 22:47:59,515 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 24 predicate places. [2022-09-20 22:47:59,515 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 223 transitions, 512 flow [2022-09-20 22:47:59,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:47:59,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:47:59,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-20 22:47:59,515 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:47:59,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:47:59,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1142723415, now seen corresponding path program 1 times [2022-09-20 22:47:59,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:47:59,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493433562] [2022-09-20 22:47:59,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:47:59,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:47:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:47:59,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:47:59,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:47:59,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493433562] [2022-09-20 22:47:59,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493433562] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:47:59,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:47:59,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 22:47:59,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284918889] [2022-09-20 22:47:59,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:47:59,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 22:47:59,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:47:59,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 22:47:59,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-09-20 22:47:59,816 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-09-20 22:47:59,818 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 223 transitions, 512 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:47:59,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:47:59,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-09-20 22:47:59,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:02,740 INFO L130 PetriNetUnfolder]: 966/4404 cut-off events. [2022-09-20 22:48:02,740 INFO L131 PetriNetUnfolder]: For 1145/1154 co-relation queries the response was YES. [2022-09-20 22:48:02,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7463 conditions, 4404 events. 966/4404 cut-off events. For 1145/1154 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 35262 event pairs, 95 based on Foata normal form. 0/4111 useless extension candidates. Maximal degree in co-relation 7442. Up to 291 conditions per place. [2022-09-20 22:48:02,757 INFO L137 encePairwiseOnDemand]: 216/252 looper letters, 569 selfloop transitions, 68 changer transitions 0/792 dead transitions. [2022-09-20 22:48:02,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 792 transitions, 2964 flow [2022-09-20 22:48:02,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-09-20 22:48:02,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-09-20 22:48:02,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 9755 transitions. [2022-09-20 22:48:02,763 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7303833483078767 [2022-09-20 22:48:02,763 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 9755 transitions. [2022-09-20 22:48:02,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 9755 transitions. [2022-09-20 22:48:02,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:02,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 9755 transitions. [2022-09-20 22:48:02,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 184.0566037735849) internal successors, (9755), 53 states have internal predecessors, (9755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:02,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:02,778 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:02,778 INFO L175 Difference]: Start difference. First operand has 253 places, 223 transitions, 512 flow. Second operand 53 states and 9755 transitions. [2022-09-20 22:48:02,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 792 transitions, 2964 flow [2022-09-20 22:48:02,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 792 transitions, 2940 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-09-20 22:48:02,791 INFO L231 Difference]: Finished difference. Result has 302 places, 274 transitions, 798 flow [2022-09-20 22:48:02,791 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=798, PETRI_PLACES=302, PETRI_TRANSITIONS=274} [2022-09-20 22:48:02,791 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 73 predicate places. [2022-09-20 22:48:02,791 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 274 transitions, 798 flow [2022-09-20 22:48:02,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:02,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:02,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:02,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-20 22:48:02,792 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:48:02,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1117457277, now seen corresponding path program 2 times [2022-09-20 22:48:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:02,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000920821] [2022-09-20 22:48:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:03,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:03,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000920821] [2022-09-20 22:48:03,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000920821] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:03,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:03,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 22:48:03,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128830269] [2022-09-20 22:48:03,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:03,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 22:48:03,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:03,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 22:48:03,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-09-20 22:48:03,103 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-09-20 22:48:03,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 274 transitions, 798 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:03,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:03,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-09-20 22:48:03,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:06,115 INFO L130 PetriNetUnfolder]: 1548/7515 cut-off events. [2022-09-20 22:48:06,116 INFO L131 PetriNetUnfolder]: For 2341/2364 co-relation queries the response was YES. [2022-09-20 22:48:06,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13989 conditions, 7515 events. 