/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/queue.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:39:16,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:39:16,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:39:16,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-27 23:39:16,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:39:16,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:39:16,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:39:16,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:39:16,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:39:16,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:39:16,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:39:16,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:39:16,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:39:16,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:39:16,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:39:16,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:39:16,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:39:16,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:39:16,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:39:16,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:39:16,271 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 23:39:16,293 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:39:16,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:39:16,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:39:16,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:39:16,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:39:16,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:39:16,295 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:39:16,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:39:16,296 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:39:16,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:39:16,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:39:16,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:39:16,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:39:16,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:39:16,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:39:16,297 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:39:16,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:39:16,297 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:39:16,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:39:16,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:39:16,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:39:16,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:39:16,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:39:16,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:39:16,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:39:16,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:39:16,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:39:16,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:39:16,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:39:16,299 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:39:16,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:39:16,300 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:39:16,480 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:39:16,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:39:16,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:39:16,508 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:39:16,509 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:39:16,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue.i [2023-01-27 23:39:17,662 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:39:17,882 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:39:17,883 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue.i [2023-01-27 23:39:17,898 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/900519290/e551e5edbfb7474896fd7d900bb4fd15/FLAG8fc5e1fc6 [2023-01-27 23:39:17,914 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/900519290/e551e5edbfb7474896fd7d900bb4fd15 [2023-01-27 23:39:17,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:39:17,919 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:39:17,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:39:17,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:39:17,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:39:17,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3507c1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:17, skipping insertion in model container [2023-01-27 23:39:17,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:39:17" (1/1) ... [2023-01-27 23:39:17,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:39:17,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:39:18,345 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 23:39:18,352 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 23:39:18,357 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 23:39:18,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:39:18,372 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:39:18,411 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 23:39:18,413 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 23:39:18,415 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 23:39:18,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:39:18,461 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:39:18,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18 WrapperNode [2023-01-27 23:39:18,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:39:18,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:39:18,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:39:18,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:39:18,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18" (1/1) ... [2023-01-27 23:39:18,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18" (1/1) ... [2023-01-27 23:39:18,512 INFO L138 Inliner]: procedures = 274, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 252 [2023-01-27 23:39:18,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:39:18,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:39:18,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:39:18,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:39:18,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18" (1/1) ... [2023-01-27 23:39:18,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18" (1/1) ... [2023-01-27 23:39:18,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18" (1/1) ... [2023-01-27 23:39:18,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18" (1/1) ... [2023-01-27 23:39:18,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18" (1/1) ... [2023-01-27 23:39:18,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18" (1/1) ... [2023-01-27 23:39:18,558 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18" (1/1) ... [2023-01-27 23:39:18,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18" (1/1) ... [2023-01-27 23:39:18,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:39:18,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:39:18,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:39:18,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:39:18,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18" (1/1) ... [2023-01-27 23:39:18,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:39:18,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:39:18,593 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 23:39:18,594 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 23:39:18,639 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-27 23:39:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-27 23:39:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-27 23:39:18,641 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-27 23:39:18,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:39:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:39:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:39:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:39:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 23:39:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:39:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:39:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:39:18,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:39:18,643 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 23:39:18,830 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:39:18,831 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:39:19,192 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:39:19,201 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:39:19,201 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 23:39:19,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:39:19 BoogieIcfgContainer [2023-01-27 23:39:19,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:39:19,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:39:19,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:39:19,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:39:19,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:39:17" (1/3) ... [2023-01-27 23:39:19,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427e2468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:39:19, skipping insertion in model container [2023-01-27 23:39:19,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:39:18" (2/3) ... [2023-01-27 23:39:19,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427e2468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:39:19, skipping insertion in model container [2023-01-27 23:39:19,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:39:19" (3/3) ... [2023-01-27 23:39:19,210 INFO L112 eAbstractionObserver]: Analyzing ICFG queue.i [2023-01-27 23:39:19,223 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:39:19,224 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-01-27 23:39:19,224 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:39:19,364 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:39:19,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 266 transitions, 548 flow [2023-01-27 23:39:19,499 INFO L130 PetriNetUnfolder]: 15/264 cut-off events. [2023-01-27 23:39:19,499 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:19,508 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 23:39:19,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 266 transitions, 548 flow [2023-01-27 23:39:19,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 255 transitions, 519 flow [2023-01-27 23:39:19,516 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:39:19,531 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 255 transitions, 519 flow [2023-01-27 23:39:19,534 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 255 transitions, 519 flow [2023-01-27 23:39:19,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 255 transitions, 519 flow [2023-01-27 23:39:19,597 INFO L130 PetriNetUnfolder]: 15/255 cut-off events. [2023-01-27 23:39:19,597 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:39:19,602 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 23:39:19,610 INFO L119 LiptonReduction]: Number of co-enabled transitions 15864 [2023-01-27 23:39:27,452 INFO L134 LiptonReduction]: Checked pairs total: 35874 [2023-01-27 23:39:27,452 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-01-27 23:39:27,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:39:27,470 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;@46dd3678, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:39:27,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-01-27 23:39:27,472 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-01-27 23:39:27,472 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 23:39:27,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:27,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-01-27 23:39:27,473 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 23:39:27,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:27,477 INFO L85 PathProgramCache]: Analyzing trace with hash 31999, now seen corresponding path program 1 times [2023-01-27 23:39:27,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:27,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633226050] [2023-01-27 23:39:27,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:27,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:39:27,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:27,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633226050] [2023-01-27 23:39:27,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633226050] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:27,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:27,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 23:39:27,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884981103] [2023-01-27 23:39:27,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:27,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-27 23:39:27,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:27,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-27 23:39:27,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-27 23:39:27,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 482 [2023-01-27 23:39:27,631 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 23:39:27,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:27,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 482 [2023-01-27 23:39:27,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:27,904 INFO L130 PetriNetUnfolder]: 1489/2562 cut-off events. [2023-01-27 23:39:27,904 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-01-27 23:39:27,907 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 23:39:27,919 INFO L137 encePairwiseOnDemand]: 479/482 looper letters, 52 selfloop transitions, 0 changer transitions 0/62 dead transitions. [2023-01-27 23:39:27,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 237 flow [2023-01-27 23:39:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-27 23:39:27,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-27 23:39:27,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 561 transitions. [2023-01-27 23:39:27,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819502074688797 [2023-01-27 23:39:27,942 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 561 transitions. [2023-01-27 23:39:27,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 561 transitions. [2023-01-27 23:39:27,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:27,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 561 transitions. [2023-01-27 23:39:27,952 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 23:39:27,959 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 23:39:27,960 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 23:39:27,961 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 143 flow. Second operand 2 states and 561 transitions. [2023-01-27 23:39:27,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 237 flow [2023-01-27 23:39:27,969 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 23:39:27,971 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 128 flow [2023-01-27 23:39:27,972 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 23:39:27,985 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2023-01-27 23:39:27,985 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 128 flow [2023-01-27 23:39:27,985 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 23:39:27,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:27,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:27,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:39:27,986 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 23:39:27,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:27,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1793584973, now seen corresponding path program 1 times [2023-01-27 23:39:27,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:27,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816538954] [2023-01-27 23:39:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:27,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:28,206 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 23:39:28,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:28,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816538954] [2023-01-27 23:39:28,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816538954] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:28,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:28,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:39:28,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516246681] [2023-01-27 23:39:28,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:28,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:28,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:28,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:28,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:28,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 482 [2023-01-27 23:39:28,210 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 23:39:28,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:28,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 482 [2023-01-27 23:39:28,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:28,459 INFO L130 PetriNetUnfolder]: 1457/2528 cut-off events. [2023-01-27 23:39:28,459 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:39:28,462 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 23:39:28,471 INFO L137 encePairwiseOnDemand]: 478/482 looper letters, 67 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-01-27 23:39:28,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 306 flow [2023-01-27 23:39:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 812 transitions. [2023-01-27 23:39:28,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5615491009681881 [2023-01-27 23:39:28,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 812 transitions. [2023-01-27 23:39:28,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 812 transitions. [2023-01-27 23:39:28,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:28,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 812 transitions. [2023-01-27 23:39:28,475 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 23:39:28,478 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 23:39:28,479 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 23:39:28,479 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 128 flow. Second operand 3 states and 812 transitions. [2023-01-27 23:39:28,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 306 flow [2023-01-27 23:39:28,480 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 23:39:28,481 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 132 flow [2023-01-27 23:39:28,481 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 23:39:28,482 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2023-01-27 23:39:28,482 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 132 flow [2023-01-27 23:39:28,483 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 23:39:28,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:28,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:28,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:39:28,483 