/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 17:30:19,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 17:30:19,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 17:30:19,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 17:30:19,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 17:30:19,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 17:30:19,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 17:30:19,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 17:30:19,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 17:30:19,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 17:30:19,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 17:30:19,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 17:30:19,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 17:30:19,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 17:30:19,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 17:30:19,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 17:30:19,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 17:30:19,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 17:30:19,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 17:30:19,388 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 17:30:19,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 17:30:19,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 17:30:19,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 17:30:19,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 17:30:19,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 17:30:19,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 17:30:19,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 17:30:19,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 17:30:19,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 17:30:19,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 17:30:19,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 17:30:19,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 17:30:19,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 17:30:19,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 17:30:19,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 17:30:19,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 17:30:19,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 17:30:19,433 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 17:30:19,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 17:30:19,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 17:30:19,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 17:30:19,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 17:30:19,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 17:30:19,436 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 17:30:19,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 17:30:19,436 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 17:30:19,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 17:30:19,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 17:30:19,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 17:30:19,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 17:30:19,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 17:30:19,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 17:30:19,437 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 17:30:19,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 17:30:19,437 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 17:30:19,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 17:30:19,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 17:30:19,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 17:30:19,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 17:30:19,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 17:30:19,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:30:19,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 17:30:19,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 17:30:19,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 17:30:19,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 17:30:19,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 17:30:19,439 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 17:30:19,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 17:30:19,439 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 17:30:19,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 17:30:19,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 17:30:19,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 17:30:19,648 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 17:30:19,649 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 17:30:19,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2023-01-27 17:30:20,774 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 17:30:21,044 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 17:30:21,044 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2023-01-27 17:30:21,059 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b33e6f77c/b200b7295636470f8f9bea660e70a39b/FLAG787a6b3f6 [2023-01-27 17:30:21,075 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b33e6f77c/b200b7295636470f8f9bea660e70a39b [2023-01-27 17:30:21,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 17:30:21,079 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 17:30:21,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 17:30:21,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 17:30:21,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 17:30:21,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d3c7dc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21, skipping insertion in model container [2023-01-27 17:30:21,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 17:30:21,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 17:30:21,514 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] [2023-01-27 17:30:21,522 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] [2023-01-27 17:30:21,527 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] [2023-01-27 17:30:21,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:30:21,544 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 17:30:21,607 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43284,43297] [2023-01-27 17:30:21,608 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43491,43504] [2023-01-27 17:30:21,610 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i[43772,43785] [2023-01-27 17:30:21,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 17:30:21,693 INFO L208 MainTranslator]: Completed translation [2023-01-27 17:30:21,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21 WrapperNode [2023-01-27 17:30:21,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 17:30:21,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 17:30:21,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 17:30:21,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 17:30:21,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,769 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 252 [2023-01-27 17:30:21,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 17:30:21,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 17:30:21,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 17:30:21,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 17:30:21,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,808 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 17:30:21,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 17:30:21,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 17:30:21,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 17:30:21,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21" (1/1) ... [2023-01-27 17:30:21,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 17:30:21,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 17:30:21,870 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 17:30:21,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 17:30:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-27 17:30:21,914 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-27 17:30:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-27 17:30:21,916 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-27 17:30:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 17:30:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 17:30:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 17:30:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 17:30:21,916 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 17:30:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 17:30:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 17:30:21,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 17:30:21,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 17:30:21,918 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 17:30:22,038 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 17:30:22,040 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 17:30:22,476 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 17:30:22,485 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 17:30:22,485 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 17:30:22,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:30:22 BoogieIcfgContainer [2023-01-27 17:30:22,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 17:30:22,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 17:30:22,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 17:30:22,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 17:30:22,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 05:30:21" (1/3) ... [2023-01-27 17:30:22,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c07b2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:30:22, skipping insertion in model container [2023-01-27 17:30:22,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 05:30:21" (2/3) ... [2023-01-27 17:30:22,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c07b2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 05:30:22, skipping insertion in model container [2023-01-27 17:30:22,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 05:30:22" (3/3) ... [2023-01-27 17:30:22,500 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-01-27 17:30:22,515 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 17:30:22,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-27 17:30:22,516 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 17:30:22,646 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 17:30:22,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 266 transitions, 548 flow [2023-01-27 17:30:22,786 INFO L130 PetriNetUnfolder]: 15/264 cut-off events. [2023-01-27 17:30:22,786 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:30:22,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 264 events. 