1548/7515 cut-off events. For 2341/2364 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 69082 event pairs, 818 based on Foata normal form. 1/7190 useless extension candidates. Maximal degree in co-relation 13958. Up to 1165 conditions per place. [2022-09-20 22:48:06,152 INFO L137 encePairwiseOnDemand]: 214/252 looper letters, 463 selfloop transitions, 87 changer transitions 0/705 dead transitions. [2022-09-20 22:48:06,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 705 transitions, 3340 flow [2022-09-20 22:48:06,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-09-20 22:48:06,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-09-20 22:48:06,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 8041 transitions. [2022-09-20 22:48:06,159 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7251984126984127 [2022-09-20 22:48:06,160 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 8041 transitions. [2022-09-20 22:48:06,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 8041 transitions. [2022-09-20 22:48:06,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:06,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 8041 transitions. [2022-09-20 22:48:06,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 182.75) internal successors, (8041), 44 states have internal predecessors, (8041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:06,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 252.0) internal successors, (11340), 45 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:06,176 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 252.0) internal successors, (11340), 45 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:06,176 INFO L175 Difference]: Start difference. First operand has 302 places, 274 transitions, 798 flow. Second operand 44 states and 8041 transitions. [2022-09-20 22:48:06,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 705 transitions, 3340 flow [2022-09-20 22:48:06,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 705 transitions, 3144 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-20 22:48:06,193 INFO L231 Difference]: Finished difference. Result has 375 places, 357 transitions, 1470 flow [2022-09-20 22:48:06,194 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1470, PETRI_PLACES=375, PETRI_TRANSITIONS=357} [2022-09-20 22:48:06,195 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 146 predicate places. [2022-09-20 22:48:06,195 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 357 transitions, 1470 flow [2022-09-20 22:48:06,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:06,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:06,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:06,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-20 22:48:06,196 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:48:06,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:06,196 INFO L85 PathProgramCache]: Analyzing trace with hash 471229023, now seen corresponding path program 3 times [2022-09-20 22:48:06,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:06,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198639029] [2022-09-20 22:48:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:06,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:06,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:06,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198639029] [2022-09-20 22:48:06,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198639029] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:06,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:06,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 22:48:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939687252] [2022-09-20 22:48:06,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:06,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 22:48:06,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 22:48:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-09-20 22:48:06,497 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-09-20 22:48:06,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 357 transitions, 1470 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:06,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:06,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-09-20 22:48:06,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:12,583 INFO L130 PetriNetUnfolder]: 2845/14618 cut-off events. [2022-09-20 22:48:12,584 INFO L131 PetriNetUnfolder]: For 14181/14280 co-relation queries the response was YES. [2022-09-20 22:48:12,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30626 conditions, 14618 events. 2845/14618 cut-off events. For 14181/14280 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 164520 event pairs, 403 based on Foata normal form. 15/14089 useless extension candidates. Maximal degree in co-relation 30555. Up to 1186 conditions per place. [2022-09-20 22:48:12,683 INFO L137 encePairwiseOnDemand]: 216/252 looper letters, 922 selfloop transitions, 201 changer transitions 0/1278 dead transitions. [2022-09-20 22:48:12,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 1278 transitions, 8312 flow [2022-09-20 22:48:12,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-09-20 22:48:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-09-20 22:48:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 14666 transitions. [2022-09-20 22:48:12,739 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7274801587301587 [2022-09-20 22:48:12,739 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 14666 transitions. [2022-09-20 22:48:12,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 14666 transitions. [2022-09-20 22:48:12,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:12,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 14666 transitions. [2022-09-20 22:48:12,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 183.325) internal successors, (14666), 80 states have internal predecessors, (14666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:12,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 252.0) internal successors, (20412), 81 states have internal predecessors, (20412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:12,762 