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 23:39:28,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:28,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1351646121, now seen corresponding path program 1 times [2023-01-27 23:39:28,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:28,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820857918] [2023-01-27 23:39:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:28,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:29,992 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 23:39:29,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:29,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820857918] [2023-01-27 23:39:29,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820857918] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:29,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:29,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 23:39:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731899475] [2023-01-27 23:39:29,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:29,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:39:29,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:29,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:39:29,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:39:30,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 482 [2023-01-27 23:39:30,001 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 23:39:30,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:30,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 482 [2023-01-27 23:39:30,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:30,533 INFO L130 PetriNetUnfolder]: 1557/2661 cut-off events. [2023-01-27 23:39:30,533 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-01-27 23:39:30,537 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 23:39:30,546 INFO L137 encePairwiseOnDemand]: 475/482 looper letters, 56 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2023-01-27 23:39:30,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 288 flow [2023-01-27 23:39:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:39:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:39:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1176 transitions. [2023-01-27 23:39:30,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066390041493776 [2023-01-27 23:39:30,550 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1176 transitions. [2023-01-27 23:39:30,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1176 transitions. [2023-01-27 23:39:30,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:30,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1176 transitions. [2023-01-27 23:39:30,553 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 23:39:30,557 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 23:39:30,559 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 23:39:30,559 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 132 flow. Second operand 6 states and 1176 transitions. [2023-01-27 23:39:30,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 288 flow [2023-01-27 23:39:30,561 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 23:39:30,563 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 184 flow [2023-01-27 23:39:30,563 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 23:39:30,564 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 5 predicate places. [2023-01-27 23:39:30,564 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 184 flow [2023-01-27 23:39:30,565 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 23:39:30,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:30,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:30,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:39:30,566 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 23:39:30,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:30,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1063417523, now seen corresponding path program 1 times [2023-01-27 23:39:30,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:30,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975381175] [2023-01-27 23:39:30,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:30,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:31,279 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 23:39:31,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:31,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975381175] [2023-01-27 23:39:31,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975381175] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:31,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:31,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:39:31,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099114195] [2023-01-27 23:39:31,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:31,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:39:31,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:31,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:39:31,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-01-27 23:39:31,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 482 [2023-01-27 23:39:31,284 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 23:39:31,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:31,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 482 [2023-01-27 23:39:31,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:31,660 INFO L130 PetriNetUnfolder]: 1732/2919 cut-off events. [2023-01-27 23:39:31,660 INFO L131 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2023-01-27 23:39:31,664 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 23:39:31,675 INFO L137 encePairwiseOnDemand]: 476/482 looper letters, 92 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2023-01-27 23:39:31,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 484 flow [2023-01-27 23:39:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:39:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:39:31,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 998 transitions. [2023-01-27 23:39:31,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4141078838174274 [2023-01-27 23:39:31,678 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 998 transitions. [2023-01-27 23:39:31,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 998 transitions. [2023-01-27 23:39:31,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:31,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 998 transitions. [2023-01-27 23:39:31,681 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 23:39:31,685 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 23:39:31,686 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 23:39:31,686 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 184 flow. Second operand 5 states and 998 transitions. [2023-01-27 23:39:31,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 484 flow [2023-01-27 23:39:31,689 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 23:39:31,690 INFO L231 Difference]: Finished difference. Result has 75 places, 75 transitions, 246 flow [2023-01-27 23:39:31,690 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 23:39:31,691 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 12 predicate places. [2023-01-27 23:39:31,691 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 75 transitions, 246 flow [2023-01-27 23:39:31,692 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 23:39:31,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:31,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:31,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:39:31,693 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 23:39:31,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:31,693 INFO L85 PathProgramCache]: Analyzing trace with hash -306674726, now seen corresponding path program 1 times [2023-01-27 23:39:31,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:31,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959173038] [2023-01-27 23:39:31,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:31,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:32,395 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 23:39:32,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:32,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959173038] [2023-01-27 23:39:32,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959173038] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:32,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:32,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 23:39:32,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174003680] [2023-01-27 23:39:32,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:32,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 23:39:32,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:32,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 23:39:32,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-27 23:39:32,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 482 [2023-01-27 23:39:32,401 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 23:39:32,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:32,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 482 [2023-01-27 23:39:32,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:32,841 INFO L130 PetriNetUnfolder]: 1737/2937 cut-off events. [2023-01-27 23:39:32,842 INFO L131 PetriNetUnfolder]: For 646/646 co-relation queries the response was YES. [2023-01-27 23:39:32,847 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 23:39:32,859 INFO L137 encePairwiseOnDemand]: 472/482 looper letters, 70 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2023-01-27 23:39:32,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 93 transitions, 459 flow [2023-01-27 23:39:32,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 23:39:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 23:39:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1471 transitions. [2023-01-27 23:39:32,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38148340248962653 [2023-01-27 23:39:32,864 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1471 transitions. [2023-01-27 23:39:32,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1471 transitions. [2023-01-27 23:39:32,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:32,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1471 transitions. [2023-01-27 23:39:32,869 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 23:39:32,875 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 23:39:32,876 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 23:39:32,876 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 246 flow. Second operand 8 states and 1471 transitions. [2023-01-27 23:39:32,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 93 transitions, 459 flow [2023-01-27 23:39:32,881 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 23:39:32,883 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 312 flow [2023-01-27 23:39:32,883 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 23:39:32,885 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 22 predicate places. [2023-01-27 23:39:32,885 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 312 flow [2023-01-27 23:39:32,886 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 23:39:32,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:32,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:32,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 23:39:32,886 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 23:39:32,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1111539889, now seen corresponding path program 1 times [2023-01-27 23:39:32,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:32,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121876263] [2023-01-27 23:39:32,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:32,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:32,947 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 23:39:32,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:32,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121876263] [2023-01-27 23:39:32,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121876263] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:32,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:32,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:39:32,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953317136] [2023-01-27 23:39:32,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:32,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:32,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:32,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:32,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:32,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 482 [2023-01-27 23:39:32,955 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 23:39:32,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:32,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 482 [2023-01-27 23:39:32,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:33,185 INFO L130 PetriNetUnfolder]: 1303/2269 cut-off events. [2023-01-27 23:39:33,185 INFO L131 PetriNetUnfolder]: For 293/293 co-relation queries the response was YES. [2023-01-27 23:39:33,190 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 23:39:33,198 INFO L137 encePairwiseOnDemand]: 478/482 looper letters, 86 selfloop transitions, 3 changer transitions 1/99 dead transitions. [2023-01-27 23:39:33,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 99 transitions, 516 flow [2023-01-27 23:39:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 819 transitions. [2023-01-27 23:39:33,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5663900414937759 [2023-01-27 23:39:33,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 819 transitions. [2023-01-27 23:39:33,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 819 transitions. [2023-01-27 23:39:33,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:33,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 819 transitions. [2023-01-27 23:39:33,203 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 23:39:33,205 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 23:39:33,205 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 23:39:33,206 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 312 flow. Second operand 3 states and 819 transitions. [2023-01-27 23:39:33,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 99 transitions, 516 flow [2023-01-27 23:39:33,209 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 23:39:33,212 INFO L231 Difference]: Finished difference. Result has 76 places, 75 transitions, 243 flow [2023-01-27 23:39:33,212 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 23:39:33,214 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2023-01-27 23:39:33,214 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 75 transitions, 243 flow [2023-01-27 23:39:33,214 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 23:39:33,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:33,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:33,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 23:39:33,215 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 23:39:33,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:33,215 INFO L85 PathProgramCache]: Analyzing trace with hash 38477220, now seen corresponding path program 1 times [2023-01-27 23:39:33,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:33,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741548157] [2023-01-27 23:39:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:33,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:34,130 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 23:39:34,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:34,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741548157] [2023-01-27 23:39:34,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741548157] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:34,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:34,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 23:39:34,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125358502] [2023-01-27 23:39:34,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:34,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:39:34,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:34,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:39:34,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:39:34,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 482 [2023-01-27 23:39:34,139 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 23:39:34,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:34,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 482 [2023-01-27 23:39:34,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:34,797 INFO L130 PetriNetUnfolder]: 1378/2429 cut-off events. [2023-01-27 23:39:34,797 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2023-01-27 23:39:34,801 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 23:39:34,809 INFO L137 encePairwiseOnDemand]: 472/482 looper letters, 89 selfloop transitions, 17 changer transitions 9/124 dead transitions. [2023-01-27 23:39:34,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 124 transitions, 590 flow [2023-01-27 23:39:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 23:39:34,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 23:39:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1467 transitions. [2023-01-27 23:39:34,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804460580912863 [2023-01-27 23:39:34,813 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1467 transitions. [2023-01-27 23:39:34,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1467 transitions. [2023-01-27 23:39:34,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:34,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1467 transitions. [2023-01-27 23:39:34,816 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 23:39:34,821 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 23:39:34,822 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 23:39:34,822 INFO L175 Difference]: Start difference. First operand has 76 places, 75 transitions, 243 flow. Second operand 8 states and 1467 transitions. [2023-01-27 23:39:34,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 124 transitions, 590 flow [2023-01-27 23:39:34,825 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 23:39:34,826 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 308 flow [2023-01-27 23:39:34,827 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 23:39:34,828 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 21 predicate places. [2023-01-27 23:39:34,828 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 308 flow [2023-01-27 23:39:34,829 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 23:39:34,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:34,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:34,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 23:39:34,829 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 23:39:34,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:34,829 INFO L85 PathProgramCache]: Analyzing trace with hash -917016712, now seen corresponding path program 2 times [2023-01-27 23:39:34,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:34,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307332513] [2023-01-27 23:39:34,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:34,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:35,525 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 23:39:35,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:35,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307332513] [2023-01-27 23:39:35,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307332513] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:35,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:35,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 23:39:35,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389087699] [2023-01-27 23:39:35,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:35,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:39:35,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:35,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:39:35,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:39:35,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 482 [2023-01-27 23:39:35,531 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 23:39:35,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:35,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 482 [2023-01-27 23:39:35,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:36,101 INFO L130 PetriNetUnfolder]: 1459/2574 cut-off events. [2023-01-27 23:39:36,102 INFO L131 PetriNetUnfolder]: For 350/350 co-relation queries the response was YES. [2023-01-27 23:39:36,107 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 23:39:36,117 INFO L137 encePairwiseOnDemand]: 472/482 looper letters, 88 selfloop transitions, 19 changer transitions 8/124 dead transitions. [2023-01-27 23:39:36,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 124 transitions, 651 flow [2023-01-27 23:39:36,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 23:39:36,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 23:39:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1464 transitions. [2023-01-27 23:39:36,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3796680497925311 [2023-01-27 23:39:36,123 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1464 transitions. [2023-01-27 23:39:36,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1464 transitions. [2023-01-27 23:39:36,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:36,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1464 transitions. [2023-01-27 23:39:36,126 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 23:39:36,130 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 23:39:36,132 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 23:39:36,132 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 308 flow. Second operand 8 states and 1464 transitions. [2023-01-27 23:39:36,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 124 transitions, 651 flow [2023-01-27 23:39:36,135 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 23:39:36,136 INFO L231 Difference]: Finished difference. Result has 88 places, 80 transitions, 351 flow [2023-01-27 23:39:36,136 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 23:39:36,139 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 25 predicate places. [2023-01-27 23:39:36,139 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 351 flow [2023-01-27 23:39:36,140 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 23:39:36,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:36,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:39:36,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 23:39:36,140 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 23:39:36,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash -916987882, now seen corresponding path program 3 times [2023-01-27 23:39:36,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:36,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389570547] [2023-01-27 23:39:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:36,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:37,659 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 23:39:37,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:37,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389570547] [2023-01-27 23:39:37,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389570547] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:37,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:37,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 23:39:37,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887680581] [2023-01-27 23:39:37,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:37,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:39:37,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:37,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:39:37,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:39:37,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 482 [2023-01-27 23:39:37,664 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 23:39:37,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:37,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 482 [2023-01-27 23:39:37,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:38,373 INFO L130 PetriNetUnfolder]: 1446/2562 cut-off events. [2023-01-27 23:39:38,373 INFO L131 PetriNetUnfolder]: For 543/543 co-relation queries the response was YES. [2023-01-27 23:39:38,378 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 23:39:38,384 INFO L137 encePairwiseOnDemand]: 472/482 looper letters, 94 selfloop transitions, 18 changer transitions 10/130 dead transitions. [2023-01-27 23:39:38,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 130 transitions, 706 flow [2023-01-27 23:39:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1643 transitions. [2023-01-27 23:39:38,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37874596588289533 [2023-01-27 23:39:38,390 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1643 transitions. [2023-01-27 23:39:38,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1643 transitions. [2023-01-27 23:39:38,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:38,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1643 transitions. [2023-01-27 23:39:38,395 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 23:39:38,400 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 23:39:38,401 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 23:39:38,401 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 351 flow. Second operand 9 states and 1643 transitions. [2023-01-27 23:39:38,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 130 transitions, 706 flow [2023-01-27 23:39:38,404 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 23:39:38,406 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 356 flow [2023-01-27 23:39:38,406 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 23:39:38,407 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 26 predicate places. [2023-01-27 23:39:38,409 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 356 flow [2023-01-27 23:39:38,420 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 23:39:38,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:38,421 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 23:39:38,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 23:39:38,421 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 23:39:38,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:38,421 INFO L85 PathProgramCache]: Analyzing trace with hash 546649345, now seen corresponding path program 1 times [2023-01-27 23:39:38,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:38,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725736857] [2023-01-27 23:39:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:38,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:38,520 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 23:39:38,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:38,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725736857] [2023-01-27 23:39:38,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725736857] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:38,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:38,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:39:38,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071024539] [2023-01-27 23:39:38,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:38,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:39:38,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:39:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:39:38,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 482 [2023-01-27 23:39:38,523 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 23:39:38,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:38,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 482 [2023-01-27 23:39:38,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:38,689 INFO L130 PetriNetUnfolder]: 888/1663 cut-off events. [2023-01-27 23:39:38,689 INFO L131 PetriNetUnfolder]: For 437/437 co-relation queries the response was YES. [2023-01-27 23:39:38,692 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 23:39:38,696 INFO L137 encePairwiseOnDemand]: 476/482 looper letters, 71 selfloop transitions, 6 changer transitions 1/90 dead transitions. [2023-01-27 23:39:38,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 551 flow [2023-01-27 23:39:38,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:39:38,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:39:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 783 transitions. [2023-01-27 23:39:38,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5414937759336099 [2023-01-27 23:39:38,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 783 transitions. [2023-01-27 23:39:38,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 783 transitions. [2023-01-27 23:39:38,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:38,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 783 transitions. [2023-01-27 23:39:38,701 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 23:39:38,702 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 23:39:38,703 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 23:39:38,703 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 356 flow. Second operand 3 states and 783 transitions. [2023-01-27 23:39:38,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 551 flow [2023-01-27 23:39:38,705 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 23:39:38,707 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 318 flow [2023-01-27 23:39:38,707 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 23:39:38,708 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 19 predicate places. [2023-01-27 23:39:38,708 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 318 flow [2023-01-27 23:39:38,708 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 23:39:38,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:38,709 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 23:39:38,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 23:39:38,709 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 23:39:38,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:38,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1906929845, now seen corresponding path program 1 times [2023-01-27 23:39:38,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:38,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144309538] [2023-01-27 23:39:38,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:38,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:40,697 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 23:39:40,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:40,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144309538] [2023-01-27 23:39:40,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144309538] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:40,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:40,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-27 23:39:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319984114] [2023-01-27 23:39:40,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:40,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 23:39:40,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 23:39:40,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-01-27 23:39:40,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 482 [2023-01-27 23:39:40,703 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 23:39:40,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:40,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 482 [2023-01-27 23:39:40,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:42,065 INFO L130 PetriNetUnfolder]: 1593/3015 cut-off events. [2023-01-27 23:39:42,066 INFO L131 PetriNetUnfolder]: For 396/400 co-relation queries the response was YES. [2023-01-27 23:39:42,072 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 23:39:42,079 INFO L137 encePairwiseOnDemand]: 463/482 looper letters, 168 selfloop transitions, 42 changer transitions 14/232 dead transitions. [2023-01-27 23:39:42,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 232 transitions, 1166 flow [2023-01-27 23:39:42,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 23:39:42,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 23:39:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3831 transitions. [2023-01-27 23:39:42,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784825133372851 [2023-01-27 23:39:42,088 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3831 transitions. [2023-01-27 23:39:42,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3831 transitions. [2023-01-27 23:39:42,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:42,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3831 transitions. [2023-01-27 23:39:42,096 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 23:39:42,107 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 23:39:42,109 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 23:39:42,109 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 318 flow. Second operand 21 states and 3831 transitions. [2023-01-27 23:39:42,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 232 transitions, 1166 flow [2023-01-27 23:39:42,113 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 23:39:42,115 INFO L231 Difference]: Finished difference. Result has 108 places, 100 transitions, 535 flow [2023-01-27 23:39:42,115 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 23:39:42,116 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 45 predicate places. [2023-01-27 23:39:42,116 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 100 transitions, 535 flow [2023-01-27 23:39:42,117 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 23:39:42,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:42,117 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 23:39:42,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 23:39:42,117 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 23:39:42,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:42,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1823393625, now seen corresponding path program 2 times [2023-01-27 23:39:42,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:42,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824755927] [2023-01-27 23:39:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:42,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:43,259 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 23:39:43,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:43,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824755927] [2023-01-27 23:39:43,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824755927] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:43,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:43,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 23:39:43,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605835492] [2023-01-27 23:39:43,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:43,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 23:39:43,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:43,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 23:39:43,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-01-27 23:39:43,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 482 [2023-01-27 23:39:43,263 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 23:39:43,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:43,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 482 [2023-01-27 23:39:43,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:43,846 INFO L130 PetriNetUnfolder]: 1338/2509 cut-off events. [2023-01-27 23:39:43,846 INFO L131 PetriNetUnfolder]: For 788/790 co-relation queries the response was YES. [2023-01-27 23:39:43,856 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 23:39:43,862 INFO L137 encePairwiseOnDemand]: 468/482 looper letters, 113 selfloop transitions, 26 changer transitions 7/154 dead transitions. [2023-01-27 23:39:43,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 154 transitions, 946 flow [2023-01-27 23:39:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:39:43,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:39:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1708 transitions. [2023-01-27 23:39:43,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3937298294144767 [2023-01-27 23:39:43,867 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1708 transitions. [2023-01-27 23:39:43,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1708 transitions. [2023-01-27 23:39:43,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:43,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1708 transitions. [2023-01-27 23:39:43,871 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 23:39:43,875 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 23:39:43,876 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 23:39:43,876 INFO L175 Difference]: Start difference. First operand has 108 places, 100 transitions, 535 flow. Second operand 9 states and 1708 transitions. [2023-01-27 23:39:43,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 154 transitions, 946 flow [2023-01-27 23:39:43,882 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 23:39:43,884 INFO L231 Difference]: Finished difference. Result has 100 places, 96 transitions, 498 flow [2023-01-27 23:39:43,884 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 23:39:43,884 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 37 predicate places. [2023-01-27 23:39:43,884 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 96 transitions, 498 flow [2023-01-27 23:39:43,885 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 23:39:43,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:43,885 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 23:39:43,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 23:39:43,885 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 23:39:43,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:43,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1157294127, now seen corresponding path program 3 times [2023-01-27 23:39:43,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:43,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368932548] [2023-01-27 23:39:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:43,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:44,848 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 23:39:44,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:44,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368932548] [2023-01-27 23:39:44,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368932548] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:44,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:44,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 23:39:44,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474952233] [2023-01-27 23:39:44,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:44,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 23:39:44,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:44,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 23:39:44,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-01-27 23:39:44,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 482 [2023-01-27 23:39:44,853 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 23:39:44,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:44,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 482 [2023-01-27 23:39:44,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:45,521 INFO L130 PetriNetUnfolder]: 1141/2151 cut-off events. [2023-01-27 23:39:45,521 INFO L131 PetriNetUnfolder]: For 777/777 co-relation queries the response was YES. [2023-01-27 23:39:45,525 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 23:39:45,530 INFO L137 encePairwiseOnDemand]: 471/482 looper letters, 110 selfloop transitions, 25 changer transitions 11/154 dead transitions. [2023-01-27 23:39:45,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 154 transitions, 935 flow [2023-01-27 23:39:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 23:39:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 23:39:45,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2035 transitions. [2023-01-27 23:39:45,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38381742738589214 [2023-01-27 23:39:45,541 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2035 transitions. [2023-01-27 23:39:45,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2035 transitions. [2023-01-27 23:39:45,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:45,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2035 transitions. [2023-01-27 23:39:45,545 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 23:39:45,551 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 23:39:45,552 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 23:39:45,552 INFO L175 Difference]: Start difference. First operand has 100 places, 96 transitions, 498 flow. Second operand 11 states and 2035 transitions. [2023-01-27 23:39:45,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 154 transitions, 935 flow [2023-01-27 23:39:45,557 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 23:39:45,559 INFO L231 Difference]: Finished difference. Result has 108 places, 97 transitions, 551 flow [2023-01-27 23:39:45,559 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 23:39:45,560 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 45 predicate places. [2023-01-27 23:39:45,560 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 97 transitions, 551 flow [2023-01-27 23:39:45,561 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 23:39:45,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:45,561 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 23:39:45,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 23:39:45,561 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 23:39:45,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1116139787, now seen corresponding path program 1 times [2023-01-27 23:39:45,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:45,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433977221] [2023-01-27 23:39:45,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:45,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:47,758 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 23:39:47,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:47,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433977221] [2023-01-27 23:39:47,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433977221] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:47,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:47,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-01-27 23:39:47,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191802270] [2023-01-27 23:39:47,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:47,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 23:39:47,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:47,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 23:39:47,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-01-27 23:39:47,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 482 [2023-01-27 23:39:47,763 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 23:39:47,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:47,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 482 [2023-01-27 23:39:47,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:48,531 INFO L130 PetriNetUnfolder]: 1323/2495 cut-off events. [2023-01-27 23:39:48,532 INFO L131 PetriNetUnfolder]: For 1388/1390 co-relation queries the response was YES. [2023-01-27 23:39:48,537 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 23:39:48,543 INFO L137 encePairwiseOnDemand]: 469/482 looper letters, 135 selfloop transitions, 27 changer transitions 11/181 dead transitions. [2023-01-27 23:39:48,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 181 transitions, 1117 flow [2023-01-27 23:39:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 23:39:48,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 23:39:48,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2213 transitions. [2023-01-27 23:39:48,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38260719225449513 [2023-01-27 23:39:48,548 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2213 transitions. [2023-01-27 23:39:48,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2213 transitions. [2023-01-27 23:39:48,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:48,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2213 transitions. [2023-01-27 23:39:48,553 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 23:39:48,559 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 23:39:48,560 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 23:39:48,560 INFO L175 Difference]: Start difference. First operand has 108 places, 97 transitions, 551 flow. Second operand 12 states and 2213 transitions. [2023-01-27 23:39:48,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 181 transitions, 1117 flow [2023-01-27 23:39:48,566 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 23:39:48,568 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 628 flow [2023-01-27 23:39:48,568 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 23:39:48,568 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 52 predicate places. [2023-01-27 23:39:48,568 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 628 flow [2023-01-27 23:39:48,569 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 23:39:48,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:48,569 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 23:39:48,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 23:39:48,570 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 23:39:48,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:48,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1441368751, now seen corresponding path program 2 times [2023-01-27 23:39:48,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:48,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259570755] [2023-01-27 23:39:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:48,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:50,499 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 23:39:50,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:50,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259570755] [2023-01-27 23:39:50,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259570755] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:50,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:50,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-01-27 23:39:50,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301028640] [2023-01-27 23:39:50,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:50,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 23:39:50,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:50,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 23:39:50,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-01-27 23:39:50,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 482 [2023-01-27 23:39:50,504 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 23:39:50,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:50,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 482 [2023-01-27 23:39:50,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:51,158 INFO L130 PetriNetUnfolder]: 1522/2894 cut-off events. [2023-01-27 23:39:51,158 INFO L131 PetriNetUnfolder]: For 1804/1804 co-relation queries the response was YES. [2023-01-27 23:39:51,163 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 23:39:51,169 INFO L137 encePairwiseOnDemand]: 469/482 looper letters, 134 selfloop transitions, 32 changer transitions 11/185 dead transitions. [2023-01-27 23:39:51,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 185 transitions, 1204 flow [2023-01-27 23:39:51,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 23:39:51,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 23:39:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2221 transitions. [2023-01-27 23:39:51,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38399031811894885 [2023-01-27 23:39:51,172 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2221 transitions. [2023-01-27 23:39:51,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2221 transitions. [2023-01-27 23:39:51,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:51,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2221 transitions. [2023-01-27 23:39:51,176 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 23:39:51,182 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 23:39:51,183 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 23:39:51,183 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 628 flow. Second operand 12 states and 2221 transitions. [2023-01-27 23:39:51,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 185 transitions, 1204 flow [2023-01-27 23:39:51,190 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 23:39:51,192 INFO L231 Difference]: Finished difference. Result has 122 places, 106 transitions, 705 flow [2023-01-27 23:39:51,192 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 23:39:51,192 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 59 predicate places. [2023-01-27 23:39:51,193 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 106 transitions, 705 flow [2023-01-27 23:39:51,193 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 23:39:51,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:51,193 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 23:39:51,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 23:39:51,194 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 23:39:51,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:51,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1674967413, now seen corresponding path program 3 times [2023-01-27 23:39:51,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:51,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568086318] [2023-01-27 23:39:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:51,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:39:54,816 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 23:39:54,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:39:54,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568086318] [2023-01-27 23:39:54,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568086318] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:39:54,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:39:54,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-01-27 23:39:54,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424674143] [2023-01-27 23:39:54,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:39:54,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-27 23:39:54,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:39:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-27 23:39:54,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-01-27 23:39:54,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 482 [2023-01-27 23:39:54,821 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 23:39:54,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:39:54,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 482 [2023-01-27 23:39:54,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:39:55,465 INFO L130 PetriNetUnfolder]: 1692/3219 cut-off events. [2023-01-27 23:39:55,465 INFO L131 PetriNetUnfolder]: For 2508/2508 co-relation queries the response was YES. [2023-01-27 23:39:55,471 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 23:39:55,476 INFO L137 encePairwiseOnDemand]: 470/482 looper letters, 135 selfloop transitions, 33 changer transitions 11/187 dead transitions. [2023-01-27 23:39:55,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 187 transitions, 1275 flow [2023-01-27 23:39:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 23:39:55,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 23:39:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2209 transitions. [2023-01-27 23:39:55,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819156293222683 [2023-01-27 23:39:55,489 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2209 transitions. [2023-01-27 23:39:55,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2209 transitions. [2023-01-27 23:39:55,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:39:55,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2209 transitions. [2023-01-27 23:39:55,494 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 23:39:55,500 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 23:39:55,501 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 23:39:55,501 INFO L175 Difference]: Start difference. First operand has 122 places, 106 transitions, 705 flow. Second operand 12 states and 2209 transitions. [2023-01-27 23:39:55,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 187 transitions, 1275 flow [2023-01-27 23:39:55,511 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 23:39:55,514 INFO L231 Difference]: Finished difference. Result has 127 places, 109 transitions, 761 flow [2023-01-27 23:39:55,515 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 23:39:55,515 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 64 predicate places. [2023-01-27 23:39:55,515 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 109 transitions, 761 flow [2023-01-27 23:39:55,516 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 23:39:55,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:39:55,516 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 23:39:55,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 23:39:55,517 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 23:39:55,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:39:55,517 INFO L85 PathProgramCache]: Analyzing trace with hash 241474651, now seen corresponding path program 1 times [2023-01-27 23:39:55,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:39:55,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497059584] [2023-01-27 23:39:55,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:39:55,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:39:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-01-27 23:52:37,549 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 23:52:37,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 23:52:37,599 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 23:52:37,602 INFO L158 Benchmark]: Toolchain (without parser) took 799683.34ms. Allocated memory was 369.1MB in the beginning and 7.1GB in the end (delta: 6.7GB). Free memory was 327.3MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. [2023-01-27 23:52:37,602 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:52:37,603 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.59ms. Allocated memory is still 369.1MB. Free memory was 327.0MB in the beginning and 297.0MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-01-27 23:52:37,603 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.97ms. Allocated memory is still 369.1MB. Free memory was 297.0MB in the beginning and 293.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 23:52:37,603 INFO L158 Benchmark]: Boogie Preprocessor took 49.26ms. Allocated memory is still 369.1MB. Free memory was 293.9MB in the beginning and 291.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:52:37,603 INFO L158 Benchmark]: RCFGBuilder took 639.84ms. Allocated memory is still 369.1MB. Free memory was 291.5MB in the beginning and 332.5MB in the end (delta: -41.0MB). Peak memory consumption was 19.0MB. Max. memory is 16.0GB. [2023-01-27 23:52:37,603 INFO L158 Benchmark]: TraceAbstraction took 798396.55ms. Allocated memory was 369.1MB in the beginning and 7.1GB in the end (delta: 6.7GB). Free memory was 331.7MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. [2023-01-27 23:52:37,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 255.9MB. Free memory is still 213.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 539.59ms. Allocated memory is still 369.1MB. Free memory was 327.0MB in the beginning and 297.0MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.97ms. Allocated memory is still 369.1MB. Free memory was 297.0MB in the beginning and 293.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 49.26ms. Allocated memory is still 369.1MB. Free memory was 293.9MB in the beginning and 291.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 639.84ms. Allocated memory is still 369.1MB. Free memory was 291.5MB in the beginning and 332.5MB in the end (delta: -41.0MB). Peak memory consumption was 19.0MB. Max. memory is 16.0GB. * TraceAbstraction took 798396.55ms. Allocated memory was 369.1MB in the beginning and 7.1GB in the end (delta: 6.7GB). Free memory was 331.7MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.9s, 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