15/264 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 358 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 193. Up to 2 conditions per place. [2023-01-27 17:30:22,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 266 transitions, 548 flow [2023-01-27 17:30:22,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 255 transitions, 519 flow [2023-01-27 17:30:22,810 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 17:30:22,819 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 255 transitions, 519 flow [2023-01-27 17:30:22,821 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 255 transitions, 519 flow [2023-01-27 17:30:22,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 255 transitions, 519 flow [2023-01-27 17:30:22,883 INFO L130 PetriNetUnfolder]: 15/255 cut-off events. [2023-01-27 17:30:22,884 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 17:30:22,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 255 events. 15/255 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 324 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 193. Up to 2 conditions per place. [2023-01-27 17:30:22,896 INFO L119 LiptonReduction]: Number of co-enabled transitions 15864 [2023-01-27 17:30:30,476 INFO L134 LiptonReduction]: Checked pairs total: 35874 [2023-01-27 17:30:30,476 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-01-27 17:30:30,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 17:30:30,493 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;@36531a8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 17:30:30,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-27 17:30:30,495 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-01-27 17:30:30,495 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 17:30:30,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:30,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-01-27 17:30:30,496 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 4 more)] === [2023-01-27 17:30:30,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash 31999, now seen corresponding path program 1 times [2023-01-27 17:30:30,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:30,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442099506] [2023-01-27 17:30:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:30,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:30,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:30,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442099506] [2023-01-27 17:30:30,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442099506] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:30,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:30,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 17:30:30,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752255535] [2023-01-27 17:30:30,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:30,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 17:30:30,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:30,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 17:30:30,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 17:30:30,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 482 [2023-01-27 17:30:30,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 67 transitions, 143 flow. Second operand has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:30,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:30,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 482 [2023-01-27 17:30:30,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:30,936 INFO L130 PetriNetUnfolder]: 1489/2562 cut-off events. [2023-01-27 17:30:30,937 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-01-27 17:30:30,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4947 conditions, 2562 events. 1489/2562 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12043 event pairs, 1167 based on Foata normal form. 32/2225 useless extension candidates. Maximal degree in co-relation 4794. Up to 2313 conditions per place. [2023-01-27 17:30:30,950 INFO L137 encePairwiseOnDemand]: 479/482 looper letters, 52 selfloop transitions, 0 changer transitions 0/62 dead transitions. [2023-01-27 17:30:30,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 237 flow [2023-01-27 17:30:30,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 17:30:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 17:30:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 561 transitions. [2023-01-27 17:30:30,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819502074688797 [2023-01-27 17:30:30,964 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 561 transitions. [2023-01-27 17:30:30,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 561 transitions. [2023-01-27 17:30:30,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:30,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 561 transitions. [2023-01-27 17:30:30,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 280.5) internal successors, (561), 2 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:30,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 482.0) internal successors, (1446), 3 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:30,977 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 482.0) internal successors, (1446), 3 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:30,979 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 143 flow. Second operand 2 states and 561 transitions. [2023-01-27 17:30:30,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 237 flow [2023-01-27 17:30:30,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 62 transitions, 232 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 17:30:30,984 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 128 flow [2023-01-27 17:30:30,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=128, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2023-01-27 17:30:30,989 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2023-01-27 17:30:30,989 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 128 flow [2023-01-27 17:30:30,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 253.5) internal successors, (507), 2 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:30,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:30,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:30,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 17:30:30,990 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:30,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:30,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1793584973, now seen corresponding path program 1 times [2023-01-27 17:30:30,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:30,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851066196] [2023-01-27 17:30:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:30,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:31,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:31,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851066196] [2023-01-27 17:30:31,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851066196] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:31,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:31,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 17:30:31,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057880908] [2023-01-27 17:30:31,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:31,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:30:31,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:31,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:30:31,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:30:31,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 482 [2023-01-27 17:30:31,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:31,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:31,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 482 [2023-01-27 17:30:31,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:31,503 INFO L130 PetriNetUnfolder]: 1457/2528 cut-off events. [2023-01-27 17:30:31,503 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 17:30:31,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4864 conditions, 2528 events. 1457/2528 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12005 event pairs, 1122 based on Foata normal form. 0/2191 useless extension candidates. Maximal degree in co-relation 4861. Up to 2166 conditions per place. [2023-01-27 17:30:31,515 INFO L137 encePairwiseOnDemand]: 478/482 looper letters, 67 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-01-27 17:30:31,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 306 flow [2023-01-27 17:30:31,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:30:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:30:31,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 812 transitions. [2023-01-27 17:30:31,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615491009681881 [2023-01-27 17:30:31,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 812 transitions. [2023-01-27 17:30:31,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 812 transitions. [2023-01-27 17:30:31,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:31,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 812 transitions. [2023-01-27 17:30:31,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:31,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:31,527 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:31,527 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 128 flow. Second operand 3 states and 812 transitions. [2023-01-27 17:30:31,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 306 flow [2023-01-27 17:30:31,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 306 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 17:30:31,530 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 132 flow [2023-01-27 17:30:31,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-01-27 17:30:31,531 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2023-01-27 17:30:31,531 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 132 flow [2023-01-27 17:30:31,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:31,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:31,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:31,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 17:30:31,533 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:31,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:31,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1351646121, now seen corresponding path program 1 times [2023-01-27 17:30:31,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:31,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226115726] [2023-01-27 17:30:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:31,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:33,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:33,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226115726] [2023-01-27 17:30:33,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226115726] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:33,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:33,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 17:30:33,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849264385] [2023-01-27 17:30:33,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:33,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 17:30:33,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:33,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 17:30:33,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 17:30:33,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 482 [2023-01-27 17:30:33,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:33,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:33,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 482 [2023-01-27 17:30:33,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:33,643 INFO L130 PetriNetUnfolder]: 1557/2661 cut-off events. [2023-01-27 17:30:33,644 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-27 17:30:33,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5260 conditions, 2661 events. 