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 252.0) internal successors, (20412), 81 states have internal predecessors, (20412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:12,763 INFO L175 Difference]: Start difference. First operand has 375 places, 357 transitions, 1470 flow. Second operand 80 states and 14666 transitions. [2022-09-20 22:48:12,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 1278 transitions, 8312 flow [2022-09-20 22:48:12,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 1278 transitions, 8076 flow, removed 118 selfloop flow, removed 0 redundant places. [2022-09-20 22:48:12,825 INFO L231 Difference]: Finished difference. Result has 509 places, 468 transitions, 2785 flow [2022-09-20 22:48:12,826 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=2785, PETRI_PLACES=509, PETRI_TRANSITIONS=468} [2022-09-20 22:48:12,826 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 280 predicate places. [2022-09-20 22:48:12,826 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 468 transitions, 2785 flow [2022-09-20 22:48:12,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:12,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:12,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:12,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-20 22:48:12,827 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:48:12,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:12,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1367546335, now seen corresponding path program 4 times [2022-09-20 22:48:12,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:12,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183817124] [2022-09-20 22:48:12,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:12,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:13,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:13,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183817124] [2022-09-20 22:48:13,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183817124] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:13,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:13,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 22:48:13,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447018029] [2022-09-20 22:48:13,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:13,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 22:48:13,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:13,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 22:48:13,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-09-20 22:48:13,142 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-09-20 22:48:13,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 468 transitions, 2785 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:13,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:13,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-09-20 22:48:13,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:20,290 INFO L130 PetriNetUnfolder]: 3105/16446 cut-off events. [2022-09-20 22:48:20,291 INFO L131 PetriNetUnfolder]: For 31424/31517 co-relation queries the response was YES. [2022-09-20 22:48:20,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38936 conditions, 16446 events. 3105/16446 cut-off events. For 31424/31517 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 191305 event pairs, 475 based on Foata normal form. 30/15896 useless extension candidates. Maximal degree in co-relation 38809. Up to 1253 conditions per place. [2022-09-20 22:48:20,470 INFO L137 encePairwiseOnDemand]: 214/252 looper letters, 819 selfloop transitions, 240 changer transitions 0/1214 dead transitions. [2022-09-20 22:48:20,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 1214 transitions, 9952 flow [2022-09-20 22:48:20,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-09-20 22:48:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2022-09-20 22:48:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 12945 transitions. [2022-09-20 22:48:20,477 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7235077129443327 [2022-09-20 22:48:20,477 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 12945 transitions. [2022-09-20 22:48:20,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 12945 transitions. [2022-09-20 22:48:20,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:20,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 12945 transitions. [2022-09-20 22:48:20,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 182.32394366197184) internal successors, (12945), 71 states have internal predecessors, (12945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:20,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 252.0) internal successors, (18144), 72 states have internal predecessors, (18144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:20,498 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 252.0) internal successors, (18144), 72 states have internal predecessors, (18144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:20,498 INFO L175 Difference]: Start difference. First operand has 509 places, 468 transitions, 2785 flow. Second operand 71 states and 12945 transitions. [2022-09-20 22:48:20,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 1214 transitions, 9952 flow [2022-09-20 22:48:20,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 1214 transitions, 8979 flow, removed 195 selfloop flow, removed 21 redundant places. [2022-09-20 22:48:20,696 INFO L231 Difference]: Finished difference. Result has 594 places, 598 transitions, 4297 flow [2022-09-20 22:48:20,696 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=4297, PETRI_PLACES=594, PETRI_TRANSITIONS=598} [2022-09-20 22:48:20,696 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 365 predicate places. [2022-09-20 22:48:20,696 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 598 transitions, 4297 flow [2022-09-20 22:48:20,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:20,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:20,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:20,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-09-20 22:48:20,697 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:48:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:20,697 INFO L85 PathProgramCache]: Analyzing trace with hash -510545487, now seen corresponding path program 5 times [2022-09-20 22:48:20,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:20,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747573996] [2022-09-20 22:48:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:20,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:20,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:20,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747573996] [2022-09-20 22:48:20,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747573996] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:20,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:20,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 22:48:20,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177151191] [2022-09-20 22:48:20,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:20,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 22:48:20,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:20,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 22:48:20,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-09-20 22:48:20,987 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-09-20 22:48:20,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 598 transitions, 4297 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:20,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:20,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-09-20 22:48:20,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:28,268 INFO L130 PetriNetUnfolder]: 3339/18295 cut-off events. [2022-09-20 22:48:28,269 INFO L131 PetriNetUnfolder]: For 53166/53365 co-relation queries the response was YES. [2022-09-20 22:48:28,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46836 conditions, 18295 events. 3339/18295 cut-off events. For 53166/53365 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 216571 event pairs, 1157 based on Foata normal form. 30/17604 useless extension candidates. Maximal degree in co-relation 46674. Up to 2949 conditions per place. [2022-09-20 22:48:28,528 INFO L137 encePairwiseOnDemand]: 216/252 looper letters, 867 selfloop transitions, 216 changer transitions 0/1238 dead transitions. [2022-09-20 22:48:28,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 1238 transitions, 12190 flow [2022-09-20 22:48:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-09-20 22:48:28,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-09-20 22:48:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 9759 transitions. [2022-09-20 22:48:28,535 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7306828391734053 [2022-09-20 22:48:28,535 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 9759 transitions. [2022-09-20 22:48:28,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 9759 transitions. [2022-09-20 22:48:28,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:28,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 9759 transitions. [2022-09-20 22:48:28,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 184.1320754716981) internal successors, (9759), 53 states have internal predecessors, (9759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:28,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:28,551 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 252.0) internal successors, (13608), 54 states have internal predecessors, (13608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:28,551 INFO L175 Difference]: Start difference. First operand has 594 places, 598 transitions, 4297 flow. Second operand 53 states and 9759 transitions. [2022-09-20 22:48:28,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 1238 transitions, 12190 flow [2022-09-20 22:48:28,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 1238 transitions, 10604 flow, removed 499 selfloop flow, removed 9 redundant places. [2022-09-20 22:48:28,977 INFO L231 Difference]: Finished difference. Result has 667 places, 646 transitions, 4734 flow [2022-09-20 22:48:28,978 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=3465, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4734, PETRI_PLACES=667, PETRI_TRANSITIONS=646} [2022-09-20 22:48:28,978 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 438 predicate places. [2022-09-20 22:48:28,978 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 646 transitions, 4734 flow [2022-09-20 22:48:28,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:28,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:28,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:28,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-09-20 22:48:28,979 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:48:28,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:28,980 INFO L85 PathProgramCache]: Analyzing trace with hash -563611055, now seen corresponding path program 6 times [2022-09-20 22:48:28,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:28,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727816866] [2022-09-20 22:48:28,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:28,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:29,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:29,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727816866] [2022-09-20 22:48:29,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727816866] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:29,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:29,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 22:48:29,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748999554] [2022-09-20 22:48:29,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:29,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 22:48:29,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:29,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 22:48:29,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-09-20 22:48:29,296 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-09-20 22:48:29,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 646 transitions, 4734 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:29,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:29,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-09-20 22:48:29,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:38,062 INFO L130 PetriNetUnfolder]: 3644/19989 cut-off events. [2022-09-20 22:48:38,062 INFO L131 PetriNetUnfolder]: For 68291/68511 co-relation queries the response was YES. [2022-09-20 22:48:38,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53006 conditions, 19989 events. 3644/19989 cut-off events. For 68291/68511 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 241214 event pairs, 2138 based on Foata normal form. 47/19276 useless extension candidates. Maximal degree in co-relation 52813. Up to 4054 conditions per place. [2022-09-20 22:48:38,418 INFO L137 encePairwiseOnDemand]: 214/252 looper letters, 751 selfloop transitions, 146 changer transitions 0/1052 dead transitions. [2022-09-20 22:48:38,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 1052 transitions, 10166 flow [2022-09-20 22:48:38,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-20 22:48:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-09-20 22:48:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 7873 transitions. [2022-09-20 22:48:38,423 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7265596160944998 [2022-09-20 22:48:38,423 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 7873 transitions. [2022-09-20 22:48:38,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 7873 transitions. [2022-09-20 22:48:38,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:38,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 7873 transitions. [2022-09-20 22:48:38,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 183.09302325581396) internal successors, (7873), 43 states have internal predecessors, (7873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:38,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 252.0) internal successors, (11088), 44 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:38,434 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 252.0) internal successors, (11088), 44 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:38,434 INFO L175 Difference]: Start difference. First operand has 667 places, 646 transitions, 4734 flow. Second operand 43 states and 7873 transitions. [2022-09-20 22:48:38,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 1052 transitions, 10166 flow [2022-09-20 22:48:38,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 1052 transitions, 9296 flow, removed 181 selfloop flow, removed 21 redundant places. [2022-09-20 22:48:38,881 INFO L231 Difference]: Finished difference. Result has 711 places, 700 transitions, 5276 flow [2022-09-20 22:48:38,881 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=4216, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5276, PETRI_PLACES=711, PETRI_TRANSITIONS=700} [2022-09-20 22:48:38,881 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 482 predicate places. [2022-09-20 22:48:38,881 INFO L495 AbstractCegarLoop]: Abstraction has has 711 places, 700 transitions, 5276 flow [2022-09-20 22:48:38,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:38,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:38,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:38,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-09-20 22:48:38,882 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:48:38,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:38,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1848306263, now seen corresponding path program 7 times [2022-09-20 22:48:38,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:38,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375971064] [2022-09-20 22:48:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:38,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:39,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:39,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375971064] [2022-09-20 22:48:39,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375971064] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:39,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:39,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 22:48:39,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969221832] [2022-09-20 22:48:39,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:39,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 22:48:39,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:39,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 22:48:39,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-09-20 22:48:39,185 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-09-20 22:48:39,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 700 transitions, 5276 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:39,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:39,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-09-20 22:48:39,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:48:53,050 INFO L130 PetriNetUnfolder]: 5120/28673 cut-off events. [2022-09-20 22:48:53,050 INFO L131 PetriNetUnfolder]: For 125368/125707 co-relation queries the response was YES. [2022-09-20 22:48:53,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78988 conditions, 28673 events. 5120/28673 cut-off events. For 125368/125707 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 376434 event pairs, 2617 based on Foata normal form. 44/27682 useless extension candidates. Maximal degree in co-relation 78772. Up to 4095 conditions per place. [2022-09-20 22:48:53,797 INFO L137 encePairwiseOnDemand]: 216/252 looper letters, 1092 selfloop transitions, 228 changer transitions 0/1475 dead transitions. [2022-09-20 22:48:53,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 774 places, 1475 transitions, 15843 flow [2022-09-20 22:48:53,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-09-20 22:48:53,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-09-20 22:48:53,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 11772 transitions. [2022-09-20 22:48:53,805 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7299107142857143 [2022-09-20 22:48:53,805 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 11772 transitions. [2022-09-20 22:48:53,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 11772 transitions. [2022-09-20 22:48:53,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:48:53,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 11772 transitions. [2022-09-20 22:48:53,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 183.9375) internal successors, (11772), 64 states have internal predecessors, (11772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:53,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 252.0) internal successors, (16380), 65 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:53,822 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 252.0) internal successors, (16380), 65 states have internal predecessors, (16380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:53,822 INFO L175 Difference]: Start difference. First operand has 711 places, 700 transitions, 5276 flow. Second operand 64 states and 11772 transitions. [2022-09-20 22:48:53,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 774 places, 1475 transitions, 15843 flow [2022-09-20 22:48:54,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 761 places, 1475 transitions, 15514 flow, removed 133 selfloop flow, removed 13 redundant places. [2022-09-20 22:48:54,924 INFO L231 Difference]: Finished difference. Result has 813 places, 849 transitions, 8248 flow [2022-09-20 22:48:54,924 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=4949, PETRI_DIFFERENCE_MINUEND_PLACES=698, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=8248, PETRI_PLACES=813, PETRI_TRANSITIONS=849} [2022-09-20 22:48:54,925 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 584 predicate places. [2022-09-20 22:48:54,925 INFO L495 AbstractCegarLoop]: Abstraction has has 813 places, 849 transitions, 8248 flow [2022-09-20 22:48:54,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:54,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:48:54,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:48:54,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-09-20 22:48:54,926 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:48:54,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:48:54,926 INFO L85 PathProgramCache]: Analyzing trace with hash -503408947, now seen corresponding path program 8 times [2022-09-20 22:48:54,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:48:54,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255168224] [2022-09-20 22:48:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:48:54,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:48:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:48:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:48:55,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:48:55,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255168224] [2022-09-20 22:48:55,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255168224] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:48:55,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:48:55,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 22:48:55,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252708272] [2022-09-20 22:48:55,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:48:55,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 22:48:55,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:48:55,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 22:48:55,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-09-20 22:48:55,236 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-09-20 22:48:55,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 849 transitions, 8248 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:48:55,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:48:55,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-09-20 22:48:55,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:14,143 INFO L130 PetriNetUnfolder]: 5927/33274 cut-off events. [2022-09-20 22:49:14,144 INFO L131 PetriNetUnfolder]: For 198398/198904 co-relation queries the response was YES. [2022-09-20 22:49:15,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98523 conditions, 33274 events. 5927/33274 cut-off events. For 198398/198904 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 450688 event pairs, 1682 based on Foata normal form. 90/32160 useless extension candidates. Maximal degree in co-relation 98254. Up to 4553 conditions per place. [2022-09-20 22:49:15,308 INFO L137 encePairwiseOnDemand]: 216/252 looper letters, 1129 selfloop transitions, 437 changer transitions 0/1721 dead transitions. [2022-09-20 22:49:15,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 891 places, 1721 transitions, 21530 flow [2022-09-20 22:49:15,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-09-20 22:49:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-09-20 22:49:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 14398 transitions. [2022-09-20 22:49:15,316 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.723226843480008 [2022-09-20 22:49:15,316 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 14398 transitions. [2022-09-20 22:49:15,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 14398 transitions. [2022-09-20 22:49:15,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:15,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 14398 transitions. [2022-09-20 22:49:15,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 182.25316455696202) internal successors, (14398), 79 states have internal predecessors, (14398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:15,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 252.0) internal successors, (20160), 80 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:15,337 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 252.0) internal successors, (20160), 80 states have internal predecessors, (20160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:15,337 INFO L175 Difference]: Start difference. First operand has 813 places, 849 transitions, 8248 flow. Second operand 79 states and 14398 transitions. [2022-09-20 22:49:15,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 891 places, 1721 transitions, 21530 flow [2022-09-20 22:49:17,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 1721 transitions, 19294 flow, removed 1118 selfloop flow, removed 0 redundant places. [2022-09-20 22:49:17,366 INFO L231 Difference]: Finished difference. Result has 954 places, 975 transitions, 10030 flow [2022-09-20 22:49:17,367 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=6716, PETRI_DIFFERENCE_MINUEND_PLACES=813, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=10030, PETRI_PLACES=954, PETRI_TRANSITIONS=975} [2022-09-20 22:49:17,367 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 725 predicate places. [2022-09-20 22:49:17,368 INFO L495 AbstractCegarLoop]: Abstraction has has 954 places, 975 transitions, 10030 flow [2022-09-20 22:49:17,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:17,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:17,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:17,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-09-20 22:49:17,368 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:49:17,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:17,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1546538789, now seen corresponding path program 9 times [2022-09-20 22:49:17,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:17,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433987058] [2022-09-20 22:49:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:17,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:17,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:17,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433987058] [2022-09-20 22:49:17,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433987058] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:17,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:17,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 22:49:17,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351755860] [2022-09-20 22:49:17,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:17,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 22:49:17,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:17,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 22:49:17,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-09-20 22:49:17,666 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-09-20 22:49:17,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 954 places, 975 transitions, 10030 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:17,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:17,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-09-20 22:49:17,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:49:38,495 INFO L130 PetriNetUnfolder]: 6469/36307 cut-off events. [2022-09-20 22:49:38,496 INFO L131 PetriNetUnfolder]: For 260523/261007 co-relation queries the response was YES. [2022-09-20 22:49:40,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112507 conditions, 36307 events. 6469/36307 cut-off events. For 260523/261007 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 496406 event pairs, 3665 based on Foata normal form. 74/35027 useless extension candidates. Maximal degree in co-relation 112174. Up to 7722 conditions per place. [2022-09-20 22:49:40,228 INFO L137 encePairwiseOnDemand]: 216/252 looper letters, 1012 selfloop transitions, 351 changer transitions 0/1518 dead transitions. [2022-09-20 22:49:40,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 998 places, 1518 transitions, 19608 flow [2022-09-20 22:49:40,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-09-20 22:49:40,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-09-20 22:49:40,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 8272 transitions. [2022-09-20 22:49:40,232 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7294532627865962 [2022-09-20 22:49:40,232 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 8272 transitions. [2022-09-20 22:49:40,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 8272 transitions. [2022-09-20 22:49:40,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:49:40,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 8272 transitions. [2022-09-20 22:49:40,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 183.82222222222222) internal successors, (8272), 45 states have internal predecessors, (8272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:40,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 252.0) internal successors, (11592), 46 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:40,244 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 252.0) internal successors, (11592), 46 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:40,244 INFO L175 Difference]: Start difference. First operand has 954 places, 975 transitions, 10030 flow. Second operand 45 states and 8272 transitions. [2022-09-20 22:49:40,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 998 places, 1518 transitions, 19608 flow [2022-09-20 22:49:42,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 989 places, 1518 transitions, 17612 flow, removed 631 selfloop flow, removed 9 redundant places. [2022-09-20 22:49:43,006 INFO L231 Difference]: Finished difference. Result has 1016 places, 1030 transitions, 10714 flow [2022-09-20 22:49:43,006 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=8419, PETRI_DIFFERENCE_MINUEND_PLACES=945, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=975, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=10714, PETRI_PLACES=1016, PETRI_TRANSITIONS=1030} [2022-09-20 22:49:43,007 INFO L287 CegarLoopForPetriNet]: 229 programPoint places, 787 predicate places. [2022-09-20 22:49:43,007 INFO L495 AbstractCegarLoop]: Abstraction has has 1016 places, 1030 transitions, 10714 flow [2022-09-20 22:49:43,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:43,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:49:43,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:49:43,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-09-20 22:49:43,008 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 22:49:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:49:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1650161807, now seen corresponding path program 10 times [2022-09-20 22:49:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:49:43,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127788892] [2022-09-20 22:49:43,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:49:43,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:49:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:49:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:49:43,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:49:43,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127788892] [2022-09-20 22:49:43,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127788892] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:49:43,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:49:43,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 22:49:43,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486119112] [2022-09-20 22:49:43,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:49:43,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 22:49:43,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:49:43,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 22:49:43,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2022-09-20 22:49:43,329 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 252 [2022-09-20 22:49:43,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1016 places, 1030 transitions, 10714 flow. Second operand has 27 states, 27 states have (on average 174.2962962962963) internal successors, (4706), 27 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:49:43,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:49:43,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 252 [2022-09-20 22:49:43,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand