/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:45:35,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:45:35,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:45:35,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:45:35,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:45:35,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:45:35,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:45:35,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:45:35,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:45:35,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:45:35,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:45:35,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:45:35,810 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:45:35,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:45:35,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:45:35,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:45:35,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:45:35,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:45:35,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:45:35,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:45:35,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:45:35,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:45:35,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:45:35,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:45:35,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:45:35,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:45:35,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:45:35,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:45:35,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:45:35,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:45:35,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:45:35,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:45:35,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:45:35,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:45:35,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:45:35,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:45:35,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:45:35,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:45:35,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:45:35,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:45:35,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:45:35,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 02:45:35,859 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:45:35,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:45:35,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:45:35,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:45:35,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:45:35,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:45:35,861 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:45:35,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:45:35,862 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:45:35,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:45:35,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:45:35,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:45:35,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:45:35,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:45:35,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:45:35,863 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:45:35,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:45:35,863 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:45:35,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:45:35,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:45:35,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:45:35,863 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:45:35,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:45:35,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:45:35,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:45:35,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:45:35,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:45:35,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:45:35,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:45:35,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:45:35,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:45:35,864 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:45:36,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:45:36,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:45:36,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:45:36,033 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:45:36,033 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:45:36,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-01-28 02:45:36,997 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:45:37,179 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:45:37,180 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-01-28 02:45:37,184 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbaf07f1e/a7188b1a3c8c4efcb64b5da9f5984de9/FLAG4c9db2b39 [2023-01-28 02:45:37,193 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbaf07f1e/a7188b1a3c8c4efcb64b5da9f5984de9 [2023-01-28 02:45:37,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:45:37,202 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:45:37,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:45:37,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:45:37,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:45:37,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45a9cc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37, skipping insertion in model container [2023-01-28 02:45:37,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:45:37,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:45:37,327 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-01-28 02:45:37,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:45:37,342 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:45:37,359 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-01-28 02:45:37,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:45:37,372 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:45:37,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37 WrapperNode [2023-01-28 02:45:37,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:45:37,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:45:37,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:45:37,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:45:37,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,408 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 431 [2023-01-28 02:45:37,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:45:37,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:45:37,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:45:37,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:45:37,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,434 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:45:37,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:45:37,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:45:37,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:45:37,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37" (1/1) ... [2023-01-28 02:45:37,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:45:37,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:45:37,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 02:45:37,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 02:45:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:45:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:45:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:45:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:45:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 02:45:37,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 02:45:37,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 02:45:37,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 02:45:37,513 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 02:45:37,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 02:45:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:45:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:45:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:45:37,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:45:37,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:45:37,517 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:45:37,623 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:45:37,625 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:45:38,125 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:45:38,138 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:45:38,138 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 02:45:38,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:45:38 BoogieIcfgContainer [2023-01-28 02:45:38,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:45:38,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:45:38,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:45:38,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:45:38,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:45:37" (1/3) ... [2023-01-28 02:45:38,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7174e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:45:38, skipping insertion in model container [2023-01-28 02:45:38,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:37" (2/3) ... [2023-01-28 02:45:38,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c7174e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:45:38, skipping insertion in model container [2023-01-28 02:45:38,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:45:38" (3/3) ... [2023-01-28 02:45:38,147 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-01-28 02:45:38,158 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:45:38,158 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:45:38,159 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:45:38,267 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 02:45:38,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 501 transitions, 1026 flow [2023-01-28 02:45:38,455 INFO L130 PetriNetUnfolder]: 41/498 cut-off events. [2023-01-28 02:45:38,455 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:45:38,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 41/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 643 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-01-28 02:45:38,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 470 places, 501 transitions, 1026 flow [2023-01-28 02:45:38,471 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 457 places, 488 transitions, 994 flow [2023-01-28 02:45:38,475 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:45:38,490 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 457 places, 488 transitions, 994 flow [2023-01-28 02:45:38,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 457 places, 488 transitions, 994 flow [2023-01-28 02:45:38,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 457 places, 488 transitions, 994 flow [2023-01-28 02:45:38,553 INFO L130 PetriNetUnfolder]: 41/488 cut-off events. [2023-01-28 02:45:38,553 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:45:38,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 488 events. 41/488 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 642 event pairs, 0 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-01-28 02:45:38,564 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-01-28 02:45:52,028 INFO L134 LiptonReduction]: Checked pairs total: 21051 [2023-01-28 02:45:52,028 INFO L136 LiptonReduction]: Total number of compositions: 563 [2023-01-28 02:45:52,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:45:52,045 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;@7398dd04, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:45:52,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 02:45:52,049 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2023-01-28 02:45:52,050 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:45:52,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:52,050 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] [2023-01-28 02:45:52,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:52,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:52,053 INFO L85 PathProgramCache]: Analyzing trace with hash 558250822, now seen corresponding path program 1 times [2023-01-28 02:45:52,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:52,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291902634] [2023-01-28 02:45:52,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:52,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:45:52,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:52,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291902634] [2023-01-28 02:45:52,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291902634] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:52,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:52,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 02:45:52,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599360722] [2023-01-28 02:45:52,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:52,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 02:45:52,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:52,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 02:45:52,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 02:45:52,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1064 [2023-01-28 02:45:52,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:52,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:52,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1064 [2023-01-28 02:45:52,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:52,386 INFO L130 PetriNetUnfolder]: 699/1048 cut-off events. [2023-01-28 02:45:52,386 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-01-28 02:45:52,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1048 events. 699/1048 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3691 event pairs, 557 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2016. Up to 1049 conditions per place. [2023-01-28 02:45:52,391 INFO L137 encePairwiseOnDemand]: 1063/1064 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-01-28 02:45:52,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 182 flow [2023-01-28 02:45:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 02:45:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 02:45:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 972 transitions. [2023-01-28 02:45:52,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567669172932331 [2023-01-28 02:45:52,408 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 972 transitions. [2023-01-28 02:45:52,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 972 transitions. [2023-01-28 02:45:52,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:52,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 972 transitions. [2023-01-28 02:45:52,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 486.0) internal successors, (972), 2 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:52,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 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) [2023-01-28 02:45:52,421 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 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) [2023-01-28 02:45:52,422 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 2 states and 972 transitions. [2023-01-28 02:45:52,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 182 flow [2023-01-28 02:45:52,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 02:45:52,426 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 88 flow [2023-01-28 02:45:52,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-01-28 02:45:52,429 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-01-28 02:45:52,429 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 88 flow [2023-01-28 02:45:52,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:52,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:52,430 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] [2023-01-28 02:45:52,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:45:52,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:52,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:52,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2005961306, now seen corresponding path program 1 times [2023-01-28 02:45:52,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:52,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069068963] [2023-01-28 02:45:52,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:52,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:45:52,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:52,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069068963] [2023-01-28 02:45:52,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069068963] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:52,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:52,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:45:52,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840013684] [2023-01-28 02:45:52,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:45:52,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:45:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:45:52,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1064 [2023-01-28 02:45:52,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:52,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:52,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1064 [2023-01-28 02:45:52,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:52,724 INFO L130 PetriNetUnfolder]: 789/1184 cut-off events. [2023-01-28 02:45:52,724 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-01-28 02:45:52,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1184 events. 789/1184 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4309 event pairs, 473 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2432. Up to 867 conditions per place. [2023-01-28 02:45:52,728 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-01-28 02:45:52,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 228 flow [2023-01-28 02:45:52,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:45:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:45:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1430 transitions. [2023-01-28 02:45:52,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44799498746867167 [2023-01-28 02:45:52,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1430 transitions. [2023-01-28 02:45:52,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1430 transitions. [2023-01-28 02:45:52,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:52,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1430 transitions. [2023-01-28 02:45:52,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.6666666666667) internal successors, (1430), 3 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:52,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:52,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:52,739 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 88 flow. Second operand 3 states and 1430 transitions. [2023-01-28 02:45:52,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 228 flow [2023-01-28 02:45:52,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 02:45:52,741 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 106 flow [2023-01-28 02:45:52,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-01-28 02:45:52,742 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-01-28 02:45:52,742 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 106 flow [2023-01-28 02:45:52,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:52,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:52,743 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] [2023-01-28 02:45:52,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 02:45:52,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:52,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:52,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2002543410, now seen corresponding path program 1 times [2023-01-28 02:45:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:52,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25932115] [2023-01-28 02:45:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:52,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:52,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:45:52,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:52,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25932115] [2023-01-28 02:45:52,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25932115] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:52,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:52,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 02:45:52,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037744719] [2023-01-28 02:45:52,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:52,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:45:52,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:52,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:45:52,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:45:52,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 1064 [2023-01-28 02:45:52,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 441.6666666666667) internal successors, (1325), 3 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:52,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:52,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 1064 [2023-01-28 02:45:52,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:53,022 INFO L130 PetriNetUnfolder]: 789/1185 cut-off events. [2023-01-28 02:45:53,023 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-01-28 02:45:53,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1185 events. 789/1185 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4292 event pairs, 641 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 2802. Up to 1185 conditions per place. [2023-01-28 02:45:53,027 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-01-28 02:45:53,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 194 flow [2023-01-28 02:45:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:45:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:45:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1339 transitions. [2023-01-28 02:45:53,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41948621553884713 [2023-01-28 02:45:53,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1339 transitions. [2023-01-28 02:45:53,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1339 transitions. [2023-01-28 02:45:53,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:53,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1339 transitions. [2023-01-28 02:45:53,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.3333333333333) internal successors, (1339), 3 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,038 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 106 flow. Second operand 3 states and 1339 transitions. [2023-01-28 02:45:53,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 194 flow [2023-01-28 02:45:53,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:53,041 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 112 flow [2023-01-28 02:45:53,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-01-28 02:45:53,042 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-01-28 02:45:53,042 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 112 flow [2023-01-28 02:45:53,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 441.6666666666667) internal successors, (1325), 3 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:53,043 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] [2023-01-28 02:45:53,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 02:45:53,043 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:53,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:53,043 INFO L85 PathProgramCache]: Analyzing trace with hash 283624533, now seen corresponding path program 1 times [2023-01-28 02:45:53,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:53,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733046353] [2023-01-28 02:45:53,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:53,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:53,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 02:45:53,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:53,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733046353] [2023-01-28 02:45:53,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733046353] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:53,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:53,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:45:53,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784124484] [2023-01-28 02:45:53,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:53,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:45:53,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:53,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:45:53,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:45:53,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 1064 [2023-01-28 02:45:53,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 427.5) internal successors, (1710), 4 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:53,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 1064 [2023-01-28 02:45:53,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:53,356 INFO L130 PetriNetUnfolder]: 789/1186 cut-off events. [2023-01-28 02:45:53,357 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-28 02:45:53,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1186 events. 789/1186 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 2671. Up to 1185 conditions per place. [2023-01-28 02:45:53,363 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 41 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-01-28 02:45:53,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 202 flow [2023-01-28 02:45:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:45:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:45:53,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1723 transitions. [2023-01-28 02:45:53,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40484022556390975 [2023-01-28 02:45:53,368 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1723 transitions. [2023-01-28 02:45:53,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1723 transitions. [2023-01-28 02:45:53,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:53,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1723 transitions. [2023-01-28 02:45:53,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,388 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 112 flow. Second operand 4 states and 1723 transitions. [2023-01-28 02:45:53,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 202 flow [2023-01-28 02:45:53,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 02:45:53,393 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 122 flow [2023-01-28 02:45:53,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-01-28 02:45:53,396 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-01-28 02:45:53,396 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 122 flow [2023-01-28 02:45:53,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.5) internal successors, (1710), 4 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:53,398 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] [2023-01-28 02:45:53,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 02:45:53,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:53,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:53,399 INFO L85 PathProgramCache]: Analyzing trace with hash 194249792, now seen corresponding path program 1 times [2023-01-28 02:45:53,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:53,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451971846] [2023-01-28 02:45:53,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:53,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:53,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:45:53,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:53,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451971846] [2023-01-28 02:45:53,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451971846] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:53,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:53,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:45:53,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008178300] [2023-01-28 02:45:53,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:53,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:45:53,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:53,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:45:53,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:45:53,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 1064 [2023-01-28 02:45:53,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:53,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 1064 [2023-01-28 02:45:53,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:53,753 INFO L130 PetriNetUnfolder]: 789/1187 cut-off events. [2023-01-28 02:45:53,753 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-01-28 02:45:53,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1187 events. 789/1187 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2677. Up to 1185 conditions per place. [2023-01-28 02:45:53,758 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-01-28 02:45:53,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 214 flow [2023-01-28 02:45:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:45:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:45:53,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1724 transitions. [2023-01-28 02:45:53,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050751879699248 [2023-01-28 02:45:53,763 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1724 transitions. [2023-01-28 02:45:53,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1724 transitions. [2023-01-28 02:45:53,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:53,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1724 transitions. [2023-01-28 02:45:53,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,777 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,777 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 122 flow. Second operand 4 states and 1724 transitions. [2023-01-28 02:45:53,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 214 flow [2023-01-28 02:45:53,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:53,780 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 134 flow [2023-01-28 02:45:53,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-01-28 02:45:53,781 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-01-28 02:45:53,781 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 134 flow [2023-01-28 02:45:53,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:53,782 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] [2023-01-28 02:45:53,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 02:45:53,782 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:53,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:53,783 INFO L85 PathProgramCache]: Analyzing trace with hash 917435877, now seen corresponding path program 1 times [2023-01-28 02:45:53,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:53,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747292394] [2023-01-28 02:45:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:53,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:45:53,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:53,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747292394] [2023-01-28 02:45:53,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747292394] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:53,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:53,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:45:53,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879447178] [2023-01-28 02:45:53,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:53,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:45:53,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:53,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:45:53,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:45:53,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-28 02:45:53,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:53,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:53,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-28 02:45:53,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:54,071 INFO L130 PetriNetUnfolder]: 789/1188 cut-off events. [2023-01-28 02:45:54,071 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-01-28 02:45:54,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1188 events. 789/1188 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2684. Up to 1187 conditions per place. [2023-01-28 02:45:54,075 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-01-28 02:45:54,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 228 flow [2023-01-28 02:45:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:45:54,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:45:54,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-28 02:45:54,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-28 02:45:54,079 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-28 02:45:54,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-28 02:45:54,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:54,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-28 02:45:54,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:54,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:54,086 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:54,086 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 134 flow. Second operand 4 states and 1735 transitions. [2023-01-28 02:45:54,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 228 flow [2023-01-28 02:45:54,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:54,088 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 144 flow [2023-01-28 02:45:54,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-01-28 02:45:54,089 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-01-28 02:45:54,089 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 144 flow [2023-01-28 02:45:54,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:54,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:54,090 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] [2023-01-28 02:45:54,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 02:45:54,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:54,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:54,090 INFO L85 PathProgramCache]: Analyzing trace with hash -230399429, now seen corresponding path program 1 times [2023-01-28 02:45:54,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:54,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554978792] [2023-01-28 02:45:54,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:54,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:54,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 02:45:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:54,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554978792] [2023-01-28 02:45:54,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554978792] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:45:54,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772894313] [2023-01-28 02:45:54,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:54,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:45:54,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:45:54,278 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:45:54,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 02:45:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:54,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 02:45:54,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:45:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 02:45:54,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:45:54,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772894313] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:54,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:45:54,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-01-28 02:45:54,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351519106] [2023-01-28 02:45:54,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:54,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:45:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:45:54,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:45:54,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-28 02:45:54,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:54,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:54,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-28 02:45:54,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:54,652 INFO L130 PetriNetUnfolder]: 789/1189 cut-off events. [2023-01-28 02:45:54,652 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-01-28 02:45:54,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1189 events. 789/1189 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2690. Up to 1188 conditions per place. [2023-01-28 02:45:54,657 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-01-28 02:45:54,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 240 flow [2023-01-28 02:45:54,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:45:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:45:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-28 02:45:54,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-28 02:45:54,660 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-28 02:45:54,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-28 02:45:54,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:54,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-28 02:45:54,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:54,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:54,710 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:54,710 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 144 flow. Second operand 4 states and 1735 transitions. [2023-01-28 02:45:54,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 240 flow [2023-01-28 02:45:54,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 234 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:54,712 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 152 flow [2023-01-28 02:45:54,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-01-28 02:45:54,712 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-01-28 02:45:54,713 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 152 flow [2023-01-28 02:45:54,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.25) internal successors, (1725), 4 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:54,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:54,713 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] [2023-01-28 02:45:54,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 02:45:54,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:45:54,918 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:54,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:54,919 INFO L85 PathProgramCache]: Analyzing trace with hash 131576679, now seen corresponding path program 1 times [2023-01-28 02:45:54,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:54,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870841447] [2023-01-28 02:45:54,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:54,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:55,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 02:45:55,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:55,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870841447] [2023-01-28 02:45:55,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870841447] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:55,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:55,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:45:55,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771896740] [2023-01-28 02:45:55,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:55,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:45:55,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:55,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:45:55,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:45:55,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-01-28 02:45:55,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 431.5) internal successors, (1726), 4 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:55,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:55,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-01-28 02:45:55,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:55,412 INFO L130 PetriNetUnfolder]: 789/1190 cut-off events. [2023-01-28 02:45:55,413 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-01-28 02:45:55,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1190 events. 789/1190 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4294 event pairs, 641 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2695. Up to 1189 conditions per place. [2023-01-28 02:45:55,419 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-01-28 02:45:55,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 250 flow [2023-01-28 02:45:55,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:45:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:45:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1735 transitions. [2023-01-28 02:45:55,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40765977443609025 [2023-01-28 02:45:55,424 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1735 transitions. [2023-01-28 02:45:55,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1735 transitions. [2023-01-28 02:45:55,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:55,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1735 transitions. [2023-01-28 02:45:55,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.75) internal successors, (1735), 4 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:55,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:55,433 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:55,433 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 152 flow. Second operand 4 states and 1735 transitions. [2023-01-28 02:45:55,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 250 flow [2023-01-28 02:45:55,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:55,435 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 160 flow [2023-01-28 02:45:55,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-01-28 02:45:55,436 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-01-28 02:45:55,436 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 160 flow [2023-01-28 02:45:55,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.5) internal successors, (1726), 4 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:55,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:55,437 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] [2023-01-28 02:45:55,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 02:45:55,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:55,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:55,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1404509908, now seen corresponding path program 1 times [2023-01-28 02:45:55,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:55,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362785973] [2023-01-28 02:45:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:55,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:57,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:57,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362785973] [2023-01-28 02:45:57,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362785973] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:57,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:57,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:45:57,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559341199] [2023-01-28 02:45:57,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:57,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:45:57,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:57,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:45:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:45:57,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 1064 [2023-01-28 02:45:57,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 160 flow. Second operand has 13 states, 13 states have (on average 365.6923076923077) internal successors, (4754), 13 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:57,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:57,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 1064 [2023-01-28 02:45:57,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:58,521 INFO L130 PetriNetUnfolder]: 2057/3162 cut-off events. [2023-01-28 02:45:58,521 INFO L131 PetriNetUnfolder]: For 303/303 co-relation queries the response was YES. [2023-01-28 02:45:58,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7206 conditions, 3162 events. 2057/3162 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15935 event pairs, 304 based on Foata normal form. 1/2883 useless extension candidates. Maximal degree in co-relation 7195. Up to 1011 conditions per place. [2023-01-28 02:45:58,534 INFO L137 encePairwiseOnDemand]: 1051/1064 looper letters, 149 selfloop transitions, 11 changer transitions 7/167 dead transitions. [2023-01-28 02:45:58,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 167 transitions, 817 flow [2023-01-28 02:45:58,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:45:58,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:45:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4511 transitions. [2023-01-28 02:45:58,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35330513784461154 [2023-01-28 02:45:58,542 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4511 transitions. [2023-01-28 02:45:58,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4511 transitions. [2023-01-28 02:45:58,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:58,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4511 transitions. [2023-01-28 02:45:58,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 375.9166666666667) internal successors, (4511), 12 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:58,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 1064.0) internal successors, (13832), 13 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:58,561 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 1064.0) internal successors, (13832), 13 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:58,561 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 160 flow. Second operand 12 states and 4511 transitions. [2023-01-28 02:45:58,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 167 transitions, 817 flow [2023-01-28 02:45:58,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 167 transitions, 811 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:58,571 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 216 flow [2023-01-28 02:45:58,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=216, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2023-01-28 02:45:58,572 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-01-28 02:45:58,572 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 216 flow [2023-01-28 02:45:58,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 365.6923076923077) internal successors, (4754), 13 states have internal predecessors, (4754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:45:58,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:58,574 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] [2023-01-28 02:45:58,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 02:45:58,574 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:58,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:58,574 INFO L85 PathProgramCache]: Analyzing trace with hash -2043930938, now seen corresponding path program 2 times [2023-01-28 02:45:58,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:58,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031754721] [2023-01-28 02:45:58,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:58,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:00,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:00,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031754721] [2023-01-28 02:46:00,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031754721] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:00,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:00,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:46:00,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564297570] [2023-01-28 02:46:00,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:00,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:46:00,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:46:00,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:46:00,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:46:00,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 216 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:00,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:00,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:46:00,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:01,674 INFO L130 PetriNetUnfolder]: 4081/6398 cut-off events. [2023-01-28 02:46:01,674 INFO L131 PetriNetUnfolder]: For 3403/3403 co-relation queries the response was YES. [2023-01-28 02:46:01,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16807 conditions, 6398 events. 4081/6398 cut-off events. For 3403/3403 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 38481 event pairs, 819 based on Foata normal form. 1/6398 useless extension candidates. Maximal degree in co-relation 16790. Up to 2803 conditions per place. [2023-01-28 02:46:01,711 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 134 selfloop transitions, 12 changer transitions 7/153 dead transitions. [2023-01-28 02:46:01,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 153 transitions, 837 flow [2023-01-28 02:46:01,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:46:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:46:01,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3616 transitions. [2023-01-28 02:46:01,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37761069340016706 [2023-01-28 02:46:01,722 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3616 transitions. [2023-01-28 02:46:01,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3616 transitions. [2023-01-28 02:46:01,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:01,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3616 transitions. [2023-01-28 02:46:01,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 401.77777777777777) internal successors, (3616), 9 states have internal predecessors, (3616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:01,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:01,743 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:01,743 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 216 flow. Second operand 9 states and 3616 transitions. [2023-01-28 02:46:01,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 153 transitions, 837 flow [2023-01-28 02:46:01,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 153 transitions, 804 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 02:46:01,783 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 307 flow [2023-01-28 02:46:01,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=307, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2023-01-28 02:46:01,783 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2023-01-28 02:46:01,783 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 307 flow [2023-01-28 02:46:01,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:01,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:01,785 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] [2023-01-28 02:46:01,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 02:46:01,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:01,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:01,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1268587720, now seen corresponding path program 3 times [2023-01-28 02:46:01,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:01,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476277325] [2023-01-28 02:46:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:01,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:03,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:03,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476277325] [2023-01-28 02:46:03,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476277325] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:03,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:03,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 02:46:03,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53120162] [2023-01-28 02:46:03,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:03,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 02:46:03,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:03,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 02:46:03,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-01-28 02:46:03,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 1064 [2023-01-28 02:46:03,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 307 flow. Second operand has 14 states, 14 states have (on average 354.5) internal successors, (4963), 14 states have internal predecessors, (4963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:03,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:03,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 1064 [2023-01-28 02:46:03,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:06,317 INFO L130 PetriNetUnfolder]: 5335/8834 cut-off events. [2023-01-28 02:46:06,317 INFO L131 PetriNetUnfolder]: For 10406/10406 co-relation queries the response was YES. [2023-01-28 02:46:06,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26166 conditions, 8834 events. 5335/8834 cut-off events. For 10406/10406 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 60337 event pairs, 1122 based on Foata normal form. 1/8834 useless extension candidates. Maximal degree in co-relation 26143. Up to 2974 conditions per place. [2023-01-28 02:46:06,374 INFO L137 encePairwiseOnDemand]: 1046/1064 looper letters, 172 selfloop transitions, 64 changer transitions 7/243 dead transitions. [2023-01-28 02:46:06,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 243 transitions, 1590 flow [2023-01-28 02:46:06,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 02:46:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 02:46:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 6525 transitions. [2023-01-28 02:46:06,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3406954887218045 [2023-01-28 02:46:06,385 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 6525 transitions. [2023-01-28 02:46:06,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 6525 transitions. [2023-01-28 02:46:06,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:06,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 6525 transitions. [2023-01-28 02:46:06,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 362.5) internal successors, (6525), 18 states have internal predecessors, (6525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:06,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:06,411 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:06,411 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 307 flow. Second operand 18 states and 6525 transitions. [2023-01-28 02:46:06,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 243 transitions, 1590 flow [2023-01-28 02:46:06,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 243 transitions, 1580 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 02:46:06,457 INFO L231 Difference]: Finished difference. Result has 103 places, 123 transitions, 934 flow [2023-01-28 02:46:06,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=934, PETRI_PLACES=103, PETRI_TRANSITIONS=123} [2023-01-28 02:46:06,458 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2023-01-28 02:46:06,458 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 123 transitions, 934 flow [2023-01-28 02:46:06,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 354.5) internal successors, (4963), 14 states have internal predecessors, (4963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:06,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:06,459 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] [2023-01-28 02:46:06,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 02:46:06,459 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:06,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:06,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1785788936, now seen corresponding path program 4 times [2023-01-28 02:46:06,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:06,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450417143] [2023-01-28 02:46:06,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:06,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:07,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:07,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450417143] [2023-01-28 02:46:07,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450417143] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:07,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:07,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:46:07,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020516436] [2023-01-28 02:46:07,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:07,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:46:07,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:07,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:46:07,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:46:07,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:46:07,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 123 transitions, 934 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:07,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:07,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:46:07,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:09,627 INFO L130 PetriNetUnfolder]: 5889/9930 cut-off events. [2023-01-28 02:46:09,628 INFO L131 PetriNetUnfolder]: For 28769/28769 co-relation queries the response was YES. [2023-01-28 02:46:09,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39219 conditions, 9930 events. 5889/9930 cut-off events. For 28769/28769 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 70810 event pairs, 1305 based on Foata normal form. 1/9930 useless extension candidates. Maximal degree in co-relation 39184. Up to 3953 conditions per place. [2023-01-28 02:46:09,682 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 274 selfloop transitions, 29 changer transitions 7/310 dead transitions. [2023-01-28 02:46:09,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 310 transitions, 2717 flow [2023-01-28 02:46:09,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:46:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:46:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3624 transitions. [2023-01-28 02:46:09,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37844611528822053 [2023-01-28 02:46:09,687 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3624 transitions. [2023-01-28 02:46:09,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3624 transitions. [2023-01-28 02:46:09,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:09,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3624 transitions. [2023-01-28 02:46:09,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.6666666666667) internal successors, (3624), 9 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:09,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:09,700 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:09,700 INFO L175 Difference]: Start difference. First operand has 103 places, 123 transitions, 934 flow. Second operand 9 states and 3624 transitions. [2023-01-28 02:46:09,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 310 transitions, 2717 flow [2023-01-28 02:46:09,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 310 transitions, 2638 flow, removed 37 selfloop flow, removed 4 redundant places. [2023-01-28 02:46:09,878 INFO L231 Difference]: Finished difference. Result has 113 places, 132 transitions, 1121 flow [2023-01-28 02:46:09,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1121, PETRI_PLACES=113, PETRI_TRANSITIONS=132} [2023-01-28 02:46:09,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 71 predicate places. [2023-01-28 02:46:09,879 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 132 transitions, 1121 flow [2023-01-28 02:46:09,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:09,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:09,880 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] [2023-01-28 02:46:09,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 02:46:09,880 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:09,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:09,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1312490772, now seen corresponding path program 5 times [2023-01-28 02:46:09,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:09,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100422926] [2023-01-28 02:46:09,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:09,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:10,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:11,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:11,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100422926] [2023-01-28 02:46:11,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100422926] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:11,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:11,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:46:11,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258864713] [2023-01-28 02:46:11,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:11,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:46:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:11,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:46:11,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:46:11,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 1064 [2023-01-28 02:46:11,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 132 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:11,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:11,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 1064 [2023-01-28 02:46:11,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:14,513 INFO L130 PetriNetUnfolder]: 6944/11873 cut-off events. [2023-01-28 02:46:14,513 INFO L131 PetriNetUnfolder]: For 44867/44867 co-relation queries the response was YES. [2023-01-28 02:46:14,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48976 conditions, 11873 events. 6944/11873 cut-off events. For 44867/44867 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 87849 event pairs, 1776 based on Foata normal form. 1/11873 useless extension candidates. Maximal degree in co-relation 48935. Up to 6148 conditions per place. [2023-01-28 02:46:14,574 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 230 selfloop transitions, 43 changer transitions 7/280 dead transitions. [2023-01-28 02:46:14,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 280 transitions, 2693 flow [2023-01-28 02:46:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:46:14,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:46:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3893 transitions. [2023-01-28 02:46:14,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36588345864661653 [2023-01-28 02:46:14,580 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3893 transitions. [2023-01-28 02:46:14,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3893 transitions. [2023-01-28 02:46:14,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:14,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3893 transitions. [2023-01-28 02:46:14,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 389.3) internal successors, (3893), 10 states have internal predecessors, (3893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:14,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:14,595 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:14,595 INFO L175 Difference]: Start difference. First operand has 113 places, 132 transitions, 1121 flow. Second operand 10 states and 3893 transitions. [2023-01-28 02:46:14,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 280 transitions, 2693 flow [2023-01-28 02:46:14,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 280 transitions, 2634 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:14,835 INFO L231 Difference]: Finished difference. Result has 127 places, 145 transitions, 1393 flow [2023-01-28 02:46:14,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1393, PETRI_PLACES=127, PETRI_TRANSITIONS=145} [2023-01-28 02:46:14,836 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-01-28 02:46:14,836 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 145 transitions, 1393 flow [2023-01-28 02:46:14,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:14,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:14,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:14,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 02:46:14,837 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:14,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:14,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1161360985, now seen corresponding path program 1 times [2023-01-28 02:46:14,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:14,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057321418] [2023-01-28 02:46:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:14,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:14,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:14,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057321418] [2023-01-28 02:46:14,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057321418] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:14,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:14,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:46:14,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599881470] [2023-01-28 02:46:14,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:14,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:46:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:14,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:46:14,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:46:14,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1064 [2023-01-28 02:46:14,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 145 transitions, 1393 flow. Second operand has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:14,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:14,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1064 [2023-01-28 02:46:14,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:16,980 INFO L130 PetriNetUnfolder]: 9347/16523 cut-off events. [2023-01-28 02:46:16,980 INFO L131 PetriNetUnfolder]: For 86663/86663 co-relation queries the response was YES. [2023-01-28 02:46:17,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70143 conditions, 16523 events. 9347/16523 cut-off events. For 86663/86663 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 135666 event pairs, 3438 based on Foata normal form. 248/16770 useless extension candidates. Maximal degree in co-relation 70095. Up to 8790 conditions per place. [2023-01-28 02:46:17,079 INFO L137 encePairwiseOnDemand]: 1058/1064 looper letters, 258 selfloop transitions, 24 changer transitions 0/282 dead transitions. [2023-01-28 02:46:17,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 282 transitions, 3368 flow [2023-01-28 02:46:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:46:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:46:17,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2176 transitions. [2023-01-28 02:46:17,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40902255639097745 [2023-01-28 02:46:17,082 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2176 transitions. [2023-01-28 02:46:17,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2176 transitions. [2023-01-28 02:46:17,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:17,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2176 transitions. [2023-01-28 02:46:17,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 435.2) internal successors, (2176), 5 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:17,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1064.0) internal successors, (6384), 6 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:17,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1064.0) internal successors, (6384), 6 states have internal predecessors, (6384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:17,089 INFO L175 Difference]: Start difference. First operand has 127 places, 145 transitions, 1393 flow. Second operand 5 states and 2176 transitions. [2023-01-28 02:46:17,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 282 transitions, 3368 flow [2023-01-28 02:46:17,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 282 transitions, 3274 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:17,580 INFO L231 Difference]: Finished difference. Result has 132 places, 159 transitions, 1617 flow [2023-01-28 02:46:17,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1617, PETRI_PLACES=132, PETRI_TRANSITIONS=159} [2023-01-28 02:46:17,581 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2023-01-28 02:46:17,581 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 159 transitions, 1617 flow [2023-01-28 02:46:17,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:17,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:17,581 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] [2023-01-28 02:46:17,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 02:46:17,582 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:17,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:17,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1918445084, now seen corresponding path program 6 times [2023-01-28 02:46:17,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:17,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760846278] [2023-01-28 02:46:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:17,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:18,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:18,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760846278] [2023-01-28 02:46:18,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760846278] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:18,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:18,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:46:18,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141025836] [2023-01-28 02:46:18,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:18,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:46:18,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:18,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:46:18,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:46:18,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 360 out of 1064 [2023-01-28 02:46:18,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 159 transitions, 1617 flow. Second operand has 13 states, 13 states have (on average 362.6923076923077) internal successors, (4715), 13 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:18,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:18,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 360 of 1064 [2023-01-28 02:46:19,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:23,524 INFO L130 PetriNetUnfolder]: 9370/16593 cut-off events. [2023-01-28 02:46:23,525 INFO L131 PetriNetUnfolder]: For 85888/85888 co-relation queries the response was YES. [2023-01-28 02:46:23,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75956 conditions, 16593 events. 9370/16593 cut-off events. For 85888/85888 co-relation queries the response was YES. Maximal size of possible extension queue 1119. Compared 136810 event pairs, 1154 based on Foata normal form. 1/16593 useless extension candidates. Maximal degree in co-relation 75906. Up to 5499 conditions per place. [2023-01-28 02:46:23,623 INFO L137 encePairwiseOnDemand]: 1049/1064 looper letters, 260 selfloop transitions, 130 changer transitions 7/397 dead transitions. [2023-01-28 02:46:23,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 397 transitions, 4114 flow [2023-01-28 02:46:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 02:46:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 02:46:23,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 6690 transitions. [2023-01-28 02:46:23,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3493107769423559 [2023-01-28 02:46:23,631 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 6690 transitions. [2023-01-28 02:46:23,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 6690 transitions. [2023-01-28 02:46:23,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:23,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 6690 transitions. [2023-01-28 02:46:23,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 371.6666666666667) internal successors, (6690), 18 states have internal predecessors, (6690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:23,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:23,651 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1064.0) internal successors, (20216), 19 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:23,651 INFO L175 Difference]: Start difference. First operand has 132 places, 159 transitions, 1617 flow. Second operand 18 states and 6690 transitions. [2023-01-28 02:46:23,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 397 transitions, 4114 flow [2023-01-28 02:46:24,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 397 transitions, 4110 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-28 02:46:24,241 INFO L231 Difference]: Finished difference. Result has 157 places, 222 transitions, 2668 flow [2023-01-28 02:46:24,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2668, PETRI_PLACES=157, PETRI_TRANSITIONS=222} [2023-01-28 02:46:24,242 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2023-01-28 02:46:24,242 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 222 transitions, 2668 flow [2023-01-28 02:46:24,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 362.6923076923077) internal successors, (4715), 13 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:24,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:24,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:24,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 02:46:24,243 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:24,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash -605776418, now seen corresponding path program 7 times [2023-01-28 02:46:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:24,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960371875] [2023-01-28 02:46:24,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:25,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:25,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960371875] [2023-01-28 02:46:25,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960371875] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:25,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:25,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:46:25,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642734707] [2023-01-28 02:46:25,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:25,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:46:25,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:25,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:46:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:46:25,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 1064 [2023-01-28 02:46:25,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 222 transitions, 2668 flow. Second operand has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:25,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:25,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 1064 [2023-01-28 02:46:25,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:28,592 INFO L130 PetriNetUnfolder]: 9569/17260 cut-off events. [2023-01-28 02:46:28,592 INFO L131 PetriNetUnfolder]: For 124559/124559 co-relation queries the response was YES. [2023-01-28 02:46:28,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86201 conditions, 17260 events. 9569/17260 cut-off events. For 124559/124559 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 146290 event pairs, 2246 based on Foata normal form. 1/17260 useless extension candidates. Maximal degree in co-relation 86142. Up to 6581 conditions per place. [2023-01-28 02:46:28,735 INFO L137 encePairwiseOnDemand]: 1052/1064 looper letters, 325 selfloop transitions, 99 changer transitions 8/432 dead transitions. [2023-01-28 02:46:28,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 432 transitions, 5698 flow [2023-01-28 02:46:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:46:28,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:46:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3905 transitions. [2023-01-28 02:46:28,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36701127819548873 [2023-01-28 02:46:28,739 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3905 transitions. [2023-01-28 02:46:28,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3905 transitions. [2023-01-28 02:46:28,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:28,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3905 transitions. [2023-01-28 02:46:28,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 390.5) internal successors, (3905), 10 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:28,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:28,751 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:28,751 INFO L175 Difference]: Start difference. First operand has 157 places, 222 transitions, 2668 flow. Second operand 10 states and 3905 transitions. [2023-01-28 02:46:28,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 432 transitions, 5698 flow [2023-01-28 02:46:29,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 432 transitions, 5582 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-01-28 02:46:29,898 INFO L231 Difference]: Finished difference. Result has 167 places, 267 transitions, 3618 flow [2023-01-28 02:46:29,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3618, PETRI_PLACES=167, PETRI_TRANSITIONS=267} [2023-01-28 02:46:29,899 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2023-01-28 02:46:29,899 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 267 transitions, 3618 flow [2023-01-28 02:46:29,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:29,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:29,900 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] [2023-01-28 02:46:29,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 02:46:29,900 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:29,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:29,900 INFO L85 PathProgramCache]: Analyzing trace with hash -948365568, now seen corresponding path program 8 times [2023-01-28 02:46:29,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:29,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756122625] [2023-01-28 02:46:29,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:29,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:31,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:31,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:31,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756122625] [2023-01-28 02:46:31,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756122625] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:31,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:31,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 02:46:31,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098435553] [2023-01-28 02:46:31,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:31,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 02:46:31,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:31,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 02:46:31,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-01-28 02:46:31,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 1064 [2023-01-28 02:46:31,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 267 transitions, 3618 flow. Second operand has 14 states, 14 states have (on average 354.5) internal successors, (4963), 14 states have internal predecessors, (4963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:31,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:31,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 1064 [2023-01-28 02:46:31,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:34,663 INFO L130 PetriNetUnfolder]: 9564/17247 cut-off events. [2023-01-28 02:46:34,664 INFO L131 PetriNetUnfolder]: For 152468/152468 co-relation queries the response was YES. [2023-01-28 02:46:34,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93023 conditions, 17247 events. 9564/17247 cut-off events. For 152468/152468 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 145908 event pairs, 3027 based on Foata normal form. 1/17247 useless extension candidates. Maximal degree in co-relation 92958. Up to 8681 conditions per place. [2023-01-28 02:46:34,817 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 317 selfloop transitions, 86 changer transitions 8/411 dead transitions. [2023-01-28 02:46:34,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 411 transitions, 5896 flow [2023-01-28 02:46:34,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 02:46:34,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 02:46:34,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4722 transitions. [2023-01-28 02:46:34,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3413823019086177 [2023-01-28 02:46:34,824 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4722 transitions. [2023-01-28 02:46:34,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4722 transitions. [2023-01-28 02:46:34,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:34,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4722 transitions. [2023-01-28 02:46:34,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 363.2307692307692) internal successors, (4722), 13 states have internal predecessors, (4722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:34,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 1064.0) internal successors, (14896), 14 states have internal predecessors, (14896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:34,835 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 1064.0) internal successors, (14896), 14 states have internal predecessors, (14896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:34,835 INFO L175 Difference]: Start difference. First operand has 167 places, 267 transitions, 3618 flow. Second operand 13 states and 4722 transitions. [2023-01-28 02:46:34,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 411 transitions, 5896 flow [2023-01-28 02:46:36,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 411 transitions, 5684 flow, removed 64 selfloop flow, removed 3 redundant places. [2023-01-28 02:46:36,083 INFO L231 Difference]: Finished difference. Result has 181 places, 289 transitions, 4154 flow [2023-01-28 02:46:36,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4154, PETRI_PLACES=181, PETRI_TRANSITIONS=289} [2023-01-28 02:46:36,084 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 139 predicate places. [2023-01-28 02:46:36,084 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 289 transitions, 4154 flow [2023-01-28 02:46:36,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 354.5) internal successors, (4963), 14 states have internal predecessors, (4963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:36,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:36,084 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] [2023-01-28 02:46:36,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 02:46:36,085 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:36,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:36,085 INFO L85 PathProgramCache]: Analyzing trace with hash -770924642, now seen corresponding path program 9 times [2023-01-28 02:46:36,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:36,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077534903] [2023-01-28 02:46:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:36,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:37,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:37,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077534903] [2023-01-28 02:46:37,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077534903] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:37,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:37,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:46:37,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522061505] [2023-01-28 02:46:37,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:37,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:46:37,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:37,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:46:37,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:46:37,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:46:37,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 289 transitions, 4154 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:37,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:37,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:46:37,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:41,248 INFO L130 PetriNetUnfolder]: 11008/19865 cut-off events. [2023-01-28 02:46:41,248 INFO L131 PetriNetUnfolder]: For 190407/190407 co-relation queries the response was YES. [2023-01-28 02:46:41,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108701 conditions, 19865 events. 11008/19865 cut-off events. For 190407/190407 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 171512 event pairs, 2564 based on Foata normal form. 1/19865 useless extension candidates. Maximal degree in co-relation 108631. Up to 9344 conditions per place. [2023-01-28 02:46:41,438 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 423 selfloop transitions, 78 changer transitions 7/508 dead transitions. [2023-01-28 02:46:41,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 508 transitions, 7584 flow [2023-01-28 02:46:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:46:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:46:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3631 transitions. [2023-01-28 02:46:41,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37917710944026733 [2023-01-28 02:46:41,441 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3631 transitions. [2023-01-28 02:46:41,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3631 transitions. [2023-01-28 02:46:41,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:41,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3631 transitions. [2023-01-28 02:46:41,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 403.44444444444446) internal successors, (3631), 9 states have internal predecessors, (3631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:41,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:41,449 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:41,449 INFO L175 Difference]: Start difference. First operand has 181 places, 289 transitions, 4154 flow. Second operand 9 states and 3631 transitions. [2023-01-28 02:46:41,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 508 transitions, 7584 flow [2023-01-28 02:46:43,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 508 transitions, 7380 flow, removed 26 selfloop flow, removed 7 redundant places. [2023-01-28 02:46:43,384 INFO L231 Difference]: Finished difference. Result has 187 places, 314 transitions, 4730 flow [2023-01-28 02:46:43,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4037, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4730, PETRI_PLACES=187, PETRI_TRANSITIONS=314} [2023-01-28 02:46:43,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 145 predicate places. [2023-01-28 02:46:43,385 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 314 transitions, 4730 flow [2023-01-28 02:46:43,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:43,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:43,386 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] [2023-01-28 02:46:43,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 02:46:43,386 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:43,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:43,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1701044426, now seen corresponding path program 10 times [2023-01-28 02:46:43,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:43,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244991115] [2023-01-28 02:46:43,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:43,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:44,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:44,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244991115] [2023-01-28 02:46:44,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244991115] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:44,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:44,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 02:46:44,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486120630] [2023-01-28 02:46:44,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:44,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:46:44,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:44,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:46:44,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:46:44,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 1064 [2023-01-28 02:46:44,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 314 transitions, 4730 flow. Second operand has 12 states, 12 states have (on average 373.9166666666667) internal successors, (4487), 12 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:44,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:44,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 1064 [2023-01-28 02:46:44,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:49,642 INFO L130 PetriNetUnfolder]: 12254/22399 cut-off events. [2023-01-28 02:46:49,643 INFO L131 PetriNetUnfolder]: For 212135/212135 co-relation queries the response was YES. [2023-01-28 02:46:49,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121963 conditions, 22399 events. 12254/22399 cut-off events. For 212135/212135 co-relation queries the response was YES. Maximal size of possible extension queue 1498. Compared 199758 event pairs, 2513 based on Foata normal form. 1/22399 useless extension candidates. Maximal degree in co-relation 121888. Up to 9772 conditions per place. [2023-01-28 02:46:49,896 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 429 selfloop transitions, 53 changer transitions 7/489 dead transitions. [2023-01-28 02:46:49,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 489 transitions, 7616 flow [2023-01-28 02:46:49,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:46:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:46:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4216 transitions. [2023-01-28 02:46:49,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36021872863978127 [2023-01-28 02:46:49,901 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4216 transitions. [2023-01-28 02:46:49,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4216 transitions. [2023-01-28 02:46:49,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:49,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4216 transitions. [2023-01-28 02:46:49,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 383.27272727272725) internal successors, (4216), 11 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:49,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:49,915 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:49,915 INFO L175 Difference]: Start difference. First operand has 187 places, 314 transitions, 4730 flow. Second operand 11 states and 4216 transitions. [2023-01-28 02:46:49,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 489 transitions, 7616 flow [2023-01-28 02:46:52,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 489 transitions, 7476 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-01-28 02:46:52,629 INFO L231 Difference]: Finished difference. Result has 199 places, 324 transitions, 4988 flow [2023-01-28 02:46:52,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4628, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4988, PETRI_PLACES=199, PETRI_TRANSITIONS=324} [2023-01-28 02:46:52,630 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2023-01-28 02:46:52,630 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 324 transitions, 4988 flow [2023-01-28 02:46:52,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 373.9166666666667) internal successors, (4487), 12 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:52,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:52,630 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] [2023-01-28 02:46:52,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 02:46:52,630 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:52,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:52,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1165370582, now seen corresponding path program 11 times [2023-01-28 02:46:52,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:52,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417828306] [2023-01-28 02:46:52,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:52,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:53,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:53,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417828306] [2023-01-28 02:46:53,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417828306] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:53,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:53,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:46:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956064403] [2023-01-28 02:46:53,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:53,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:46:53,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:53,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:46:53,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:46:53,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 1064 [2023-01-28 02:46:53,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 324 transitions, 4988 flow. Second operand has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:46:53,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:53,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 1064 [2023-01-28 02:46:53,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:00,916 INFO L130 PetriNetUnfolder]: 16860/30772 cut-off events. [2023-01-28 02:47:00,916 INFO L131 PetriNetUnfolder]: For 347694/347694 co-relation queries the response was YES. [2023-01-28 02:47:01,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170136 conditions, 30772 events. 16860/30772 cut-off events. For 347694/347694 co-relation queries the response was YES. Maximal size of possible extension queue 2051. Compared 285896 event pairs, 4772 based on Foata normal form. 2/30773 useless extension candidates. Maximal degree in co-relation 170056. Up to 10862 conditions per place. [2023-01-28 02:47:01,348 INFO L137 encePairwiseOnDemand]: 1052/1064 looper letters, 603 selfloop transitions, 152 changer transitions 16/771 dead transitions. [2023-01-28 02:47:01,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 771 transitions, 11672 flow [2023-01-28 02:47:01,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 02:47:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 02:47:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6642 transitions. [2023-01-28 02:47:01,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3672047766475011 [2023-01-28 02:47:01,354 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6642 transitions. [2023-01-28 02:47:01,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6642 transitions. [2023-01-28 02:47:01,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:01,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6642 transitions. [2023-01-28 02:47:01,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 390.70588235294116) internal successors, (6642), 17 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:01,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:01,370 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:01,370 INFO L175 Difference]: Start difference. First operand has 199 places, 324 transitions, 4988 flow. Second operand 17 states and 6642 transitions. [2023-01-28 02:47:01,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 771 transitions, 11672 flow [2023-01-28 02:47:05,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 771 transitions, 11503 flow, removed 43 selfloop flow, removed 5 redundant places. [2023-01-28 02:47:05,171 INFO L231 Difference]: Finished difference. Result has 224 places, 404 transitions, 6993 flow [2023-01-28 02:47:05,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=4910, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6993, PETRI_PLACES=224, PETRI_TRANSITIONS=404} [2023-01-28 02:47:05,172 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2023-01-28 02:47:05,172 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 404 transitions, 6993 flow [2023-01-28 02:47:05,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:05,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:05,172 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] [2023-01-28 02:47:05,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 02:47:05,172 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:05,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:05,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1478290662, now seen corresponding path program 12 times [2023-01-28 02:47:05,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:05,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211053467] [2023-01-28 02:47:05,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:05,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:06,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:06,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:06,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211053467] [2023-01-28 02:47:06,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211053467] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:06,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:06,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 02:47:06,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208072926] [2023-01-28 02:47:06,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:06,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:47:06,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:47:06,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:47:06,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 1064 [2023-01-28 02:47:06,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 404 transitions, 6993 flow. Second operand has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:06,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:06,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 1064 [2023-01-28 02:47:06,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:16,431 INFO L130 PetriNetUnfolder]: 24515/44858 cut-off events. [2023-01-28 02:47:16,432 INFO L131 PetriNetUnfolder]: For 528886/528886 co-relation queries the response was YES. [2023-01-28 02:47:17,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257531 conditions, 44858 events. 24515/44858 cut-off events. For 528886/528886 co-relation queries the response was YES. Maximal size of possible extension queue 3065. Compared 443078 event pairs, 8839 based on Foata normal form. 2/44859 useless extension candidates. Maximal degree in co-relation 257437. Up to 19099 conditions per place. [2023-01-28 02:47:17,332 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 734 selfloop transitions, 100 changer transitions 7/841 dead transitions. [2023-01-28 02:47:17,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 841 transitions, 15062 flow [2023-01-28 02:47:17,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:47:17,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:47:17,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3808 transitions. [2023-01-28 02:47:17,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35789473684210527 [2023-01-28 02:47:17,336 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3808 transitions. [2023-01-28 02:47:17,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3808 transitions. [2023-01-28 02:47:17,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:17,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3808 transitions. [2023-01-28 02:47:17,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 380.8) internal successors, (3808), 10 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:17,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:17,358 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:17,358 INFO L175 Difference]: Start difference. First operand has 224 places, 404 transitions, 6993 flow. Second operand 10 states and 3808 transitions. [2023-01-28 02:47:17,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 841 transitions, 15062 flow [2023-01-28 02:47:26,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 841 transitions, 14769 flow, removed 98 selfloop flow, removed 3 redundant places. [2023-01-28 02:47:26,999 INFO L231 Difference]: Finished difference. Result has 235 places, 467 transitions, 8600 flow [2023-01-28 02:47:27,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=6779, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8600, PETRI_PLACES=235, PETRI_TRANSITIONS=467} [2023-01-28 02:47:27,000 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 193 predicate places. [2023-01-28 02:47:27,000 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 467 transitions, 8600 flow [2023-01-28 02:47:27,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 367.6923076923077) internal successors, (4780), 13 states have internal predecessors, (4780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:27,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:27,001 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] [2023-01-28 02:47:27,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 02:47:27,001 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:27,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:27,001 INFO L85 PathProgramCache]: Analyzing trace with hash -447950648, now seen corresponding path program 13 times [2023-01-28 02:47:27,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:27,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680182386] [2023-01-28 02:47:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:27,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:28,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:28,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680182386] [2023-01-28 02:47:28,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680182386] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:28,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:28,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:47:28,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950265451] [2023-01-28 02:47:28,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:28,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:47:28,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:28,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:47:28,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:47:28,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 1064 [2023-01-28 02:47:28,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 467 transitions, 8600 flow. Second operand has 10 states, 10 states have (on average 369.5) internal successors, (3695), 10 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:28,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:28,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 1064 [2023-01-28 02:47:28,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:43,540 INFO L130 PetriNetUnfolder]: 30871/56791 cut-off events. [2023-01-28 02:47:43,540 INFO L131 PetriNetUnfolder]: For 739638/739638 co-relation queries the response was YES. [2023-01-28 02:47:44,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332116 conditions, 56791 events. 30871/56791 cut-off events. For 739638/739638 co-relation queries the response was YES. Maximal size of possible extension queue 3875. Compared 581275 event pairs, 12627 based on Foata normal form. 2/56792 useless extension candidates. Maximal degree in co-relation 332017. Up to 28003 conditions per place. [2023-01-28 02:47:44,697 INFO L137 encePairwiseOnDemand]: 1053/1064 looper letters, 876 selfloop transitions, 160 changer transitions 14/1050 dead transitions. [2023-01-28 02:47:44,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 1050 transitions, 18904 flow [2023-01-28 02:47:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 02:47:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 02:47:44,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 6099 transitions. [2023-01-28 02:47:44,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35825892857142855 [2023-01-28 02:47:44,701 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 6099 transitions. [2023-01-28 02:47:44,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 6099 transitions. [2023-01-28 02:47:44,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:44,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 6099 transitions. [2023-01-28 02:47:44,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 381.1875) internal successors, (6099), 16 states have internal predecessors, (6099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:44,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1064.0) internal successors, (18088), 17 states have internal predecessors, (18088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:44,724 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1064.0) internal successors, (18088), 17 states have internal predecessors, (18088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:47:44,724 INFO L175 Difference]: Start difference. First operand has 235 places, 467 transitions, 8600 flow. Second operand 16 states and 6099 transitions. [2023-01-28 02:47:44,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 1050 transitions, 18904 flow [2023-01-28 02:48:02,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1050 transitions, 18683 flow, removed 101 selfloop flow, removed 3 redundant places. [2023-01-28 02:48:02,359 INFO L231 Difference]: Finished difference. Result has 259 places, 528 transitions, 10555 flow [2023-01-28 02:48:02,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=8521, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10555, PETRI_PLACES=259, PETRI_TRANSITIONS=528} [2023-01-28 02:48:02,360 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 217 predicate places. [2023-01-28 02:48:02,360 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 528 transitions, 10555 flow [2023-01-28 02:48:02,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 369.5) internal successors, (3695), 10 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:48:02,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:02,361 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] [2023-01-28 02:48:02,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 02:48:02,361 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:48:02,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:02,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1864998854, now seen corresponding path program 14 times [2023-01-28 02:48:02,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:02,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211176606] [2023-01-28 02:48:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:02,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:03,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:03,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211176606] [2023-01-28 02:48:03,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211176606] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:03,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:03,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:48:03,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776081978] [2023-01-28 02:48:03,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:03,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:48:03,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:03,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:48:03,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:48:03,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 1064 [2023-01-28 02:48:03,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 528 transitions, 10555 flow. Second operand has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:48:03,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:03,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 1064 [2023-01-28 02:48:03,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:19,984 INFO L130 PetriNetUnfolder]: 30869/56774 cut-off events. [2023-01-28 02:48:19,984 INFO L131 PetriNetUnfolder]: For 803964/803964 co-relation queries the response was YES. [2023-01-28 02:48:21,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339350 conditions, 56774 events. 30869/56774 cut-off events. For 803964/803964 co-relation queries the response was YES. Maximal size of possible extension queue 3873. Compared 581699 event pairs, 9335 based on Foata normal form. 1/56774 useless extension candidates. Maximal degree in co-relation 339239. Up to 26768 conditions per place. [2023-01-28 02:48:21,514 INFO L137 encePairwiseOnDemand]: 1049/1064 looper letters, 429 selfloop transitions, 460 changer transitions 7/896 dead transitions. [2023-01-28 02:48:21,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 896 transitions, 17622 flow [2023-01-28 02:48:21,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 02:48:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 02:48:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 5833 transitions. [2023-01-28 02:48:21,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36547619047619045 [2023-01-28 02:48:21,519 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 5833 transitions. [2023-01-28 02:48:21,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 5833 transitions. [2023-01-28 02:48:21,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:48:21,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 5833 transitions. [2023-01-28 02:48:21,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 388.8666666666667) internal successors, (5833), 15 states have internal predecessors, (5833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:48:21,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:48:21,532 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:48:21,532 INFO L175 Difference]: Start difference. First operand has 259 places, 528 transitions, 10555 flow. Second operand 15 states and 5833 transitions. [2023-01-28 02:48:21,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 896 transitions, 17622 flow [2023-01-28 02:48:40,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 896 transitions, 17479 flow, removed 71 selfloop flow, removed 3 redundant places. [2023-01-28 02:48:40,634 INFO L231 Difference]: Finished difference. Result has 276 places, 702 transitions, 14937 flow [2023-01-28 02:48:40,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=10450, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14937, PETRI_PLACES=276, PETRI_TRANSITIONS=702} [2023-01-28 02:48:40,634 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2023-01-28 02:48:40,635 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 702 transitions, 14937 flow [2023-01-28 02:48:40,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:48:40,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:40,635 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] [2023-01-28 02:48:40,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-28 02:48:40,635 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:48:40,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1317815394, now seen corresponding path program 15 times [2023-01-28 02:48:40,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:40,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939386456] [2023-01-28 02:48:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:40,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:41,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:41,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939386456] [2023-01-28 02:48:41,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939386456] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:41,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:41,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:48:41,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068986969] [2023-01-28 02:48:41,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:41,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:48:41,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:41,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:48:41,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:48:41,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:48:41,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 702 transitions, 14937 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:48:41,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:41,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:48:41,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:59,950 INFO L130 PetriNetUnfolder]: 33320/61333 cut-off events. [2023-01-28 02:48:59,950 INFO L131 PetriNetUnfolder]: For 1000612/1000612 co-relation queries the response was YES. [2023-01-28 02:49:01,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386771 conditions, 61333 events. 33320/61333 cut-off events. For 1000612/1000612 co-relation queries the response was YES. Maximal size of possible extension queue 4178. Compared 633571 event pairs, 13362 based on Foata normal form. 2/61334 useless extension candidates. Maximal degree in co-relation 386654. Up to 28004 conditions per place. [2023-01-28 02:49:01,848 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1005 selfloop transitions, 211 changer transitions 16/1232 dead transitions. [2023-01-28 02:49:01,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1232 transitions, 25059 flow [2023-01-28 02:49:01,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 02:49:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 02:49:01,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6055 transitions. [2023-01-28 02:49:01,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793859649122807 [2023-01-28 02:49:01,853 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6055 transitions. [2023-01-28 02:49:01,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6055 transitions. [2023-01-28 02:49:01,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:49:01,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6055 transitions. [2023-01-28 02:49:01,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 403.6666666666667) internal successors, (6055), 15 states have internal predecessors, (6055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:49:01,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:49:01,866 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:49:01,866 INFO L175 Difference]: Start difference. First operand has 276 places, 702 transitions, 14937 flow. Second operand 15 states and 6055 transitions. [2023-01-28 02:49:01,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 1232 transitions, 25059 flow [2023-01-28 02:49:31,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1232 transitions, 24749 flow, removed 155 selfloop flow, removed 1 redundant places. [2023-01-28 02:49:32,014 INFO L231 Difference]: Finished difference. Result has 298 places, 749 transitions, 16646 flow [2023-01-28 02:49:32,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=14759, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=16646, PETRI_PLACES=298, PETRI_TRANSITIONS=749} [2023-01-28 02:49:32,015 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2023-01-28 02:49:32,015 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 749 transitions, 16646 flow [2023-01-28 02:49:32,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:49:32,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:49:32,015 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] [2023-01-28 02:49:32,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-28 02:49:32,016 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:49:32,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:49:32,016 INFO L85 PathProgramCache]: Analyzing trace with hash 178866192, now seen corresponding path program 16 times [2023-01-28 02:49:32,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:49:32,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697758548] [2023-01-28 02:49:32,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:49:32,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:49:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:49:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:32,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:49:32,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697758548] [2023-01-28 02:49:32,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697758548] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:49:32,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:49:32,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:49:32,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663140774] [2023-01-28 02:49:32,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:49:32,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:49:32,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:49:32,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:49:32,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:49:32,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 1064 [2023-01-28 02:49:32,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 749 transitions, 16646 flow. Second operand has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:49:32,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:49:32,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 1064 [2023-01-28 02:49:32,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:49:53,656 INFO L130 PetriNetUnfolder]: 33317/61347 cut-off events. [2023-01-28 02:49:53,656 INFO L131 PetriNetUnfolder]: For 1014682/1014682 co-relation queries the response was YES. [2023-01-28 02:49:55,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389198 conditions, 61347 events. 33317/61347 cut-off events. For 1014682/1014682 co-relation queries the response was YES. Maximal size of possible extension queue 4180. Compared 634775 event pairs, 11205 based on Foata normal form. 1/61347 useless extension candidates. Maximal degree in co-relation 389071. Up to 28119 conditions per place. [2023-01-28 02:49:55,607 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 403 selfloop transitions, 518 changer transitions 7/928 dead transitions. [2023-01-28 02:49:55,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 928 transitions, 20423 flow [2023-01-28 02:49:55,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 02:49:55,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 02:49:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 5842 transitions. [2023-01-28 02:49:55,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36604010025062655 [2023-01-28 02:49:55,612 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 5842 transitions. [2023-01-28 02:49:55,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 5842 transitions. [2023-01-28 02:49:55,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:49:55,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 5842 transitions. [2023-01-28 02:49:55,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 389.46666666666664) internal successors, (5842), 15 states have internal predecessors, (5842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:49:55,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:49:55,629 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1064.0) internal successors, (17024), 16 states have internal predecessors, (17024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:49:55,629 INFO L175 Difference]: Start difference. First operand has 298 places, 749 transitions, 16646 flow. Second operand 15 states and 5842 transitions. [2023-01-28 02:49:55,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 928 transitions, 20423 flow [2023-01-28 02:50:23,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 928 transitions, 19968 flow, removed 94 selfloop flow, removed 6 redundant places. [2023-01-28 02:50:23,156 INFO L231 Difference]: Finished difference. Result has 311 places, 768 transitions, 18052 flow [2023-01-28 02:50:23,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16215, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=502, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=18052, PETRI_PLACES=311, PETRI_TRANSITIONS=768} [2023-01-28 02:50:23,157 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-01-28 02:50:23,157 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 768 transitions, 18052 flow [2023-01-28 02:50:23,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:50:23,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:50:23,158 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] [2023-01-28 02:50:23,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-28 02:50:23,158 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:50:23,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:50:23,158 INFO L85 PathProgramCache]: Analyzing trace with hash -317965381, now seen corresponding path program 2 times [2023-01-28 02:50:23,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:50:23,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373244124] [2023-01-28 02:50:23,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:50:23,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:50:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:50:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:50:23,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:50:23,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373244124] [2023-01-28 02:50:23,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373244124] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:50:23,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:50:23,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:50:23,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794833435] [2023-01-28 02:50:23,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:50:23,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:50:23,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:50:23,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:50:23,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:50:23,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1064 [2023-01-28 02:50:23,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 768 transitions, 18052 flow. Second operand has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:50:23,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:50:23,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1064 [2023-01-28 02:50:23,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:50:48,809 INFO L130 PetriNetUnfolder]: 39389/73419 cut-off events. [2023-01-28 02:50:48,809 INFO L131 PetriNetUnfolder]: For 1377659/1377659 co-relation queries the response was YES. [2023-01-28 02:50:50,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480271 conditions, 73419 events. 39389/73419 cut-off events. For 1377659/1377659 co-relation queries the response was YES. Maximal size of possible extension queue 4819. Compared 786743 event pairs, 10546 based on Foata normal form. 789/74207 useless extension candidates. Maximal degree in co-relation 480139. Up to 32138 conditions per place. [2023-01-28 02:50:51,216 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 1096 selfloop transitions, 206 changer transitions 0/1302 dead transitions. [2023-01-28 02:50:51,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 1302 transitions, 32290 flow [2023-01-28 02:50:51,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:50:51,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:50:51,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1762 transitions. [2023-01-28 02:50:51,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41400375939849626 [2023-01-28 02:50:51,218 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1762 transitions. [2023-01-28 02:50:51,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1762 transitions. [2023-01-28 02:50:51,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:50:51,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1762 transitions. [2023-01-28 02:50:51,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 440.5) internal successors, (1762), 4 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:50:51,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:50:51,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:50:51,222 INFO L175 Difference]: Start difference. First operand has 311 places, 768 transitions, 18052 flow. Second operand 4 states and 1762 transitions. [2023-01-28 02:50:51,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 1302 transitions, 32290 flow [2023-01-28 02:51:32,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 1302 transitions, 31026 flow, removed 178 selfloop flow, removed 5 redundant places. [2023-01-28 02:51:32,945 INFO L231 Difference]: Finished difference. Result has 311 places, 841 transitions, 20192 flow [2023-01-28 02:51:32,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=17068, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=20192, PETRI_PLACES=311, PETRI_TRANSITIONS=841} [2023-01-28 02:51:32,946 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 269 predicate places. [2023-01-28 02:51:32,946 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 841 transitions, 20192 flow [2023-01-28 02:51:32,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:51:32,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:51:32,947 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] [2023-01-28 02:51:32,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-01-28 02:51:32,947 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:51:32,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:51:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1330045670, now seen corresponding path program 17 times [2023-01-28 02:51:32,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:51:32,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858744139] [2023-01-28 02:51:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:51:32,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:51:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:51:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:51:33,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:51:33,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858744139] [2023-01-28 02:51:33,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858744139] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:51:33,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:51:33,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 02:51:33,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854755399] [2023-01-28 02:51:33,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:51:33,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 02:51:33,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:51:33,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 02:51:33,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:51:33,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 1064 [2023-01-28 02:51:33,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 841 transitions, 20192 flow. Second operand has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:51:33,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:51:33,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 1064 [2023-01-28 02:51:33,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:52:02,085 INFO L130 PetriNetUnfolder]: 41546/77438 cut-off events. [2023-01-28 02:52:02,085 INFO L131 PetriNetUnfolder]: For 1418452/1418452 co-relation queries the response was YES. [2023-01-28 02:52:04,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517543 conditions, 77438 events. 41546/77438 cut-off events. For 1418452/1418452 co-relation queries the response was YES. Maximal size of possible extension queue 5089. Compared 830930 event pairs, 19593 based on Foata normal form. 2/77439 useless extension candidates. Maximal degree in co-relation 517410. Up to 35892 conditions per place. [2023-01-28 02:52:04,589 INFO L137 encePairwiseOnDemand]: 1050/1064 looper letters, 1153 selfloop transitions, 280 changer transitions 16/1449 dead transitions. [2023-01-28 02:52:04,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 1449 transitions, 32823 flow [2023-01-28 02:52:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 02:52:04,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 02:52:04,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6669 transitions. [2023-01-28 02:52:04,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36869747899159666 [2023-01-28 02:52:04,594 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6669 transitions. [2023-01-28 02:52:04,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6669 transitions. [2023-01-28 02:52:04,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:52:04,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6669 transitions. [2023-01-28 02:52:04,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 392.29411764705884) internal successors, (6669), 17 states have internal predecessors, (6669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:52:04,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:52:04,605 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:52:04,605 INFO L175 Difference]: Start difference. First operand has 311 places, 841 transitions, 20192 flow. Second operand 17 states and 6669 transitions. [2023-01-28 02:52:04,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 1449 transitions, 32823 flow [2023-01-28 02:53:00,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 1449 transitions, 32807 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-01-28 02:53:00,047 INFO L231 Difference]: Finished difference. Result has 341 places, 908 transitions, 22973 flow [2023-01-28 02:53:00,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=20190, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=22973, PETRI_PLACES=341, PETRI_TRANSITIONS=908} [2023-01-28 02:53:00,048 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2023-01-28 02:53:00,048 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 908 transitions, 22973 flow [2023-01-28 02:53:00,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 379.5) internal successors, (3795), 10 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:53:00,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:53:00,049 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] [2023-01-28 02:53:00,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-01-28 02:53:00,049 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:53:00,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:53:00,049 INFO L85 PathProgramCache]: Analyzing trace with hash -857679955, now seen corresponding path program 3 times [2023-01-28 02:53:00,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:53:00,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786803410] [2023-01-28 02:53:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:53:00,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:53:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:53:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:53:00,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:53:00,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786803410] [2023-01-28 02:53:00,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786803410] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:53:00,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:53:00,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:53:00,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078311790] [2023-01-28 02:53:00,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:53:00,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:53:00,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:53:00,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:53:00,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:53:00,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1064 [2023-01-28 02:53:00,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 908 transitions, 22973 flow. Second operand has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:53:00,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:53:00,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1064 [2023-01-28 02:53:00,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:53:29,016 INFO L130 PetriNetUnfolder]: 42071/76230 cut-off events. [2023-01-28 02:53:29,017 INFO L131 PetriNetUnfolder]: For 1524772/1524772 co-relation queries the response was YES. [2023-01-28 02:53:32,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516578 conditions, 76230 events. 42071/76230 cut-off events. For 1524772/1524772 co-relation queries the response was YES. Maximal size of possible extension queue 4880. Compared 792088 event pairs, 10702 based on Foata normal form. 781/77010 useless extension candidates. Maximal degree in co-relation 516430. Up to 37857 conditions per place. [2023-01-28 02:53:32,399 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 966 selfloop transitions, 269 changer transitions 0/1235 dead transitions. [2023-01-28 02:53:32,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1235 transitions, 31633 flow [2023-01-28 02:53:32,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:53:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:53:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1758 transitions. [2023-01-28 02:53:32,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130639097744361 [2023-01-28 02:53:32,402 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1758 transitions. [2023-01-28 02:53:32,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1758 transitions. [2023-01-28 02:53:32,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:53:32,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1758 transitions. [2023-01-28 02:53:32,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 439.5) internal successors, (1758), 4 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:53:32,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:53:32,405 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:53:32,405 INFO L175 Difference]: Start difference. First operand has 341 places, 908 transitions, 22973 flow. Second operand 4 states and 1758 transitions. [2023-01-28 02:53:32,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 1235 transitions, 31633 flow [2023-01-28 02:54:18,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 1235 transitions, 30772 flow, removed 240 selfloop flow, removed 5 redundant places. [2023-01-28 02:54:18,079 INFO L231 Difference]: Finished difference. Result has 339 places, 942 transitions, 23740 flow [2023-01-28 02:54:18,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=19921, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=23740, PETRI_PLACES=339, PETRI_TRANSITIONS=942} [2023-01-28 02:54:18,080 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2023-01-28 02:54:18,080 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 942 transitions, 23740 flow [2023-01-28 02:54:18,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 426.75) internal successors, (1707), 4 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:54:18,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:54:18,082 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] [2023-01-28 02:54:18,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-01-28 02:54:18,082 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:54:18,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:54:18,082 INFO L85 PathProgramCache]: Analyzing trace with hash -777514146, now seen corresponding path program 18 times [2023-01-28 02:54:18,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:54:18,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489209197] [2023-01-28 02:54:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:54:18,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:54:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:54:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:54:18,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:54:18,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489209197] [2023-01-28 02:54:18,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489209197] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:54:18,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:54:18,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:54:18,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21098107] [2023-01-28 02:54:18,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:54:18,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:54:18,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:54:18,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:54:18,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:54:18,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-01-28 02:54:18,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 942 transitions, 23740 flow. Second operand has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:54:18,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:54:18,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-01-28 02:54:18,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:54:48,182 INFO L130 PetriNetUnfolder]: 42071/76229 cut-off events. [2023-01-28 02:54:48,182 INFO L131 PetriNetUnfolder]: For 1497092/1497092 co-relation queries the response was YES. [2023-01-28 02:54:50,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526524 conditions, 76229 events. 42071/76229 cut-off events. For 1497092/1497092 co-relation queries the response was YES. Maximal size of possible extension queue 4799. Compared 787673 event pairs, 21493 based on Foata normal form. 1/76229 useless extension candidates. Maximal degree in co-relation 526377. Up to 52952 conditions per place. [2023-01-28 02:54:50,812 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 726 selfloop transitions, 330 changer transitions 7/1063 dead transitions. [2023-01-28 02:54:50,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1063 transitions, 27274 flow [2023-01-28 02:54:50,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:54:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:54:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3624 transitions. [2023-01-28 02:54:50,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37844611528822053 [2023-01-28 02:54:50,845 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3624 transitions. [2023-01-28 02:54:50,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3624 transitions. [2023-01-28 02:54:50,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:54:50,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3624 transitions. [2023-01-28 02:54:50,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.6666666666667) internal successors, (3624), 9 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:54:50,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:54:50,853 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:54:50,853 INFO L175 Difference]: Start difference. First operand has 339 places, 942 transitions, 23740 flow. Second operand 9 states and 3624 transitions. [2023-01-28 02:54:50,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1063 transitions, 27274 flow [2023-01-28 02:55:47,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1063 transitions, 27242 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-01-28 02:55:47,296 INFO L231 Difference]: Finished difference. Result has 348 places, 941 transitions, 24346 flow [2023-01-28 02:55:47,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=23710, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=24346, PETRI_PLACES=348, PETRI_TRANSITIONS=941} [2023-01-28 02:55:47,297 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 306 predicate places. [2023-01-28 02:55:47,297 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 941 transitions, 24346 flow [2023-01-28 02:55:47,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 390.8888888888889) internal successors, (3518), 9 states have internal predecessors, (3518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:55:47,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:55:47,297 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] [2023-01-28 02:55:47,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-01-28 02:55:47,298 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:55:47,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:55:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash 117954734, now seen corresponding path program 19 times [2023-01-28 02:55:47,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:55:47,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882023206] [2023-01-28 02:55:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:55:47,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:55:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:55:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 02:55:48,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:55:48,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882023206] [2023-01-28 02:55:48,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882023206] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:55:48,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659078309] [2023-01-28 02:55:48,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 02:55:48,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:55:48,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:55:48,427 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:55:48,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 02:55:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:55:48,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 02:55:48,599 INFO L286 TraceCheckSpWp]: Computing forward predicates...