1557/2661 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 12368 event pairs, 1200 based on Foata normal form. 0/2315 useless extension candidates. Maximal degree in co-relation 5256. Up to 2435 conditions per place. [2023-01-27 17:30:33,658 INFO L137 encePairwiseOnDemand]: 475/482 looper letters, 56 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2023-01-27 17:30:33,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 288 flow [2023-01-27 17:30:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 17:30:33,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 17:30:33,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1176 transitions. [2023-01-27 17:30:33,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066390041493776 [2023-01-27 17:30:33,662 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1176 transitions. [2023-01-27 17:30:33,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1176 transitions. [2023-01-27 17:30:33,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:33,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1176 transitions. [2023-01-27 17:30:33,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:33,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 482.0) internal successors, (3374), 7 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:33,671 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 482.0) internal successors, (3374), 7 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:33,671 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 132 flow. Second operand 6 states and 1176 transitions. [2023-01-27 17:30:33,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 288 flow [2023-01-27 17:30:33,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 73 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 17:30:33,675 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 184 flow [2023-01-27 17:30:33,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2023-01-27 17:30:33,676 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 5 predicate places. [2023-01-27 17:30:33,676 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 184 flow [2023-01-27 17:30:33,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.4) internal successors, (937), 5 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:33,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:33,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:33,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 17:30:33,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:33,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:33,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1063417523, now seen corresponding path program 1 times [2023-01-27 17:30:33,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:33,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576404372] [2023-01-27 17:30:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:33,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:34,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:34,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576404372] [2023-01-27 17:30:34,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576404372] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:34,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:34,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 17:30:34,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815740655] [2023-01-27 17:30:34,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:34,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 17:30:34,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:34,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 17:30:34,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-01-27 17:30:34,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 482 [2023-01-27 17:30:34,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 182.16666666666666) internal successors, (1093), 6 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:34,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:34,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 482 [2023-01-27 17:30:34,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:34,655 INFO L130 PetriNetUnfolder]: 1732/2919 cut-off events. [2023-01-27 17:30:34,655 INFO L131 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2023-01-27 17:30:34,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5953 conditions, 2919 events. 1732/2919 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 13903 event pairs, 297 based on Foata normal form. 17/2612 useless extension candidates. Maximal degree in co-relation 5945. Up to 2384 conditions per place. [2023-01-27 17:30:34,670 INFO L137 encePairwiseOnDemand]: 476/482 looper letters, 92 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2023-01-27 17:30:34,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 484 flow [2023-01-27 17:30:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 17:30:34,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 17:30:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 998 transitions. [2023-01-27 17:30:34,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4141078838174274 [2023-01-27 17:30:34,674 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 998 transitions. [2023-01-27 17:30:34,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 998 transitions. [2023-01-27 17:30:34,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:34,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 998 transitions. [2023-01-27 17:30:34,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.6) internal successors, (998), 5 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:34,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 482.0) internal successors, (2892), 6 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:34,689 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 482.0) internal successors, (2892), 6 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:34,689 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 184 flow. Second operand 5 states and 998 transitions. [2023-01-27 17:30:34,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 484 flow [2023-01-27 17:30:34,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 110 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 17:30:34,695 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 246 flow [2023-01-27 17:30:34,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=75, PETRI_TRANSITIONS=75} [2023-01-27 17:30:34,697 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2023-01-27 17:30:34,697 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 246 flow [2023-01-27 17:30:34,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.16666666666666) internal successors, (1093), 6 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:34,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:34,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:34,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 17:30:34,698 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:34,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash -306674726, now seen corresponding path program 1 times [2023-01-27 17:30:34,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:34,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181144079] [2023-01-27 17:30:34,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:34,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:35,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:35,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181144079] [2023-01-27 17:30:35,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181144079] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:35,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:35,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 17:30:35,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068571087] [2023-01-27 17:30:35,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:35,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 17:30:35,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:35,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 17:30:35,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-27 17:30:35,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 482 [2023-01-27 17:30:35,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 246 flow. Second operand has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:35,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:35,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 482 [2023-01-27 17:30:35,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:35,868 INFO L130 PetriNetUnfolder]: 1737/2937 cut-off events. [2023-01-27 17:30:35,868 INFO L131 PetriNetUnfolder]: For 646/646 co-relation queries the response was YES. [2023-01-27 17:30:35,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 2937 events. 1737/2937 cut-off events. For 646/646 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 14004 event pairs, 1240 based on Foata normal form. 0/2610 useless extension candidates. Maximal degree in co-relation 6288. Up to 2710 conditions per place. [2023-01-27 17:30:35,887 INFO L137 encePairwiseOnDemand]: 472/482 looper letters, 70 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2023-01-27 17:30:35,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 93 transitions, 459 flow [2023-01-27 17:30:35,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 17:30:35,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 17:30:35,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1471 transitions. [2023-01-27 17:30:35,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38148340248962653 [2023-01-27 17:30:35,891 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1471 transitions. [2023-01-27 17:30:35,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1471 transitions. [2023-01-27 17:30:35,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:35,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1471 transitions. [2023-01-27 17:30:35,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 183.875) internal successors, (1471), 8 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:35,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:35,903 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:35,903 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 246 flow. Second operand 8 states and 1471 transitions. [2023-01-27 17:30:35,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 93 transitions, 459 flow [2023-01-27 17:30:35,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 93 transitions, 451 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-27 17:30:35,910 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 312 flow [2023-01-27 17:30:35,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=312, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2023-01-27 17:30:35,912 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 22 predicate places. [2023-01-27 17:30:35,913 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 312 flow [2023-01-27 17:30:35,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 175.44444444444446) internal successors, (1579), 9 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:35,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:35,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:35,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 17:30:35,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:35,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1111539889, now seen corresponding path program 1 times [2023-01-27 17:30:35,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:35,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709397340] [2023-01-27 17:30:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:35,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:35,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:35,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709397340] [2023-01-27 17:30:35,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709397340] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:35,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:35,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 17:30:35,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648082243] [2023-01-27 17:30:35,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:35,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:30:35,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:35,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:30:35,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:30:35,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 482 [2023-01-27 17:30:35,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 312 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:35,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:35,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 482 [2023-01-27 17:30:35,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:36,239 INFO L130 PetriNetUnfolder]: 1303/2269 cut-off events. [2023-01-27 17:30:36,239 INFO L131 PetriNetUnfolder]: For 293/293 co-relation queries the response was YES. [2023-01-27 17:30:36,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4832 conditions, 2269 events. 1303/2269 cut-off events. For 293/293 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 9138 event pairs, 648 based on Foata normal form. 0/1940 useless extension candidates. Maximal degree in co-relation 4816. Up to 1312 conditions per place. [2023-01-27 17:30:36,252 INFO L137 encePairwiseOnDemand]: 478/482 looper letters, 86 selfloop transitions, 3 changer transitions 1/99 dead transitions. [2023-01-27 17:30:36,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 99 transitions, 516 flow [2023-01-27 17:30:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:30:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:30:36,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 819 transitions. [2023-01-27 17:30:36,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5663900414937759 [2023-01-27 17:30:36,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 819 transitions. [2023-01-27 17:30:36,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 819 transitions. [2023-01-27 17:30:36,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:36,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 819 transitions. [2023-01-27 17:30:36,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:36,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:36,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:36,260 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 312 flow. Second operand 3 states and 819 transitions. [2023-01-27 17:30:36,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 99 transitions, 516 flow [2023-01-27 17:30:36,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 99 transitions, 463 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-01-27 17:30:36,266 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 243 flow [2023-01-27 17:30:36,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=76, PETRI_TRANSITIONS=75} [2023-01-27 17:30:36,269 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2023-01-27 17:30:36,269 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 243 flow [2023-01-27 17:30:36,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:36,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:36,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:36,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 17:30:36,270 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:36,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash 38477220, now seen corresponding path program 1 times [2023-01-27 17:30:36,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:36,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604706308] [2023-01-27 17:30:36,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:36,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:37,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:37,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:37,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604706308] [2023-01-27 17:30:37,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604706308] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:37,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:37,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 17:30:37,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016252915] [2023-01-27 17:30:37,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:37,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 17:30:37,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:37,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 17:30:37,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-27 17:30:37,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 482 [2023-01-27 17:30:37,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 75 transitions, 243 flow. Second operand has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:37,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 482 [2023-01-27 17:30:37,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:37,920 INFO L130 PetriNetUnfolder]: 1378/2429 cut-off events. [2023-01-27 17:30:37,920 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2023-01-27 17:30:37,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5085 conditions, 2429 events. 1378/2429 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 10166 event pairs, 378 based on Foata normal form. 0/2101 useless extension candidates. Maximal degree in co-relation 5072. Up to 1785 conditions per place. [2023-01-27 17:30:37,935 INFO L137 encePairwiseOnDemand]: 472/482 looper letters, 89 selfloop transitions, 17 changer transitions 9/124 dead transitions. [2023-01-27 17:30:37,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 590 flow [2023-01-27 17:30:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 17:30:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 17:30:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1467 transitions. [2023-01-27 17:30:37,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804460580912863 [2023-01-27 17:30:37,941 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1467 transitions. [2023-01-27 17:30:37,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1467 transitions. [2023-01-27 17:30:37,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:37,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1467 transitions. [2023-01-27 17:30:37,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 183.375) internal successors, (1467), 8 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,950 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,950 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 243 flow. Second operand 8 states and 1467 transitions. [2023-01-27 17:30:37,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 590 flow [2023-01-27 17:30:37,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 124 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 17:30:37,954 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 308 flow [2023-01-27 17:30:37,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=308, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2023-01-27 17:30:37,955 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 21 predicate places. [2023-01-27 17:30:37,955 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 308 flow [2023-01-27 17:30:37,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:37,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:37,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:37,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 17:30:37,956 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:37,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:37,957 INFO L85 PathProgramCache]: Analyzing trace with hash -917016712, now seen corresponding path program 2 times [2023-01-27 17:30:37,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:37,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825936276] [2023-01-27 17:30:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:37,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:38,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:38,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825936276] [2023-01-27 17:30:38,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825936276] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:38,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:38,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 17:30:38,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46990370] [2023-01-27 17:30:38,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:38,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 17:30:38,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:38,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 17:30:38,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-27 17:30:38,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 482 [2023-01-27 17:30:38,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 308 flow. Second operand has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:38,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:38,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 482 [2023-01-27 17:30:38,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:39,274 INFO L130 PetriNetUnfolder]: 1459/2574 cut-off events. [2023-01-27 17:30:39,274 INFO L131 PetriNetUnfolder]: For 350/350 co-relation queries the response was YES. [2023-01-27 17:30:39,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 2574 events. 1459/2574 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11062 event pairs, 469 based on Foata normal form. 0/2215 useless extension candidates. Maximal degree in co-relation 5558. Up to 1623 conditions per place. [2023-01-27 17:30:39,292 INFO L137 encePairwiseOnDemand]: 472/482 looper letters, 88 selfloop transitions, 19 changer transitions 8/124 dead transitions. [2023-01-27 17:30:39,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 124 transitions, 651 flow [2023-01-27 17:30:39,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 17:30:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 17:30:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1464 transitions. [2023-01-27 17:30:39,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3796680497925311 [2023-01-27 17:30:39,297 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1464 transitions. [2023-01-27 17:30:39,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1464 transitions. [2023-01-27 17:30:39,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:39,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1464 transitions. [2023-01-27 17:30:39,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:39,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:39,306 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 482.0) internal successors, (4338), 9 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:39,306 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 308 flow. Second operand 8 states and 1464 transitions. [2023-01-27 17:30:39,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 124 transitions, 651 flow [2023-01-27 17:30:39,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 124 transitions, 619 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-27 17:30:39,310 INFO L231 Difference]: Finished difference. Result has 88 places, 80 transitions, 351 flow [2023-01-27 17:30:39,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=351, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2023-01-27 17:30:39,312 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 25 predicate places. [2023-01-27 17:30:39,312 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 351 flow [2023-01-27 17:30:39,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:39,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:39,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:39,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 17:30:39,313 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:39,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:39,314 INFO L85 PathProgramCache]: Analyzing trace with hash -916987882, now seen corresponding path program 3 times [2023-01-27 17:30:39,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:39,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881986841] [2023-01-27 17:30:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:39,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:41,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:41,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881986841] [2023-01-27 17:30:41,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881986841] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:41,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:41,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 17:30:41,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427112019] [2023-01-27 17:30:41,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:41,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 17:30:41,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:41,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 17:30:41,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-27 17:30:41,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 482 [2023-01-27 17:30:41,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 351 flow. Second operand has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:41,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:41,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 482 [2023-01-27 17:30:41,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:41,746 INFO L130 PetriNetUnfolder]: 1446/2562 cut-off events. [2023-01-27 17:30:41,746 INFO L131 PetriNetUnfolder]: For 543/543 co-relation queries the response was YES. [2023-01-27 17:30:41,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5600 conditions, 2562 events. 1446/2562 cut-off events. For 543/543 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11107 event pairs, 406 based on Foata normal form. 0/2217 useless extension candidates. Maximal degree in co-relation 5583. Up to 1877 conditions per place. [2023-01-27 17:30:41,759 INFO L137 encePairwiseOnDemand]: 472/482 looper letters, 94 selfloop transitions, 18 changer transitions 10/130 dead transitions. [2023-01-27 17:30:41,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 130 transitions, 706 flow [2023-01-27 17:30:41,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 17:30:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 17:30:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1643 transitions. [2023-01-27 17:30:41,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37874596588289533 [2023-01-27 17:30:41,764 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1643 transitions. [2023-01-27 17:30:41,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1643 transitions. [2023-01-27 17:30:41,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:41,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1643 transitions. [2023-01-27 17:30:41,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.55555555555554) internal successors, (1643), 9 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:41,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 482.0) internal successors, (4820), 10 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:41,776 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 482.0) internal successors, (4820), 10 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:41,776 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 351 flow. Second operand 9 states and 1643 transitions. [2023-01-27 17:30:41,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 130 transitions, 706 flow [2023-01-27 17:30:41,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 130 transitions, 683 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-01-27 17:30:41,781 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 356 flow [2023-01-27 17:30:41,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=356, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2023-01-27 17:30:41,782 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 26 predicate places. [2023-01-27 17:30:41,784 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 356 flow [2023-01-27 17:30:41,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.4) internal successors, (1714), 10 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:41,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:41,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:41,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 17:30:41,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:41,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:41,797 INFO L85 PathProgramCache]: Analyzing trace with hash 546649345, now seen corresponding path program 1 times [2023-01-27 17:30:41,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:41,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616061833] [2023-01-27 17:30:41,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:41,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:41,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:41,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616061833] [2023-01-27 17:30:41,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616061833] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:41,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:41,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 17:30:41,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338652784] [2023-01-27 17:30:41,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:41,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 17:30:41,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 17:30:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 17:30:41,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 482 [2023-01-27 17:30:41,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:41,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:41,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 482 [2023-01-27 17:30:41,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:42,065 INFO L130 PetriNetUnfolder]: 888/1663 cut-off events. [2023-01-27 17:30:42,065 INFO L131 PetriNetUnfolder]: For 437/437 co-relation queries the response was YES. [2023-01-27 17:30:42,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 1663 events. 888/1663 cut-off events. For 437/437 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6927 event pairs, 166 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 3785. Up to 1180 conditions per place. [2023-01-27 17:30:42,073 INFO L137 encePairwiseOnDemand]: 476/482 looper letters, 71 selfloop transitions, 6 changer transitions 1/90 dead transitions. [2023-01-27 17:30:42,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 551 flow [2023-01-27 17:30:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 17:30:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 17:30:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 783 transitions. [2023-01-27 17:30:42,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5414937759336099 [2023-01-27 17:30:42,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 783 transitions. [2023-01-27 17:30:42,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 783 transitions. [2023-01-27 17:30:42,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:42,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 783 transitions. [2023-01-27 17:30:42,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 261.0) internal successors, (783), 3 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:42,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:42,080 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 482.0) internal successors, (1928), 4 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:42,080 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 356 flow. Second operand 3 states and 783 transitions. [2023-01-27 17:30:42,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 551 flow [2023-01-27 17:30:42,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 90 transitions, 499 flow, removed 1 selfloop flow, removed 9 redundant places. [2023-01-27 17:30:42,084 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 318 flow [2023-01-27 17:30:42,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-01-27 17:30:42,086 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2023-01-27 17:30:42,086 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 318 flow [2023-01-27 17:30:42,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:42,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:42,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:42,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 17:30:42,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:42,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:42,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1906929845, now seen corresponding path program 1 times [2023-01-27 17:30:42,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:42,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108535006] [2023-01-27 17:30:42,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:42,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:44,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:44,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108535006] [2023-01-27 17:30:44,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108535006] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:44,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:44,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-27 17:30:44,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660183323] [2023-01-27 17:30:44,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:44,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 17:30:44,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:44,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 17:30:44,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-01-27 17:30:44,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 482 [2023-01-27 17:30:44,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 318 flow. Second operand has 16 states, 16 states have (on average 174.1875) internal successors, (2787), 16 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:44,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:44,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 482 [2023-01-27 17:30:44,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:45,648 INFO L130 PetriNetUnfolder]: 1593/3015 cut-off events. [2023-01-27 17:30:45,649 INFO L131 PetriNetUnfolder]: For 396/400 co-relation queries the response was YES. [2023-01-27 17:30:45,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6720 conditions, 3015 events. 1593/3015 cut-off events. For 396/400 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 15281 event pairs, 326 based on Foata normal form. 1/2877 useless extension candidates. Maximal degree in co-relation 6704. Up to 1097 conditions per place. [2023-01-27 17:30:45,660 INFO L137 encePairwiseOnDemand]: 463/482 looper letters, 168 selfloop transitions, 42 changer transitions 14/232 dead transitions. [2023-01-27 17:30:45,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 232 transitions, 1166 flow [2023-01-27 17:30:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 17:30:45,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 17:30:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3831 transitions. [2023-01-27 17:30:45,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784825133372851 [2023-01-27 17:30:45,671 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3831 transitions. [2023-01-27 17:30:45,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3831 transitions. [2023-01-27 17:30:45,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:45,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3831 transitions. [2023-01-27 17:30:45,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 182.42857142857142) internal successors, (3831), 21 states have internal predecessors, (3831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:45,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 482.0) internal successors, (10604), 22 states have internal predecessors, (10604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:45,694 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 482.0) internal successors, (10604), 22 states have internal predecessors, (10604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:45,694 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 318 flow. Second operand 21 states and 3831 transitions. [2023-01-27 17:30:45,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 232 transitions, 1166 flow [2023-01-27 17:30:45,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 232 transitions, 1146 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 17:30:45,700 INFO L231 Difference]: Finished difference. Result has 108 places, 100 transitions, 535 flow [2023-01-27 17:30:45,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=535, PETRI_PLACES=108, PETRI_TRANSITIONS=100} [2023-01-27 17:30:45,701 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 45 predicate places. [2023-01-27 17:30:45,701 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 100 transitions, 535 flow [2023-01-27 17:30:45,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 174.1875) internal successors, (2787), 16 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:45,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:45,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:45,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 17:30:45,702 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:45,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:45,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1823393625, now seen corresponding path program 2 times [2023-01-27 17:30:45,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:45,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519308677] [2023-01-27 17:30:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:45,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:46,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:46,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519308677] [2023-01-27 17:30:46,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519308677] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:46,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:46,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 17:30:46,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192008906] [2023-01-27 17:30:46,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:46,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 17:30:46,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:46,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 17:30:46,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-01-27 17:30:46,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 482 [2023-01-27 17:30:46,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 100 transitions, 535 flow. Second operand has 11 states, 11 states have (on average 179.1818181818182) internal successors, (1971), 11 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:46,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:46,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 482 [2023-01-27 17:30:46,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:47,614 INFO L130 PetriNetUnfolder]: 1338/2509 cut-off events. [2023-01-27 17:30:47,615 INFO L131 PetriNetUnfolder]: For 788/790 co-relation queries the response was YES. [2023-01-27 17:30:47,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6144 conditions, 2509 events. 1338/2509 cut-off events. For 788/790 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 11809 event pairs, 405 based on Foata normal form. 28/2471 useless extension candidates. Maximal degree in co-relation 6120. Up to 893 conditions per place. [2023-01-27 17:30:47,625 INFO L137 encePairwiseOnDemand]: 468/482 looper letters, 113 selfloop transitions, 26 changer transitions 7/154 dead transitions. [2023-01-27 17:30:47,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 154 transitions, 946 flow [2023-01-27 17:30:47,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 17:30:47,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 17:30:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1708 transitions. [2023-01-27 17:30:47,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3937298294144767 [2023-01-27 17:30:47,631 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1708 transitions. [2023-01-27 17:30:47,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1708 transitions. [2023-01-27 17:30:47,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:47,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1708 transitions. [2023-01-27 17:30:47,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.77777777777777) internal successors, (1708), 9 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:47,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 482.0) internal successors, (4820), 10 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:47,641 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 482.0) internal successors, (4820), 10 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:47,641 INFO L175 Difference]: Start difference. First operand has 108 places, 100 transitions, 535 flow. Second operand 9 states and 1708 transitions. [2023-01-27 17:30:47,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 154 transitions, 946 flow [2023-01-27 17:30:47,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 154 transitions, 836 flow, removed 21 selfloop flow, removed 16 redundant places. [2023-01-27 17:30:47,648 INFO L231 Difference]: Finished difference. Result has 100 places, 96 transitions, 498 flow [2023-01-27 17:30:47,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=498, PETRI_PLACES=100, PETRI_TRANSITIONS=96} [2023-01-27 17:30:47,649 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 37 predicate places. [2023-01-27 17:30:47,649 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 96 transitions, 498 flow [2023-01-27 17:30:47,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 179.1818181818182) internal successors, (1971), 11 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:47,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:47,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:47,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 17:30:47,650 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:47,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:47,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1157294127, now seen corresponding path program 3 times [2023-01-27 17:30:47,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:47,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053848773] [2023-01-27 17:30:47,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:47,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:48,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:48,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053848773] [2023-01-27 17:30:48,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053848773] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:48,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:48,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 17:30:48,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181507043] [2023-01-27 17:30:48,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:48,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 17:30:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 17:30:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-01-27 17:30:48,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 482 [2023-01-27 17:30:48,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 96 transitions, 498 flow. Second operand has 12 states, 12 states have (on average 176.91666666666666) internal successors, (2123), 12 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:48,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:48,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 482 [2023-01-27 17:30:48,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:49,304 INFO L130 PetriNetUnfolder]: 1141/2151 cut-off events. [2023-01-27 17:30:49,304 INFO L131 PetriNetUnfolder]: For 777/777 co-relation queries the response was YES. [2023-01-27 17:30:49,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5430 conditions, 2151 events. 1141/2151 cut-off events. For 777/777 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9631 event pairs, 254 based on Foata normal form. 14/2103 useless extension candidates. Maximal degree in co-relation 5412. Up to 793 conditions per place. [2023-01-27 17:30:49,313 INFO L137 encePairwiseOnDemand]: 471/482 looper letters, 110 selfloop transitions, 25 changer transitions 11/154 dead transitions. [2023-01-27 17:30:49,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 154 transitions, 935 flow [2023-01-27 17:30:49,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 17:30:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 17:30:49,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2035 transitions. [2023-01-27 17:30:49,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38381742738589214 [2023-01-27 17:30:49,320 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2035 transitions. [2023-01-27 17:30:49,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2035 transitions. [2023-01-27 17:30:49,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:49,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2035 transitions. [2023-01-27 17:30:49,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 185.0) internal successors, (2035), 11 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:49,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 482.0) internal successors, (5784), 12 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:49,331 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 482.0) internal successors, (5784), 12 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:49,331 INFO L175 Difference]: Start difference. First operand has 100 places, 96 transitions, 498 flow. Second operand 11 states and 2035 transitions. [2023-01-27 17:30:49,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 154 transitions, 935 flow [2023-01-27 17:30:49,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 154 transitions, 912 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-27 17:30:49,338 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 551 flow [2023-01-27 17:30:49,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=551, PETRI_PLACES=108, PETRI_TRANSITIONS=97} [2023-01-27 17:30:49,339 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 45 predicate places. [2023-01-27 17:30:49,339 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 551 flow [2023-01-27 17:30:49,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 176.91666666666666) internal successors, (2123), 12 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:49,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:49,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:49,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 17:30:49,340 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:49,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1116139787, now seen corresponding path program 1 times [2023-01-27 17:30:49,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:49,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927740615] [2023-01-27 17:30:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:49,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:51,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927740615] [2023-01-27 17:30:51,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927740615] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:51,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:51,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-01-27 17:30:51,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116859333] [2023-01-27 17:30:51,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:51,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 17:30:51,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:51,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 17:30:51,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-01-27 17:30:51,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 482 [2023-01-27 17:30:51,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 97 transitions, 551 flow. Second operand has 15 states, 15 states have (on average 174.4) internal successors, (2616), 15 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:51,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:51,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 482 [2023-01-27 17:30:51,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:52,479 INFO L130 PetriNetUnfolder]: 1323/2495 cut-off events. [2023-01-27 17:30:52,479 INFO L131 PetriNetUnfolder]: For 1388/1390 co-relation queries the response was YES. [2023-01-27 17:30:52,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6382 conditions, 2495 events. 1323/2495 cut-off events. For 1388/1390 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 11684 event pairs, 527 based on Foata normal form. 0/2421 useless extension candidates. Maximal degree in co-relation 6361. Up to 1474 conditions per place. [2023-01-27 17:30:52,489 INFO L137 encePairwiseOnDemand]: 469/482 looper letters, 135 selfloop transitions, 27 changer transitions 11/181 dead transitions. [2023-01-27 17:30:52,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 181 transitions, 1117 flow [2023-01-27 17:30:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 17:30:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 17:30:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2213 transitions. [2023-01-27 17:30:52,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38260719225449513 [2023-01-27 17:30:52,500 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2213 transitions. [2023-01-27 17:30:52,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2213 transitions. [2023-01-27 17:30:52,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:52,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2213 transitions. [2023-01-27 17:30:52,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 184.41666666666666) internal successors, (2213), 12 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:52,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:52,513 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:52,513 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 551 flow. Second operand 12 states and 2213 transitions. [2023-01-27 17:30:52,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 181 transitions, 1117 flow [2023-01-27 17:30:52,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 181 transitions, 1086 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-01-27 17:30:52,521 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 628 flow [2023-01-27 17:30:52,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=628, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2023-01-27 17:30:52,522 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 52 predicate places. [2023-01-27 17:30:52,522 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 628 flow [2023-01-27 17:30:52,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 174.4) internal successors, (2616), 15 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:52,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:52,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:52,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 17:30:52,523 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:52,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:52,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1441368751, now seen corresponding path program 2 times [2023-01-27 17:30:52,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:52,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645258956] [2023-01-27 17:30:52,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:52,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:54,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:54,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645258956] [2023-01-27 17:30:54,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645258956] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:54,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:54,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-01-27 17:30:54,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993671386] [2023-01-27 17:30:54,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:54,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 17:30:54,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:54,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 17:30:54,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-01-27 17:30:54,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 482 [2023-01-27 17:30:54,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 628 flow. Second operand has 15 states, 15 states have (on average 175.4) internal successors, (2631), 15 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:54,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:54,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 482 [2023-01-27 17:30:54,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:55,336 INFO L130 PetriNetUnfolder]: 1522/2894 cut-off events. [2023-01-27 17:30:55,336 INFO L131 PetriNetUnfolder]: For 1804/1804 co-relation queries the response was YES. [2023-01-27 17:30:55,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7428 conditions, 2894 events. 1522/2894 cut-off events. For 1804/1804 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14272 event pairs, 362 based on Foata normal form. 8/2828 useless extension candidates. Maximal degree in co-relation 7404. Up to 921 conditions per place. [2023-01-27 17:30:55,345 INFO L137 encePairwiseOnDemand]: 469/482 looper letters, 134 selfloop transitions, 32 changer transitions 11/185 dead transitions. [2023-01-27 17:30:55,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 185 transitions, 1204 flow [2023-01-27 17:30:55,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 17:30:55,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 17:30:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2221 transitions. [2023-01-27 17:30:55,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38399031811894885 [2023-01-27 17:30:55,348 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2221 transitions. [2023-01-27 17:30:55,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2221 transitions. [2023-01-27 17:30:55,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:55,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2221 transitions. [2023-01-27 17:30:55,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.08333333333334) internal successors, (2221), 12 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:55,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:55,359 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:55,359 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 628 flow. Second operand 12 states and 2221 transitions. [2023-01-27 17:30:55,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 185 transitions, 1204 flow [2023-01-27 17:30:55,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 185 transitions, 1160 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-01-27 17:30:55,368 INFO L231 Difference]: Finished difference. Result has 122 places, 106 transitions, 705 flow [2023-01-27 17:30:55,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=705, PETRI_PLACES=122, PETRI_TRANSITIONS=106} [2023-01-27 17:30:55,368 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 59 predicate places. [2023-01-27 17:30:55,368 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 106 transitions, 705 flow [2023-01-27 17:30:55,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 175.4) internal successors, (2631), 15 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:55,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:55,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:55,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 17:30:55,370 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:55,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:55,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1674967413, now seen corresponding path program 3 times [2023-01-27 17:30:55,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:55,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025699531] [2023-01-27 17:30:55,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:55,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 17:30:59,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 17:30:59,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 17:30:59,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025699531] [2023-01-27 17:30:59,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025699531] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 17:30:59,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 17:30:59,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-27 17:30:59,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38283104] [2023-01-27 17:30:59,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 17:30:59,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 17:30:59,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 17:30:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 17:30:59,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-01-27 17:30:59,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 482 [2023-01-27 17:30:59,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 106 transitions, 705 flow. Second operand has 16 states, 16 states have (on average 174.25) internal successors, (2788), 16 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:59,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 17:30:59,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 482 [2023-01-27 17:30:59,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 17:30:59,816 INFO L130 PetriNetUnfolder]: 1692/3219 cut-off events. [2023-01-27 17:30:59,816 INFO L131 PetriNetUnfolder]: For 2508/2508 co-relation queries the response was YES. [2023-01-27 17:30:59,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8400 conditions, 3219 events. 1692/3219 cut-off events. For 2508/2508 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 15893 event pairs, 187 based on Foata normal form. 8/3144 useless extension candidates. Maximal degree in co-relation 8373. Up to 882 conditions per place. [2023-01-27 17:30:59,827 INFO L137 encePairwiseOnDemand]: 470/482 looper letters, 135 selfloop transitions, 33 changer transitions 11/187 dead transitions. [2023-01-27 17:30:59,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 187 transitions, 1275 flow [2023-01-27 17:30:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 17:30:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 17:30:59,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2209 transitions. [2023-01-27 17:30:59,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819156293222683 [2023-01-27 17:30:59,832 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2209 transitions. [2023-01-27 17:30:59,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2209 transitions. [2023-01-27 17:30:59,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 17:30:59,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2209 transitions. [2023-01-27 17:30:59,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 184.08333333333334) internal successors, (2209), 12 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:59,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:59,842 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 482.0) internal successors, (6266), 13 states have internal predecessors, (6266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:59,842 INFO L175 Difference]: Start difference. First operand has 122 places, 106 transitions, 705 flow. Second operand 12 states and 2209 transitions. [2023-01-27 17:30:59,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 187 transitions, 1275 flow [2023-01-27 17:30:59,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 187 transitions, 1217 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-01-27 17:30:59,854 INFO L231 Difference]: Finished difference. Result has 127 places, 109 transitions, 761 flow [2023-01-27 17:30:59,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=482, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=761, PETRI_PLACES=127, PETRI_TRANSITIONS=109} [2023-01-27 17:30:59,854 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 64 predicate places. [2023-01-27 17:30:59,854 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 109 transitions, 761 flow [2023-01-27 17:30:59,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 174.25) internal successors, (2788), 16 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 17:30:59,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 17:30:59,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 17:30:59,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 17:30:59,856 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 17:30:59,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 17:30:59,856 INFO L85 PathProgramCache]: Analyzing trace with hash 241474651, now seen corresponding path program 1 times [2023-01-27 17:30:59,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 17:30:59,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235708094] [2023-01-27 17:30:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 17:30:59,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 17:30:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-01-27 17:43:34,705 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 17:43:34,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 17:43:34,726 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:152) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:260) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:237) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:848) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:776) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:352) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-01-27 17:43:34,728 INFO L158 Benchmark]: Toolchain (without parser) took 793649.23ms. Allocated memory was 348.1MB in the beginning and 7.5GB in the end (delta: 7.2GB). Free memory was 286.5MB in the beginning and 4.1GB in the end (delta: -3.8GB). Peak memory consumption was 6.8GB. Max. memory is 16.0GB. [2023-01-27 17:43:34,729 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory is still 295.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 17:43:34,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.86ms. Allocated memory was 348.1MB in the beginning and 480.2MB in the end (delta: 132.1MB). Free memory was 286.2MB in the beginning and 443.5MB in the end (delta: -157.3MB). Peak memory consumption was 34.1MB. Max. memory is 16.0GB. [2023-01-27 17:43:34,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.93ms. Allocated memory is still 480.2MB. Free memory was 443.5MB in the beginning and 440.1MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 17:43:34,729 INFO L158 Benchmark]: Boogie Preprocessor took 58.61ms. Allocated memory is still 480.2MB. Free memory was 440.1MB in the beginning and 438.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 17:43:34,730 INFO L158 Benchmark]: RCFGBuilder took 657.85ms. Allocated memory is still 480.2MB. Free memory was 437.2MB in the beginning and 413.1MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-27 17:43:34,730 INFO L158 Benchmark]: TraceAbstraction took 792233.58ms. Allocated memory was 480.2MB in the beginning and 7.5GB in the end (delta: 7.0GB). Free memory was 412.0MB in the beginning and 4.1GB in the end (delta: -3.7GB). Peak memory consumption was 6.8GB. Max. memory is 16.0GB. [2023-01-27 17:43:34,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory is still 295.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 611.86ms. Allocated memory was 348.1MB in the beginning and 480.2MB in the end (delta: 132.1MB). Free memory was 286.2MB in the beginning and 443.5MB in the end (delta: -157.3MB). Peak memory consumption was 34.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 74.93ms. Allocated memory is still 480.2MB. Free memory was 443.5MB in the beginning and 440.1MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 58.61ms. Allocated memory is still 480.2MB. Free memory was 440.1MB in the beginning and 438.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 657.85ms. Allocated memory is still 480.2MB. Free memory was 437.2MB in the beginning and 413.1MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 792233.58ms. Allocated memory was 480.2MB in the beginning and 7.5GB in the end (delta: 7.0GB). Free memory was 412.0MB in the beginning and 4.1GB in the end (delta: -3.7GB). Peak memory consumption was 6.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.7s, 247 PlacesBefore, 63 PlacesAfterwards, 255 TransitionsBefore, 67 TransitionsAfterwards, 15864 CoEnabledTransitionPairs, 8 FixpointIterations, 68 TrivialSequentialCompositions, 126 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 216 TotalNumberOfCompositions, 35874 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17452, independent: 16741, independent conditional: 0, independent unconditional: 16741, dependent: 711, dependent conditional: 0, dependent unconditional: 711, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8554, independent: 8442, independent conditional: 0, independent unconditional: 8442, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 17452, independent: 8299, independent conditional: 0, independent unconditional: 8299, dependent: 599, dependent conditional: 0, dependent unconditional: 599, unknown: 8554, unknown conditional: 0, unknown unconditional: 8554] , Statistics on independence cache: Total cache size (in pairs): 458, Positive cache size: 413, Positive conditional cache size: 0, Positive unconditional cache size: 413, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkResolutionNode(Interpolator.java:275) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown