/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:56:03,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:56:03,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:56:03,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:56:03,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:56:03,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:56:03,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:56:03,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:56:03,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:56:03,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:56:03,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:56:03,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:56:03,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:56:03,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:56:03,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:56:03,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:56:03,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:56:03,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:56:03,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:56:03,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:56:03,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:56:03,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:56:03,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:56:03,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:56:03,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:56:03,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:56:03,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:56:03,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:56:03,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:56:03,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:56:03,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:56:03,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:56:03,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:56:03,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:56:03,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:56:03,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:56:03,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:56:03,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:56:03,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:56:03,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:56:03,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:56:03,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 02:56:03,455 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:56:03,456 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:56:03,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:56:03,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:56:03,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:56:03,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:56:03,458 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:56:03,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:56:03,458 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:56:03,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:56:03,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:56:03,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:56:03,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:56:03,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:56:03,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:56:03,460 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:56:03,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:56:03,460 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:56:03,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:56:03,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:56:03,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:56:03,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:56:03,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:56:03,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:56:03,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:56:03,461 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:56:03,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:56:03,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:56:03,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:56:03,462 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:56:03,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:56:03,462 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:56:03,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:56:03,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:56:03,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:56:03,697 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:56:03,697 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:56:03,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2023-01-28 02:56:04,712 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:56:04,829 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:56:04,830 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2023-01-28 02:56:04,835 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af5f0b553/b42dc288a8fa43c1a67c580689721e07/FLAGff5ac4f8f [2023-01-28 02:56:05,247 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af5f0b553/b42dc288a8fa43c1a67c580689721e07 [2023-01-28 02:56:05,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:56:05,249 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:56:05,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:56:05,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:56:05,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:56:05,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6863941b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05, skipping insertion in model container [2023-01-28 02:56:05,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,261 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:56:05,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:56:05,394 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2023-01-28 02:56:05,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:56:05,408 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:56:05,432 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2023-01-28 02:56:05,434 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:56:05,444 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:56:05,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05 WrapperNode [2023-01-28 02:56:05,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:56:05,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:56:05,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:56:05,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:56:05,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,487 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 601 [2023-01-28 02:56:05,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:56:05,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:56:05,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:56:05,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:56:05,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,554 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:56:05,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:56:05,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:56:05,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:56:05,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05" (1/1) ... [2023-01-28 02:56:05,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:56:05,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:56:05,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 02:56:05,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 02:56:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:56:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:56:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:56:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:56:05,630 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 02:56:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 02:56:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 02:56:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 02:56:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 02:56:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 02:56:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:56:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:56:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:56:05,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:56:05,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:56:05,632 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:56:05,715 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:56:05,716 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:56:06,319 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:56:06,327 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:56:06,327 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-28 02:56:06,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:56:06 BoogieIcfgContainer [2023-01-28 02:56:06,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:56:06,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:56:06,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:56:06,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:56:06,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:56:05" (1/3) ... [2023-01-28 02:56:06,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ae2076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:56:06, skipping insertion in model container [2023-01-28 02:56:06,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:56:05" (2/3) ... [2023-01-28 02:56:06,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ae2076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:56:06, skipping insertion in model container [2023-01-28 02:56:06,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:56:06" (3/3) ... [2023-01-28 02:56:06,334 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2023-01-28 02:56:06,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:56:06,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:56:06,346 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:56:06,462 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 02:56:06,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 654 places, 717 transitions, 1458 flow [2023-01-28 02:56:06,713 INFO L130 PetriNetUnfolder]: 73/714 cut-off events. [2023-01-28 02:56:06,713 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:56:06,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 714 events. 73/714 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2388 event pairs, 0 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 532. Up to 2 conditions per place. [2023-01-28 02:56:06,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 654 places, 717 transitions, 1458 flow [2023-01-28 02:56:06,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 641 places, 704 transitions, 1426 flow [2023-01-28 02:56:06,791 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:56:06,806 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 641 places, 704 transitions, 1426 flow [2023-01-28 02:56:06,811 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 641 places, 704 transitions, 1426 flow [2023-01-28 02:56:06,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 704 transitions, 1426 flow [2023-01-28 02:56:06,945 INFO L130 PetriNetUnfolder]: 73/704 cut-off events. [2023-01-28 02:56:06,945 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:56:06,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 704 events. 73/704 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2389 event pairs, 0 based on Foata normal form. 0/631 useless extension candidates. Maximal degree in co-relation 532. Up to 2 conditions per place. [2023-01-28 02:56:06,987 INFO L119 LiptonReduction]: Number of co-enabled transitions 157248 [2023-01-28 02:56:28,378 INFO L134 LiptonReduction]: Checked pairs total: 150057 [2023-01-28 02:56:28,378 INFO L136 LiptonReduction]: Total number of compositions: 891 [2023-01-28 02:56:28,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:56:28,391 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;@22c3704a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:56:28,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 02:56:28,413 INFO L130 PetriNetUnfolder]: 12/47 cut-off events. [2023-01-28 02:56:28,414 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:56:28,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:28,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:28,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:28,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:28,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1427696023, now seen corresponding path program 1 times [2023-01-28 02:56:28,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:28,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883516945] [2023-01-28 02:56:28,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:28,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:56:28,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:28,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883516945] [2023-01-28 02:56:28,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883516945] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:28,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:28,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:56:28,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786490576] [2023-01-28 02:56:28,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:28,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:56:28,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:28,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:56:28,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:56:28,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1608 [2023-01-28 02:56:28,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:28,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:28,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1608 [2023-01-28 02:56:28,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:29,296 INFO L130 PetriNetUnfolder]: 2608/3503 cut-off events. [2023-01-28 02:56:29,296 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2023-01-28 02:56:29,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7267 conditions, 3503 events. 2608/3503 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12504 event pairs, 1657 based on Foata normal form. 0/2552 useless extension candidates. Maximal degree in co-relation 6748. Up to 3501 conditions per place. [2023-01-28 02:56:29,310 INFO L137 encePairwiseOnDemand]: 1600/1608 looper letters, 44 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-01-28 02:56:29,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 218 flow [2023-01-28 02:56:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:56:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:56:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1983 transitions. [2023-01-28 02:56:29,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110696517412935 [2023-01-28 02:56:29,330 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1983 transitions. [2023-01-28 02:56:29,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1983 transitions. [2023-01-28 02:56:29,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:29,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1983 transitions. [2023-01-28 02:56:29,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 661.0) internal successors, (1983), 3 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:29,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:29,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:29,356 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 114 flow. Second operand 3 states and 1983 transitions. [2023-01-28 02:56:29,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 218 flow [2023-01-28 02:56:29,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 206 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 02:56:29,365 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 132 flow [2023-01-28 02:56:29,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2023-01-28 02:56:29,371 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-01-28 02:56:29,371 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 132 flow [2023-01-28 02:56:29,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:29,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:29,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:29,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:56:29,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:29,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:29,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2065041558, now seen corresponding path program 1 times [2023-01-28 02:56:29,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:29,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542036408] [2023-01-28 02:56:29,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:29,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:56:29,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:29,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542036408] [2023-01-28 02:56:29,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542036408] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:56:29,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672402102] [2023-01-28 02:56:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:29,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:56:29,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:56:29,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:56:29,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 02:56:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:29,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 02:56:29,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:56:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:56:29,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:56:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:56:29,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672402102] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:56:29,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:56:29,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-01-28 02:56:29,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764514605] [2023-01-28 02:56:29,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:56:29,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:56:29,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:56:29,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:56:29,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1608 [2023-01-28 02:56:29,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 132 flow. Second operand has 8 states, 8 states have (on average 647.0) internal successors, (5176), 8 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:29,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:29,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1608 [2023-01-28 02:56:29,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:30,394 INFO L130 PetriNetUnfolder]: 2608/3512 cut-off events. [2023-01-28 02:56:30,395 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-01-28 02:56:30,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7161 conditions, 3512 events. 2608/3512 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12508 event pairs, 1657 based on Foata normal form. 6/2569 useless extension candidates. Maximal degree in co-relation 7112. Up to 3501 conditions per place. [2023-01-28 02:56:30,408 INFO L137 encePairwiseOnDemand]: 1601/1608 looper letters, 44 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2023-01-28 02:56:30,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 286 flow [2023-01-28 02:56:30,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:56:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:56:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3926 transitions. [2023-01-28 02:56:30,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40692371475953565 [2023-01-28 02:56:30,415 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3926 transitions. [2023-01-28 02:56:30,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3926 transitions. [2023-01-28 02:56:30,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:30,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3926 transitions. [2023-01-28 02:56:30,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 654.3333333333334) internal successors, (3926), 6 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:30,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1608.0) internal successors, (11256), 7 states have internal predecessors, (11256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:30,436 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1608.0) internal successors, (11256), 7 states have internal predecessors, (11256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:30,436 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 132 flow. Second operand 6 states and 3926 transitions. [2023-01-28 02:56:30,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 286 flow [2023-01-28 02:56:30,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:56:30,438 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 222 flow [2023-01-28 02:56:30,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2023-01-28 02:56:30,439 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-01-28 02:56:30,439 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 222 flow [2023-01-28 02:56:30,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 647.0) internal successors, (5176), 8 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:30,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:30,442 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:30,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 02:56:30,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:56:30,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:30,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:30,647 INFO L85 PathProgramCache]: Analyzing trace with hash 773664469, now seen corresponding path program 2 times [2023-01-28 02:56:30,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:30,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778739829] [2023-01-28 02:56:30,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:30,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 02:56:30,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778739829] [2023-01-28 02:56:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778739829] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:56:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750748894] [2023-01-28 02:56:30,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:56:30,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:56:30,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:56:30,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:56:30,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 02:56:30,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-28 02:56:30,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:56:30,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 02:56:30,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:56:32,189 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:56:32,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:56:32,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750748894] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:32,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:56:32,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-01-28 02:56:32,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856422984] [2023-01-28 02:56:32,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:32,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:56:32,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:32,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:56:32,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:56:32,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-28 02:56:32,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:32,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:32,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-28 02:56:32,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:33,108 INFO L130 PetriNetUnfolder]: 2934/4017 cut-off events. [2023-01-28 02:56:33,109 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-01-28 02:56:33,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8213 conditions, 4017 events. 2934/4017 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15676 event pairs, 1657 based on Foata normal form. 1/2930 useless extension candidates. Maximal degree in co-relation 8125. Up to 3431 conditions per place. [2023-01-28 02:56:33,124 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 96 selfloop transitions, 2 changer transitions 7/105 dead transitions. [2023-01-28 02:56:33,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 105 transitions, 536 flow [2023-01-28 02:56:33,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:56:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:56:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3169 transitions. [2023-01-28 02:56:33,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941542288557214 [2023-01-28 02:56:33,131 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3169 transitions. [2023-01-28 02:56:33,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3169 transitions. [2023-01-28 02:56:33,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:33,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3169 transitions. [2023-01-28 02:56:33,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 633.8) internal successors, (3169), 5 states have internal predecessors, (3169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:33,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:33,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:33,146 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 222 flow. Second operand 5 states and 3169 transitions. [2023-01-28 02:56:33,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 105 transitions, 536 flow [2023-01-28 02:56:33,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 105 transitions, 512 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-01-28 02:56:33,151 INFO L231 Difference]: Finished difference. Result has 56 places, 60 transitions, 213 flow [2023-01-28 02:56:33,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=56, PETRI_TRANSITIONS=60} [2023-01-28 02:56:33,152 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-01-28 02:56:33,152 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 60 transitions, 213 flow [2023-01-28 02:56:33,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:33,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:33,154 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:33,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 02:56:33,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-01-28 02:56:33,359 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:33,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1680310845, now seen corresponding path program 3 times [2023-01-28 02:56:33,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:33,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280402188] [2023-01-28 02:56:33,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:33,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 02:56:33,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:33,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280402188] [2023-01-28 02:56:33,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280402188] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:56:33,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940047804] [2023-01-28 02:56:33,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:56:33,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:56:33,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:56:33,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:56:33,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 02:56:33,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-28 02:56:33,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:56:33,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 02:56:33,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:56:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-28 02:56:34,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 02:56:34,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940047804] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:34,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 02:56:34,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-01-28 02:56:34,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692962371] [2023-01-28 02:56:34,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:34,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:56:34,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:34,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:56:34,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-28 02:56:34,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-28 02:56:34,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 60 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:34,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:34,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-28 02:56:34,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:35,521 INFO L130 PetriNetUnfolder]: 3124/4357 cut-off events. [2023-01-28 02:56:35,521 INFO L131 PetriNetUnfolder]: For 701/701 co-relation queries the response was YES. [2023-01-28 02:56:35,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9403 conditions, 4357 events. 3124/4357 cut-off events. For 701/701 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18094 event pairs, 1919 based on Foata normal form. 1/3672 useless extension candidates. Maximal degree in co-relation 9371. Up to 3869 conditions per place. [2023-01-28 02:56:35,537 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 100 selfloop transitions, 3 changer transitions 7/110 dead transitions. [2023-01-28 02:56:35,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 110 transitions, 555 flow [2023-01-28 02:56:35,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:56:35,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:56:35,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3173 transitions. [2023-01-28 02:56:35,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39465174129353237 [2023-01-28 02:56:35,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3173 transitions. [2023-01-28 02:56:35,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3173 transitions. [2023-01-28 02:56:35,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:35,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3173 transitions. [2023-01-28 02:56:35,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 634.6) internal successors, (3173), 5 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:35,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:35,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:35,555 INFO L175 Difference]: Start difference. First operand has 56 places, 60 transitions, 213 flow. Second operand 5 states and 3173 transitions. [2023-01-28 02:56:35,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 110 transitions, 555 flow [2023-01-28 02:56:35,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 110 transitions, 546 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-28 02:56:35,558 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 230 flow [2023-01-28 02:56:35,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-01-28 02:56:35,558 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-01-28 02:56:35,558 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 230 flow [2023-01-28 02:56:35,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:35,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:35,559 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:35,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 02:56:35,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:56:35,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:35,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:35,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1405257897, now seen corresponding path program 4 times [2023-01-28 02:56:35,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:35,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579251727] [2023-01-28 02:56:35,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:35,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 02:56:35,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:35,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579251727] [2023-01-28 02:56:35,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579251727] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:56:35,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392536781] [2023-01-28 02:56:35,929 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:56:35,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:56:35,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:56:35,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:56:35,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 02:56:36,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:56:36,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:56:36,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 02:56:36,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:56:36,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 02:56:36,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:56:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-28 02:56:36,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392536781] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:56:36,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:56:36,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-28 02:56:36,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737328454] [2023-01-28 02:56:36,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:56:36,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 02:56:36,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:36,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 02:56:36,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-01-28 02:56:36,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1608 [2023-01-28 02:56:36,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 230 flow. Second operand has 13 states, 13 states have (on average 645.5384615384615) internal successors, (8392), 13 states have internal predecessors, (8392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:36,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:36,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1608 [2023-01-28 02:56:36,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:36,908 INFO L130 PetriNetUnfolder]: 3123/4352 cut-off events. [2023-01-28 02:56:36,909 INFO L131 PetriNetUnfolder]: For 1787/1787 co-relation queries the response was YES. [2023-01-28 02:56:36,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9913 conditions, 4352 events. 3123/4352 cut-off events. For 1787/1787 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17812 event pairs, 2136 based on Foata normal form. 1/3667 useless extension candidates. Maximal degree in co-relation 9879. Up to 4338 conditions per place. [2023-01-28 02:56:36,929 INFO L137 encePairwiseOnDemand]: 1601/1608 looper letters, 46 selfloop transitions, 18 changer transitions 0/64 dead transitions. [2023-01-28 02:56:36,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 376 flow [2023-01-28 02:56:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:56:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:56:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4566 transitions. [2023-01-28 02:56:36,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056503198294243 [2023-01-28 02:56:36,940 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4566 transitions. [2023-01-28 02:56:36,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4566 transitions. [2023-01-28 02:56:36,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:36,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4566 transitions. [2023-01-28 02:56:36,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 652.2857142857143) internal successors, (4566), 7 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:36,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1608.0) internal successors, (12864), 8 states have internal predecessors, (12864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:36,971 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1608.0) internal successors, (12864), 8 states have internal predecessors, (12864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:36,972 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 230 flow. Second operand 7 states and 4566 transitions. [2023-01-28 02:56:36,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 376 flow [2023-01-28 02:56:36,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 370 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 02:56:36,977 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 292 flow [2023-01-28 02:56:36,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2023-01-28 02:56:36,978 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-01-28 02:56:36,978 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 292 flow [2023-01-28 02:56:36,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 645.5384615384615) internal successors, (8392), 13 states have internal predecessors, (8392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:36,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:36,981 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:37,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 02:56:37,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:56:37,187 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:37,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:37,188 INFO L85 PathProgramCache]: Analyzing trace with hash -472303414, now seen corresponding path program 5 times [2023-01-28 02:56:37,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:37,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108027791] [2023-01-28 02:56:37,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:37,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:56:37,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:37,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108027791] [2023-01-28 02:56:37,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108027791] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:37,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:37,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:56:37,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739986732] [2023-01-28 02:56:37,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:37,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:56:37,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:37,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:56:37,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:56:37,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-28 02:56:37,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:37,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:37,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-28 02:56:37,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:38,539 INFO L130 PetriNetUnfolder]: 3772/5412 cut-off events. [2023-01-28 02:56:38,539 INFO L131 PetriNetUnfolder]: For 1184/1184 co-relation queries the response was YES. [2023-01-28 02:56:38,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11895 conditions, 5412 events. 3772/5412 cut-off events. For 1184/1184 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 25238 event pairs, 2135 based on Foata normal form. 1/4567 useless extension candidates. Maximal degree in co-relation 11782. Up to 4014 conditions per place. [2023-01-28 02:56:38,556 INFO L137 encePairwiseOnDemand]: 1596/1608 looper letters, 121 selfloop transitions, 14 changer transitions 4/139 dead transitions. [2023-01-28 02:56:38,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 139 transitions, 751 flow [2023-01-28 02:56:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:56:38,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:56:38,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3197 transitions. [2023-01-28 02:56:38,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397636815920398 [2023-01-28 02:56:38,561 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3197 transitions. [2023-01-28 02:56:38,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3197 transitions. [2023-01-28 02:56:38,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:38,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3197 transitions. [2023-01-28 02:56:38,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 639.4) internal successors, (3197), 5 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:38,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:38,573 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:38,573 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 292 flow. Second operand 5 states and 3197 transitions. [2023-01-28 02:56:38,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 139 transitions, 751 flow [2023-01-28 02:56:38,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 139 transitions, 715 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-28 02:56:38,576 INFO L231 Difference]: Finished difference. Result has 67 places, 76 transitions, 372 flow [2023-01-28 02:56:38,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=67, PETRI_TRANSITIONS=76} [2023-01-28 02:56:38,576 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2023-01-28 02:56:38,576 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 76 transitions, 372 flow [2023-01-28 02:56:38,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:38,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:38,577 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:38,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 02:56:38,577 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:38,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:38,578 INFO L85 PathProgramCache]: Analyzing trace with hash 952440716, now seen corresponding path program 6 times [2023-01-28 02:56:38,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:38,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370137735] [2023-01-28 02:56:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:38,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:56:39,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:39,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370137735] [2023-01-28 02:56:39,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370137735] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:39,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:39,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:56:39,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719009878] [2023-01-28 02:56:39,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:39,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:56:39,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:39,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:56:39,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:56:39,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-28 02:56:39,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 76 transitions, 372 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:39,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:39,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-28 02:56:39,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:40,701 INFO L130 PetriNetUnfolder]: 7026/9920 cut-off events. [2023-01-28 02:56:40,701 INFO L131 PetriNetUnfolder]: For 6866/6866 co-relation queries the response was YES. [2023-01-28 02:56:40,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24933 conditions, 9920 events. 7026/9920 cut-off events. For 6866/6866 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 49525 event pairs, 1967 based on Foata normal form. 1/8697 useless extension candidates. Maximal degree in co-relation 24834. Up to 4768 conditions per place. [2023-01-28 02:56:40,733 INFO L137 encePairwiseOnDemand]: 1593/1608 looper letters, 127 selfloop transitions, 43 changer transitions 3/173 dead transitions. [2023-01-28 02:56:40,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 173 transitions, 1042 flow [2023-01-28 02:56:40,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:56:40,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:56:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3218 transitions. [2023-01-28 02:56:40,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4002487562189055 [2023-01-28 02:56:40,739 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3218 transitions. [2023-01-28 02:56:40,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3218 transitions. [2023-01-28 02:56:40,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:40,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3218 transitions. [2023-01-28 02:56:40,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 643.6) internal successors, (3218), 5 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:40,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:40,750 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:40,750 INFO L175 Difference]: Start difference. First operand has 67 places, 76 transitions, 372 flow. Second operand 5 states and 3218 transitions. [2023-01-28 02:56:40,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 173 transitions, 1042 flow [2023-01-28 02:56:40,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 173 transitions, 1031 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 02:56:40,760 INFO L231 Difference]: Finished difference. Result has 73 places, 106 transitions, 711 flow [2023-01-28 02:56:40,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=711, PETRI_PLACES=73, PETRI_TRANSITIONS=106} [2023-01-28 02:56:40,760 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2023-01-28 02:56:40,760 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 106 transitions, 711 flow [2023-01-28 02:56:40,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:40,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:40,761 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:40,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 02:56:40,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:40,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:40,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1010676078, now seen corresponding path program 7 times [2023-01-28 02:56:40,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:40,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769656009] [2023-01-28 02:56:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:40,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:41,186 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:56:41,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:41,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769656009] [2023-01-28 02:56:41,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769656009] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:41,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:41,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:56:41,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766649564] [2023-01-28 02:56:41,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:41,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:56:41,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:41,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:56:41,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:56:41,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-28 02:56:41,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 106 transitions, 711 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:41,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:41,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-28 02:56:41,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:42,734 INFO L130 PetriNetUnfolder]: 7335/10386 cut-off events. [2023-01-28 02:56:42,735 INFO L131 PetriNetUnfolder]: For 16920/16920 co-relation queries the response was YES. [2023-01-28 02:56:42,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31791 conditions, 10386 events. 7335/10386 cut-off events. For 16920/16920 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 52628 event pairs, 3757 based on Foata normal form. 1/9053 useless extension candidates. Maximal degree in co-relation 31689. Up to 8786 conditions per place. [2023-01-28 02:56:42,779 INFO L137 encePairwiseOnDemand]: 1596/1608 looper letters, 167 selfloop transitions, 19 changer transitions 3/189 dead transitions. [2023-01-28 02:56:42,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 189 transitions, 1471 flow [2023-01-28 02:56:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:56:42,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:56:42,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3191 transitions. [2023-01-28 02:56:42,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968905472636816 [2023-01-28 02:56:42,785 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3191 transitions. [2023-01-28 02:56:42,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3191 transitions. [2023-01-28 02:56:42,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:42,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3191 transitions. [2023-01-28 02:56:42,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 638.2) internal successors, (3191), 5 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:42,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:42,796 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:42,796 INFO L175 Difference]: Start difference. First operand has 73 places, 106 transitions, 711 flow. Second operand 5 states and 3191 transitions. [2023-01-28 02:56:42,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 189 transitions, 1471 flow [2023-01-28 02:56:42,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 189 transitions, 1453 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-01-28 02:56:42,828 INFO L231 Difference]: Finished difference. Result has 80 places, 122 transitions, 904 flow [2023-01-28 02:56:42,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=904, PETRI_PLACES=80, PETRI_TRANSITIONS=122} [2023-01-28 02:56:42,828 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2023-01-28 02:56:42,828 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 122 transitions, 904 flow [2023-01-28 02:56:42,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:42,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:42,829 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:42,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 02:56:42,830 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:42,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:42,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1354860510, now seen corresponding path program 8 times [2023-01-28 02:56:42,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:42,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088487609] [2023-01-28 02:56:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:42,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:56:43,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:43,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088487609] [2023-01-28 02:56:43,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088487609] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:43,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:43,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:56:43,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85925880] [2023-01-28 02:56:43,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:43,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:56:43,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:43,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:56:43,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:56:43,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-28 02:56:43,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 122 transitions, 904 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:43,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:43,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-28 02:56:43,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:45,009 INFO L130 PetriNetUnfolder]: 7800/11126 cut-off events. [2023-01-28 02:56:45,010 INFO L131 PetriNetUnfolder]: For 25716/25716 co-relation queries the response was YES. [2023-01-28 02:56:45,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38905 conditions, 11126 events. 7800/11126 cut-off events. For 25716/25716 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 57874 event pairs, 3450 based on Foata normal form. 1/9741 useless extension candidates. Maximal degree in co-relation 38799. Up to 8455 conditions per place. [2023-01-28 02:56:45,057 INFO L137 encePairwiseOnDemand]: 1596/1608 looper letters, 174 selfloop transitions, 40 changer transitions 4/218 dead transitions. [2023-01-28 02:56:45,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 218 transitions, 1838 flow [2023-01-28 02:56:45,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:56:45,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:56:45,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3206 transitions. [2023-01-28 02:56:45,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39875621890547264 [2023-01-28 02:56:45,063 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3206 transitions. [2023-01-28 02:56:45,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3206 transitions. [2023-01-28 02:56:45,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:45,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3206 transitions. [2023-01-28 02:56:45,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 641.2) internal successors, (3206), 5 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:45,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:45,072 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:45,073 INFO L175 Difference]: Start difference. First operand has 80 places, 122 transitions, 904 flow. Second operand 5 states and 3206 transitions. [2023-01-28 02:56:45,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 218 transitions, 1838 flow [2023-01-28 02:56:45,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 218 transitions, 1816 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 02:56:45,135 INFO L231 Difference]: Finished difference. Result has 86 places, 145 transitions, 1288 flow [2023-01-28 02:56:45,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1288, PETRI_PLACES=86, PETRI_TRANSITIONS=145} [2023-01-28 02:56:45,136 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2023-01-28 02:56:45,136 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 145 transitions, 1288 flow [2023-01-28 02:56:45,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:45,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:45,137 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:45,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 02:56:45,137 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:45,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:45,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2050180737, now seen corresponding path program 1 times [2023-01-28 02:56:45,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:45,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651503807] [2023-01-28 02:56:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:45,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:45,258 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:56:45,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:45,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651503807] [2023-01-28 02:56:45,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651503807] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:45,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:45,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:56:45,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735672038] [2023-01-28 02:56:45,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:45,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:56:45,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:45,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:56:45,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:56:45,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1608 [2023-01-28 02:56:45,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 145 transitions, 1288 flow. Second operand has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:45,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:45,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1608 [2023-01-28 02:56:45,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:46,981 INFO L130 PetriNetUnfolder]: 9909/14036 cut-off events. [2023-01-28 02:56:46,981 INFO L131 PetriNetUnfolder]: For 48456/48456 co-relation queries the response was YES. [2023-01-28 02:56:47,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51285 conditions, 14036 events. 9909/14036 cut-off events. For 48456/48456 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 73262 event pairs, 4598 based on Foata normal form. 206/12412 useless extension candidates. Maximal degree in co-relation 51176. Up to 10987 conditions per place. [2023-01-28 02:56:47,060 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 192 selfloop transitions, 6 changer transitions 0/198 dead transitions. [2023-01-28 02:56:47,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 198 transitions, 2083 flow [2023-01-28 02:56:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:56:47,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:56:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2006 transitions. [2023-01-28 02:56:47,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158374792703151 [2023-01-28 02:56:47,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2006 transitions. [2023-01-28 02:56:47,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2006 transitions. [2023-01-28 02:56:47,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:47,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2006 transitions. [2023-01-28 02:56:47,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 668.6666666666666) internal successors, (2006), 3 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:47,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:47,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:47,072 INFO L175 Difference]: Start difference. First operand has 86 places, 145 transitions, 1288 flow. Second operand 3 states and 2006 transitions. [2023-01-28 02:56:47,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 198 transitions, 2083 flow [2023-01-28 02:56:47,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 198 transitions, 2063 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-28 02:56:47,184 INFO L231 Difference]: Finished difference. Result has 88 places, 142 transitions, 1256 flow [2023-01-28 02:56:47,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1256, PETRI_PLACES=88, PETRI_TRANSITIONS=142} [2023-01-28 02:56:47,185 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 42 predicate places. [2023-01-28 02:56:47,185 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 142 transitions, 1256 flow [2023-01-28 02:56:47,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:47,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:47,185 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:47,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 02:56:47,185 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:47,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash 763817431, now seen corresponding path program 1 times [2023-01-28 02:56:47,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:47,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465069814] [2023-01-28 02:56:47,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:47,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:56:47,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:47,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465069814] [2023-01-28 02:56:47,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465069814] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:47,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:47,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:56:47,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272832086] [2023-01-28 02:56:47,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:47,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:56:47,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:47,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:56:47,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:56:47,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1608 [2023-01-28 02:56:47,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 142 transitions, 1256 flow. Second operand has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:47,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:47,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1608 [2023-01-28 02:56:47,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:49,830 INFO L130 PetriNetUnfolder]: 12294/17373 cut-off events. [2023-01-28 02:56:49,830 INFO L131 PetriNetUnfolder]: For 54974/54974 co-relation queries the response was YES. [2023-01-28 02:56:49,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64321 conditions, 17373 events. 12294/17373 cut-off events. For 54974/54974 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 92936 event pairs, 5850 based on Foata normal form. 0/15447 useless extension candidates. Maximal degree in co-relation 64211. Up to 14217 conditions per place. [2023-01-28 02:56:49,931 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 179 selfloop transitions, 9 changer transitions 0/188 dead transitions. [2023-01-28 02:56:49,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 188 transitions, 1949 flow [2023-01-28 02:56:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:56:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:56:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2010 transitions. [2023-01-28 02:56:49,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-01-28 02:56:49,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2010 transitions. [2023-01-28 02:56:49,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2010 transitions. [2023-01-28 02:56:49,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:49,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2010 transitions. [2023-01-28 02:56:49,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 670.0) internal successors, (2010), 3 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:49,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:49,939 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:49,939 INFO L175 Difference]: Start difference. First operand has 88 places, 142 transitions, 1256 flow. Second operand 3 states and 2010 transitions. [2023-01-28 02:56:49,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 188 transitions, 1949 flow [2023-01-28 02:56:50,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 188 transitions, 1940 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:56:50,081 INFO L231 Difference]: Finished difference. Result has 90 places, 141 transitions, 1275 flow [2023-01-28 02:56:50,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1275, PETRI_PLACES=90, PETRI_TRANSITIONS=141} [2023-01-28 02:56:50,081 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 44 predicate places. [2023-01-28 02:56:50,081 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 141 transitions, 1275 flow [2023-01-28 02:56:50,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:50,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:50,082 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:50,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 02:56:50,082 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:50,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash 937813535, now seen corresponding path program 1 times [2023-01-28 02:56:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122349228] [2023-01-28 02:56:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:50,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:56:50,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:50,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122349228] [2023-01-28 02:56:50,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122349228] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:50,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:50,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:56:50,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283956530] [2023-01-28 02:56:50,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:50,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:56:50,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:50,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:56:50,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:56:50,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1608 [2023-01-28 02:56:50,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 141 transitions, 1275 flow. Second operand has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:50,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:50,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1608 [2023-01-28 02:56:50,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:53,547 INFO L130 PetriNetUnfolder]: 17332/24411 cut-off events. [2023-01-28 02:56:53,547 INFO L131 PetriNetUnfolder]: For 81239/81239 co-relation queries the response was YES. [2023-01-28 02:56:53,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93256 conditions, 24411 events. 17332/24411 cut-off events. For 81239/81239 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 133043 event pairs, 8161 based on Foata normal form. 412/21791 useless extension candidates. Maximal degree in co-relation 93145. Up to 16188 conditions per place. [2023-01-28 02:56:53,694 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 182 selfloop transitions, 8 changer transitions 0/190 dead transitions. [2023-01-28 02:56:53,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 190 transitions, 2024 flow [2023-01-28 02:56:53,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:56:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:56:53,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2008 transitions. [2023-01-28 02:56:53,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41625207296849087 [2023-01-28 02:56:53,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2008 transitions. [2023-01-28 02:56:53,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2008 transitions. [2023-01-28 02:56:53,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:53,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2008 transitions. [2023-01-28 02:56:53,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 669.3333333333334) internal successors, (2008), 3 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:53,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:53,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:53,725 INFO L175 Difference]: Start difference. First operand has 90 places, 141 transitions, 1275 flow. Second operand 3 states and 2008 transitions. [2023-01-28 02:56:53,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 190 transitions, 2024 flow [2023-01-28 02:56:53,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 190 transitions, 1995 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 02:56:53,948 INFO L231 Difference]: Finished difference. Result has 92 places, 138 transitions, 1237 flow [2023-01-28 02:56:53,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1237, PETRI_PLACES=92, PETRI_TRANSITIONS=138} [2023-01-28 02:56:53,950 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2023-01-28 02:56:53,950 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 138 transitions, 1237 flow [2023-01-28 02:56:53,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:53,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:53,951 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:53,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 02:56:53,951 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:53,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:53,952 INFO L85 PathProgramCache]: Analyzing trace with hash 146834425, now seen corresponding path program 1 times [2023-01-28 02:56:53,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:53,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155227348] [2023-01-28 02:56:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:53,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 02:56:54,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:54,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155227348] [2023-01-28 02:56:54,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155227348] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:54,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:54,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:56:54,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95272840] [2023-01-28 02:56:54,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:54,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:56:54,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:54,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:56:54,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:56:54,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-28 02:56:54,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 138 transitions, 1237 flow. Second operand has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:54,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:54,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-28 02:56:54,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:58,456 INFO L130 PetriNetUnfolder]: 17806/25153 cut-off events. [2023-01-28 02:56:58,456 INFO L131 PetriNetUnfolder]: For 79892/79892 co-relation queries the response was YES. [2023-01-28 02:56:58,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95789 conditions, 25153 events. 17806/25153 cut-off events. For 79892/79892 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 142677 event pairs, 4930 based on Foata normal form. 4/21961 useless extension candidates. Maximal degree in co-relation 95677. Up to 22762 conditions per place. [2023-01-28 02:56:58,646 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 166 selfloop transitions, 11 changer transitions 29/206 dead transitions. [2023-01-28 02:56:58,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 206 transitions, 2100 flow [2023-01-28 02:56:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:56:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:56:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2695 transitions. [2023-01-28 02:56:58,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189987562189055 [2023-01-28 02:56:58,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2695 transitions. [2023-01-28 02:56:58,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2695 transitions. [2023-01-28 02:56:58,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:58,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2695 transitions. [2023-01-28 02:56:58,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 673.75) internal successors, (2695), 4 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:58,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:58,656 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:58,656 INFO L175 Difference]: Start difference. First operand has 92 places, 138 transitions, 1237 flow. Second operand 4 states and 2695 transitions. [2023-01-28 02:56:58,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 206 transitions, 2100 flow [2023-01-28 02:56:58,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 206 transitions, 2084 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:56:58,798 INFO L231 Difference]: Finished difference. Result has 97 places, 143 transitions, 1338 flow [2023-01-28 02:56:58,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1338, PETRI_PLACES=97, PETRI_TRANSITIONS=143} [2023-01-28 02:56:58,798 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2023-01-28 02:56:58,798 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 143 transitions, 1338 flow [2023-01-28 02:56:58,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:58,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:58,799 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:58,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 02:56:58,799 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:58,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:58,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1281119567, now seen corresponding path program 2 times [2023-01-28 02:56:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:58,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164081458] [2023-01-28 02:56:58,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:58,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 02:56:59,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:59,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164081458] [2023-01-28 02:56:59,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164081458] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:59,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:59,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:56:59,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910978363] [2023-01-28 02:56:59,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:59,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:56:59,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:59,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:56:59,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:56:59,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-28 02:56:59,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 143 transitions, 1338 flow. Second operand has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:56:59,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:59,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-28 02:56:59,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:03,036 INFO L130 PetriNetUnfolder]: 16909/23851 cut-off events. [2023-01-28 02:57:03,036 INFO L131 PetriNetUnfolder]: For 77336/77336 co-relation queries the response was YES. [2023-01-28 02:57:03,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90507 conditions, 23851 events. 16909/23851 cut-off events. For 77336/77336 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 131000 event pairs, 10297 based on Foata normal form. 5/20840 useless extension candidates. Maximal degree in co-relation 90439. Up to 21826 conditions per place. [2023-01-28 02:57:03,164 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 155 selfloop transitions, 4 changer transitions 37/196 dead transitions. [2023-01-28 02:57:03,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 196 transitions, 1991 flow [2023-01-28 02:57:03,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:57:03,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:57:03,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2693 transitions. [2023-01-28 02:57:03,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41868781094527363 [2023-01-28 02:57:03,167 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2693 transitions. [2023-01-28 02:57:03,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2693 transitions. [2023-01-28 02:57:03,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:57:03,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2693 transitions. [2023-01-28 02:57:03,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 673.25) internal successors, (2693), 4 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:03,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:03,174 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:03,174 INFO L175 Difference]: Start difference. First operand has 97 places, 143 transitions, 1338 flow. Second operand 4 states and 2693 transitions. [2023-01-28 02:57:03,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 196 transitions, 1991 flow [2023-01-28 02:57:03,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 196 transitions, 1976 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 02:57:03,325 INFO L231 Difference]: Finished difference. Result has 98 places, 131 transitions, 1196 flow [2023-01-28 02:57:03,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1196, PETRI_PLACES=98, PETRI_TRANSITIONS=131} [2023-01-28 02:57:03,326 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2023-01-28 02:57:03,326 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 131 transitions, 1196 flow [2023-01-28 02:57:03,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:03,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:57:03,326 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:57:03,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 02:57:03,326 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:57:03,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:57:03,327 INFO L85 PathProgramCache]: Analyzing trace with hash -244449536, now seen corresponding path program 1 times [2023-01-28 02:57:03,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:57:03,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464899895] [2023-01-28 02:57:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:03,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:57:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:03,648 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:57:03,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:57:03,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464899895] [2023-01-28 02:57:03,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464899895] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:57:03,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911439529] [2023-01-28 02:57:03,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:03,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:57:03,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:57:03,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:57:03,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 02:57:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:03,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 02:57:03,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:57:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:57:03,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:57:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:57:04,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911439529] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:57:04,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:57:04,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2023-01-28 02:57:04,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503385295] [2023-01-28 02:57:04,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:57:04,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 02:57:04,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:57:04,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 02:57:04,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-28 02:57:04,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 624 out of 1608 [2023-01-28 02:57:04,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 131 transitions, 1196 flow. Second operand has 9 states, 9 states have (on average 631.6666666666666) internal successors, (5685), 9 states have internal predecessors, (5685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:04,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:57:04,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 624 of 1608 [2023-01-28 02:57:04,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:08,190 INFO L130 PetriNetUnfolder]: 17414/24697 cut-off events. [2023-01-28 02:57:08,191 INFO L131 PetriNetUnfolder]: For 77476/77476 co-relation queries the response was YES. [2023-01-28 02:57:08,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93462 conditions, 24697 events. 17414/24697 cut-off events. For 77476/77476 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 137965 event pairs, 3924 based on Foata normal form. 4/21597 useless extension candidates. Maximal degree in co-relation 93391. Up to 11141 conditions per place. [2023-01-28 02:57:08,348 INFO L137 encePairwiseOnDemand]: 1594/1608 looper letters, 259 selfloop transitions, 62 changer transitions 35/356 dead transitions. [2023-01-28 02:57:08,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 356 transitions, 3292 flow [2023-01-28 02:57:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 02:57:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 02:57:08,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 8980 transitions. [2023-01-28 02:57:08,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39889836531627576 [2023-01-28 02:57:08,360 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 8980 transitions. [2023-01-28 02:57:08,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 8980 transitions. [2023-01-28 02:57:08,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:57:08,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 8980 transitions. [2023-01-28 02:57:08,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 641.4285714285714) internal successors, (8980), 14 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:08,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1608.0) internal successors, (24120), 15 states have internal predecessors, (24120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:08,382 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1608.0) internal successors, (24120), 15 states have internal predecessors, (24120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:08,382 INFO L175 Difference]: Start difference. First operand has 98 places, 131 transitions, 1196 flow. Second operand 14 states and 8980 transitions. [2023-01-28 02:57:08,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 356 transitions, 3292 flow [2023-01-28 02:57:08,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 356 transitions, 3250 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-01-28 02:57:08,612 INFO L231 Difference]: Finished difference. Result has 112 places, 161 transitions, 1745 flow [2023-01-28 02:57:08,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1745, PETRI_PLACES=112, PETRI_TRANSITIONS=161} [2023-01-28 02:57:08,613 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 66 predicate places. [2023-01-28 02:57:08,613 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 161 transitions, 1745 flow [2023-01-28 02:57:08,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 631.6666666666666) internal successors, (5685), 9 states have internal predecessors, (5685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:08,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:57:08,613 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:57:08,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 02:57:08,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 02:57:08,820 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:57:08,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:57:08,820 INFO L85 PathProgramCache]: Analyzing trace with hash 939975353, now seen corresponding path program 1 times [2023-01-28 02:57:08,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:57:08,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379891262] [2023-01-28 02:57:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:08,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:57:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:57:09,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:57:09,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379891262] [2023-01-28 02:57:09,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379891262] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:57:09,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341731806] [2023-01-28 02:57:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:09,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:57:09,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:57:09,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:57:09,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 02:57:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:09,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 02:57:09,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:57:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:57:09,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:57:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:57:09,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341731806] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:57:09,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:57:09,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-28 02:57:09,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966218388] [2023-01-28 02:57:09,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:57:09,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:57:09,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:57:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:57:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:57:09,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-28 02:57:09,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 161 transitions, 1745 flow. Second operand has 6 states, 6 states have (on average 657.6666666666666) internal successors, (3946), 6 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:09,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:57:09,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-28 02:57:09,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:13,463 INFO L130 PetriNetUnfolder]: 17516/24962 cut-off events. [2023-01-28 02:57:13,463 INFO L131 PetriNetUnfolder]: For 100253/100253 co-relation queries the response was YES. [2023-01-28 02:57:13,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98038 conditions, 24962 events. 17516/24962 cut-off events. For 100253/100253 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 141460 event pairs, 3642 based on Foata normal form. 3/21839 useless extension candidates. Maximal degree in co-relation 97966. Up to 20872 conditions per place. [2023-01-28 02:57:13,680 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 149 selfloop transitions, 12 changer transitions 63/224 dead transitions. [2023-01-28 02:57:13,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 224 transitions, 2603 flow [2023-01-28 02:57:13,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:57:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:57:13,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2701 transitions. [2023-01-28 02:57:13,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419931592039801 [2023-01-28 02:57:13,684 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2701 transitions. [2023-01-28 02:57:13,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2701 transitions. [2023-01-28 02:57:13,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:57:13,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2701 transitions. [2023-01-28 02:57:13,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 675.25) internal successors, (2701), 4 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:13,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:13,689 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:13,689 INFO L175 Difference]: Start difference. First operand has 112 places, 161 transitions, 1745 flow. Second operand 4 states and 2701 transitions. [2023-01-28 02:57:13,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 224 transitions, 2603 flow [2023-01-28 02:57:14,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 224 transitions, 2533 flow, removed 35 selfloop flow, removed 1 redundant places. [2023-01-28 02:57:14,121 INFO L231 Difference]: Finished difference. Result has 116 places, 136 transitions, 1435 flow [2023-01-28 02:57:14,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1435, PETRI_PLACES=116, PETRI_TRANSITIONS=136} [2023-01-28 02:57:14,122 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2023-01-28 02:57:14,122 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 136 transitions, 1435 flow [2023-01-28 02:57:14,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 657.6666666666666) internal successors, (3946), 6 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:14,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:57:14,122 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:57:14,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 02:57:14,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 02:57:14,328 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:57:14,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:57:14,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2101200279, now seen corresponding path program 2 times [2023-01-28 02:57:14,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:57:14,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587862913] [2023-01-28 02:57:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:14,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:57:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 02:57:14,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:57:14,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587862913] [2023-01-28 02:57:14,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587862913] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:57:14,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:57:14,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:57:14,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248917154] [2023-01-28 02:57:14,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:57:14,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:57:14,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:57:14,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:57:14,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:57:14,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-28 02:57:14,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 136 transitions, 1435 flow. Second operand has 4 states, 4 states have (on average 657.5) internal successors, (2630), 4 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:14,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:57:14,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-28 02:57:14,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:17,875 INFO L130 PetriNetUnfolder]: 15133/21478 cut-off events. [2023-01-28 02:57:17,875 INFO L131 PetriNetUnfolder]: For 79389/79389 co-relation queries the response was YES. [2023-01-28 02:57:18,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80846 conditions, 21478 events. 15133/21478 cut-off events. For 79389/79389 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 117789 event pairs, 8830 based on Foata normal form. 4/18652 useless extension candidates. Maximal degree in co-relation 80784. Up to 18757 conditions per place. [2023-01-28 02:57:18,116 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 128 selfloop transitions, 3 changer transitions 58/189 dead transitions. [2023-01-28 02:57:18,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 189 transitions, 2126 flow [2023-01-28 02:57:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:57:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:57:18,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2697 transitions. [2023-01-28 02:57:18,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193097014925373 [2023-01-28 02:57:18,122 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2697 transitions. [2023-01-28 02:57:18,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2697 transitions. [2023-01-28 02:57:18,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:57:18,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2697 transitions. [2023-01-28 02:57:18,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 674.25) internal successors, (2697), 4 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:18,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:18,157 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:18,157 INFO L175 Difference]: Start difference. First operand has 116 places, 136 transitions, 1435 flow. Second operand 4 states and 2697 transitions. [2023-01-28 02:57:18,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 189 transitions, 2126 flow [2023-01-28 02:57:18,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 189 transitions, 2056 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-01-28 02:57:18,280 INFO L231 Difference]: Finished difference. Result has 109 places, 113 transitions, 1011 flow [2023-01-28 02:57:18,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1011, PETRI_PLACES=109, PETRI_TRANSITIONS=113} [2023-01-28 02:57:18,281 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2023-01-28 02:57:18,281 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 113 transitions, 1011 flow [2023-01-28 02:57:18,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 657.5) internal successors, (2630), 4 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:18,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:57:18,281 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:57:18,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 02:57:18,281 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:57:18,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:57:18,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2049052014, now seen corresponding path program 2 times [2023-01-28 02:57:18,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:57:18,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610664950] [2023-01-28 02:57:18,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:18,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:57:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 02:57:18,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:57:18,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610664950] [2023-01-28 02:57:18,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610664950] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:57:18,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:57:18,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:57:18,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814477841] [2023-01-28 02:57:18,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:57:18,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:57:18,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:57:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:57:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:57:18,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 1608 [2023-01-28 02:57:18,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 113 transitions, 1011 flow. Second operand has 5 states, 5 states have (on average 638.0) internal successors, (3190), 5 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:18,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:57:18,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 1608 [2023-01-28 02:57:18,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:21,322 INFO L130 PetriNetUnfolder]: 13744/19200 cut-off events. [2023-01-28 02:57:21,322 INFO L131 PetriNetUnfolder]: For 60014/60014 co-relation queries the response was YES. [2023-01-28 02:57:21,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71251 conditions, 19200 events. 13744/19200 cut-off events. For 60014/60014 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 99419 event pairs, 3970 based on Foata normal form. 1/16577 useless extension candidates. Maximal degree in co-relation 71215. Up to 10228 conditions per place. [2023-01-28 02:57:21,440 INFO L137 encePairwiseOnDemand]: 1598/1608 looper letters, 140 selfloop transitions, 30 changer transitions 21/191 dead transitions. [2023-01-28 02:57:21,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 191 transitions, 1813 flow [2023-01-28 02:57:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:57:21,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:57:21,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3281 transitions. [2023-01-28 02:57:21,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40808457711442786 [2023-01-28 02:57:21,444 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3281 transitions. [2023-01-28 02:57:21,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3281 transitions. [2023-01-28 02:57:21,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:57:21,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3281 transitions. [2023-01-28 02:57:21,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 656.2) internal successors, (3281), 5 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:21,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:21,450 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:21,451 INFO L175 Difference]: Start difference. First operand has 109 places, 113 transitions, 1011 flow. Second operand 5 states and 3281 transitions. [2023-01-28 02:57:21,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 191 transitions, 1813 flow [2023-01-28 02:57:21,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 191 transitions, 1682 flow, removed 52 selfloop flow, removed 7 redundant places. [2023-01-28 02:57:21,615 INFO L231 Difference]: Finished difference. Result has 102 places, 115 transitions, 1055 flow [2023-01-28 02:57:21,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1055, PETRI_PLACES=102, PETRI_TRANSITIONS=115} [2023-01-28 02:57:21,615 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2023-01-28 02:57:21,615 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 115 transitions, 1055 flow [2023-01-28 02:57:21,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 638.0) internal successors, (3190), 5 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:21,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:57:21,616 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:57:21,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 02:57:21,616 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:57:21,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:57:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1385030174, now seen corresponding path program 3 times [2023-01-28 02:57:21,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:57:21,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599017948] [2023-01-28 02:57:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:21,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:57:21,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 02:57:21,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:57:21,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599017948] [2023-01-28 02:57:21,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599017948] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:57:21,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:57:21,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:57:21,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293623179] [2023-01-28 02:57:21,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:57:21,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 02:57:21,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:57:21,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 02:57:21,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 02:57:21,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 1608 [2023-01-28 02:57:21,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 115 transitions, 1055 flow. Second operand has 5 states, 5 states have (on average 638.0) internal successors, (3190), 5 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:21,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:57:21,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 1608 [2023-01-28 02:57:21,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:24,612 INFO L130 PetriNetUnfolder]: 13803/19295 cut-off events. [2023-01-28 02:57:24,612 INFO L131 PetriNetUnfolder]: For 54068/54068 co-relation queries the response was YES. [2023-01-28 02:57:24,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70466 conditions, 19295 events. 13803/19295 cut-off events. For 54068/54068 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 100053 event pairs, 4074 based on Foata normal form. 3/16634 useless extension candidates. Maximal degree in co-relation 70433. Up to 10414 conditions per place. [2023-01-28 02:57:24,829 INFO L137 encePairwiseOnDemand]: 1597/1608 looper letters, 141 selfloop transitions, 29 changer transitions 10/180 dead transitions. [2023-01-28 02:57:24,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 180 transitions, 1718 flow [2023-01-28 02:57:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:57:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:57:24,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3271 transitions. [2023-01-28 02:57:24,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068407960199005 [2023-01-28 02:57:24,836 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3271 transitions. [2023-01-28 02:57:24,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3271 transitions. [2023-01-28 02:57:24,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:57:24,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3271 transitions. [2023-01-28 02:57:24,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 654.2) internal successors, (3271), 5 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:24,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:24,863 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:24,863 INFO L175 Difference]: Start difference. First operand has 102 places, 115 transitions, 1055 flow. Second operand 5 states and 3271 transitions. [2023-01-28 02:57:24,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 180 transitions, 1718 flow [2023-01-28 02:57:25,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 180 transitions, 1672 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-01-28 02:57:25,004 INFO L231 Difference]: Finished difference. Result has 103 places, 114 transitions, 1027 flow [2023-01-28 02:57:25,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1027, PETRI_PLACES=103, PETRI_TRANSITIONS=114} [2023-01-28 02:57:25,004 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2023-01-28 02:57:25,004 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 114 transitions, 1027 flow [2023-01-28 02:57:25,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 638.0) internal successors, (3190), 5 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:25,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:57:25,005 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:57:25,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 02:57:25,005 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:57:25,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:57:25,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1385637435, now seen corresponding path program 1 times [2023-01-28 02:57:25,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:57:25,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32768978] [2023-01-28 02:57:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:57:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-01-28 02:57:25,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:57:25,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32768978] [2023-01-28 02:57:25,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32768978] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:57:25,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:57:25,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:57:25,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623060357] [2023-01-28 02:57:25,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:57:25,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:57:25,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:57:25,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:57:25,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:57:25,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1608 [2023-01-28 02:57:25,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 1027 flow. Second operand has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:25,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:57:25,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1608 [2023-01-28 02:57:25,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:28,134 INFO L130 PetriNetUnfolder]: 13589/18915 cut-off events. [2023-01-28 02:57:28,134 INFO L131 PetriNetUnfolder]: For 68131/68131 co-relation queries the response was YES. [2023-01-28 02:57:28,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76499 conditions, 18915 events. 13589/18915 cut-off events. For 68131/68131 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 96930 event pairs, 8294 based on Foata normal form. 34/16323 useless extension candidates. Maximal degree in co-relation 76466. Up to 18039 conditions per place. [2023-01-28 02:57:28,245 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 133 selfloop transitions, 6 changer transitions 3/142 dead transitions. [2023-01-28 02:57:28,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 142 transitions, 1435 flow [2023-01-28 02:57:28,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:57:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:57:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2678 transitions. [2023-01-28 02:57:28,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41635572139303484 [2023-01-28 02:57:28,247 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2678 transitions. [2023-01-28 02:57:28,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2678 transitions. [2023-01-28 02:57:28,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:57:28,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2678 transitions. [2023-01-28 02:57:28,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 669.5) internal successors, (2678), 4 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:28,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:28,253 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:28,253 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 1027 flow. Second operand 4 states and 2678 transitions. [2023-01-28 02:57:28,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 142 transitions, 1435 flow [2023-01-28 02:57:28,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 142 transitions, 1312 flow, removed 40 selfloop flow, removed 6 redundant places. [2023-01-28 02:57:28,405 INFO L231 Difference]: Finished difference. Result has 94 places, 112 transitions, 900 flow [2023-01-28 02:57:28,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=900, PETRI_PLACES=94, PETRI_TRANSITIONS=112} [2023-01-28 02:57:28,405 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2023-01-28 02:57:28,405 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 112 transitions, 900 flow [2023-01-28 02:57:28,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:28,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:57:28,406 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:57:28,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 02:57:28,406 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:57:28,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:57:28,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1997501473, now seen corresponding path program 2 times [2023-01-28 02:57:28,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:57:28,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010811399] [2023-01-28 02:57:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:28,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:57:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:28,765 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-01-28 02:57:28,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:57:28,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010811399] [2023-01-28 02:57:28,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010811399] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:57:28,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:57:28,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:57:28,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121027794] [2023-01-28 02:57:28,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:57:28,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:57:28,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:57:28,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:57:28,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:57:28,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1608 [2023-01-28 02:57:28,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 112 transitions, 900 flow. Second operand has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:28,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:57:28,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1608 [2023-01-28 02:57:28,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:31,207 INFO L130 PetriNetUnfolder]: 13367/18525 cut-off events. [2023-01-28 02:57:31,208 INFO L131 PetriNetUnfolder]: For 51781/51781 co-relation queries the response was YES. [2023-01-28 02:57:31,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70249 conditions, 18525 events. 13367/18525 cut-off events. For 51781/51781 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 93742 event pairs, 8230 based on Foata normal form. 6/15959 useless extension candidates. Maximal degree in co-relation 70220. Up to 18039 conditions per place. [2023-01-28 02:57:31,359 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 129 selfloop transitions, 1 changer transitions 8/138 dead transitions. [2023-01-28 02:57:31,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 138 transitions, 1277 flow [2023-01-28 02:57:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:57:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:57:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2676 transitions. [2023-01-28 02:57:31,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416044776119403 [2023-01-28 02:57:31,362 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2676 transitions. [2023-01-28 02:57:31,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2676 transitions. [2023-01-28 02:57:31,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:57:31,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2676 transitions. [2023-01-28 02:57:31,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 669.0) internal successors, (2676), 4 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:31,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:31,367 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:31,367 INFO L175 Difference]: Start difference. First operand has 94 places, 112 transitions, 900 flow. Second operand 4 states and 2676 transitions. [2023-01-28 02:57:31,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 138 transitions, 1277 flow [2023-01-28 02:57:31,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 138 transitions, 1275 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:57:31,495 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 840 flow [2023-01-28 02:57:31,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=840, PETRI_PLACES=96, PETRI_TRANSITIONS=108} [2023-01-28 02:57:31,495 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2023-01-28 02:57:31,495 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 840 flow [2023-01-28 02:57:31,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:31,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:57:31,496 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:57:31,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 02:57:31,496 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:57:31,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:57:31,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1082557347, now seen corresponding path program 3 times [2023-01-28 02:57:31,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:57:31,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125330309] [2023-01-28 02:57:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:31,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:57:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 02:57:31,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:57:31,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125330309] [2023-01-28 02:57:31,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125330309] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:57:31,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:57:31,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 02:57:31,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394836666] [2023-01-28 02:57:31,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:57:31,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 02:57:31,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:57:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 02:57:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 02:57:31,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1608 [2023-01-28 02:57:31,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 840 flow. Second operand has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:31,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:57:31,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1608 [2023-01-28 02:57:31,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:34,190 INFO L130 PetriNetUnfolder]: 13084/18059 cut-off events. [2023-01-28 02:57:34,191 INFO L131 PetriNetUnfolder]: For 48835/48835 co-relation queries the response was YES. [2023-01-28 02:57:34,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68447 conditions, 18059 events. 13084/18059 cut-off events. For 48835/48835 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 90097 event pairs, 2975 based on Foata normal form. 10/15587 useless extension candidates. Maximal degree in co-relation 68418. Up to 17847 conditions per place. [2023-01-28 02:57:34,322 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 111 selfloop transitions, 4 changer transitions 7/122 dead transitions. [2023-01-28 02:57:34,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 122 transitions, 1099 flow [2023-01-28 02:57:34,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 02:57:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 02:57:34,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2671 transitions. [2023-01-28 02:57:34,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152674129353234 [2023-01-28 02:57:34,325 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2671 transitions. [2023-01-28 02:57:34,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2671 transitions. [2023-01-28 02:57:34,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:57:34,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2671 transitions. [2023-01-28 02:57:34,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 667.75) internal successors, (2671), 4 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:34,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:34,330 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:34,330 INFO L175 Difference]: Start difference. First operand has 96 places, 108 transitions, 840 flow. Second operand 4 states and 2671 transitions. [2023-01-28 02:57:34,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 122 transitions, 1099 flow [2023-01-28 02:57:34,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 122 transitions, 1041 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-01-28 02:57:34,629 INFO L231 Difference]: Finished difference. Result has 92 places, 99 transitions, 694 flow [2023-01-28 02:57:34,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=694, PETRI_PLACES=92, PETRI_TRANSITIONS=99} [2023-01-28 02:57:34,629 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2023-01-28 02:57:34,629 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 99 transitions, 694 flow [2023-01-28 02:57:34,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:34,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:57:34,630 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:57:34,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 02:57:34,630 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:57:34,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:57:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash 275559464, now seen corresponding path program 1 times [2023-01-28 02:57:34,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:57:34,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213445492] [2023-01-28 02:57:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:34,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:57:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:57:36,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:57:36,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213445492] [2023-01-28 02:57:36,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213445492] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:57:36,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838016834] [2023-01-28 02:57:36,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:36,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:57:36,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:57:36,580 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:57:36,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 02:57:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:36,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-28 02:57:36,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:57:37,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 02:57:37,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-01-28 02:57:37,445 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 02:57:37,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:57:39,089 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (forall ((~ends_with_6~0.base Int) (v_ArrVal_1507 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1507) ~ends_with_6~0.base) c_~ends_with_6~0.offset) 256))))) (and (forall ((v_ArrVal_1507 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1507))) (or (= (mod (select (select .cse0 c_~ends_with_2~0.base) (+ c_~i_13~0 c_~ends_with_2~0.offset)) 256) 0) (forall ((~ends_with_6~0.base Int)) (< 0 (mod (select (select .cse0 ~ends_with_6~0.base) c_~ends_with_6~0.offset) 256)))))) (or (< c_~i_13~0 4) .cse1) (or (= (mod (mod c_~break_14~0 256) 4294967296) 0) .cse1) (forall ((~ends_with_6~0.base Int) (v_ArrVal_1507 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1507) ~ends_with_6~0.base))) (or (= (mod (select .cse2 (+ c_~i_13~0 c_~ends_with_6~0.offset)) 256) 0) (< 0 (mod (select .cse2 c_~ends_with_6~0.offset) 256))))))) is different from false [2023-01-28 02:57:39,390 INFO L321 Elim1Store]: treesize reduction 11, result has 83.1 percent of original size [2023-01-28 02:57:39,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 131 treesize of output 158 [2023-01-28 02:57:39,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:57:39,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 93 [2023-01-28 02:57:39,419 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:57:39,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 85 [2023-01-28 02:57:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:57:39,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838016834] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:57:39,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:57:39,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 15] total 39 [2023-01-28 02:57:39,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411011645] [2023-01-28 02:57:39,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:57:39,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-01-28 02:57:39,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:57:39,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-01-28 02:57:39,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1294, Unknown=3, NotChecked=74, Total=1560 [2023-01-28 02:57:39,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 530 out of 1608 [2023-01-28 02:57:39,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 99 transitions, 694 flow. Second operand has 40 states, 40 states have (on average 532.75) internal successors, (21310), 40 states have internal predecessors, (21310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:57:39,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:57:39,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 530 of 1608 [2023-01-28 02:57:39,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:42,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 02:57:44,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 02:57:50,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 02:58:27,835 INFO L130 PetriNetUnfolder]: 83725/115832 cut-off events. [2023-01-28 02:58:27,835 INFO L131 PetriNetUnfolder]: For 220540/220540 co-relation queries the response was YES. [2023-01-28 02:58:28,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421808 conditions, 115832 events. 83725/115832 cut-off events. For 220540/220540 co-relation queries the response was YES. Maximal size of possible extension queue 2866. Compared 752272 event pairs, 6635 based on Foata normal form. 9/98981 useless extension candidates. Maximal degree in co-relation 421781. Up to 30687 conditions per place. [2023-01-28 02:58:28,824 INFO L137 encePairwiseOnDemand]: 1575/1608 looper letters, 2046 selfloop transitions, 685 changer transitions 551/3282 dead transitions. [2023-01-28 02:58:28,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 3282 transitions, 26785 flow [2023-01-28 02:58:28,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-01-28 02:58:28,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2023-01-28 02:58:28,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 75777 transitions. [2023-01-28 02:58:28,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33902877697841727 [2023-01-28 02:58:28,885 INFO L72 ComplementDD]: Start complementDD. Operand 139 states and 75777 transitions. [2023-01-28 02:58:28,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 75777 transitions. [2023-01-28 02:58:28,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:58:28,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 139 states and 75777 transitions. [2023-01-28 02:58:28,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 140 states, 139 states have (on average 545.158273381295) internal successors, (75777), 139 states have internal predecessors, (75777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:58:29,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 140 states, 140 states have (on average 1608.0) internal successors, (225120), 140 states have internal predecessors, (225120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:58:29,204 INFO L81 ComplementDD]: Finished complementDD. Result has 140 states, 140 states have (on average 1608.0) internal successors, (225120), 140 states have internal predecessors, (225120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:58:29,205 INFO L175 Difference]: Start difference. First operand has 92 places, 99 transitions, 694 flow. Second operand 139 states and 75777 transitions. [2023-01-28 02:58:29,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 3282 transitions, 26785 flow [2023-01-28 02:58:55,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 3282 transitions, 26409 flow, removed 164 selfloop flow, removed 2 redundant places. [2023-01-28 02:58:55,163 INFO L231 Difference]: Finished difference. Result has 322 places, 848 transitions, 8828 flow [2023-01-28 02:58:55,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=139, PETRI_FLOW=8828, PETRI_PLACES=322, PETRI_TRANSITIONS=848} [2023-01-28 02:58:55,164 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 276 predicate places. [2023-01-28 02:58:55,164 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 848 transitions, 8828 flow [2023-01-28 02:58:55,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 532.75) internal successors, (21310), 40 states have internal predecessors, (21310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:58:55,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:58:55,166 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:58:55,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 02:58:55,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:58:55,372 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:58:55,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:58:55,373 INFO L85 PathProgramCache]: Analyzing trace with hash -923697284, now seen corresponding path program 2 times [2023-01-28 02:58:55,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:58:55,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539616660] [2023-01-28 02:58:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:58:55,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:58:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:58:57,459 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-28 02:58:57,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:58:57,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539616660] [2023-01-28 02:58:57,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539616660] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:58:57,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587657096] [2023-01-28 02:58:57,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:58:57,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:58:57,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:58:57,461 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:58:57,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 02:58:57,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:58:57,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:58:57,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 02:58:57,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:58:58,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2023-01-28 02:58:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-28 02:58:58,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:59:03,183 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 02:59:03,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 113 treesize of output 444 Received shutdown request... [2023-01-28 03:10:01,278 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 [2023-01-28 03:10:01,279 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 03:10:01,279 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-28 03:10:01,282 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 03:10:01,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 03:10:01,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-28 03:10:01,490 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 53 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 58ms.. [2023-01-28 03:10:01,491 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 03:10:01,491 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 03:10:01,491 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 03:10:01,492 INFO L445 BasicCegarLoop]: Path program histogram: [8, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2023-01-28 03:10:01,494 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 03:10:01,494 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 03:10:01,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 03:10:01 BasicIcfg [2023-01-28 03:10:01,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 03:10:01,496 INFO L158 Benchmark]: Toolchain (without parser) took 836246.43ms. Allocated memory was 396.4MB in the beginning and 11.1GB in the end (delta: 10.7GB). Free memory was 329.1MB in the beginning and 4.1GB in the end (delta: -3.8GB). Peak memory consumption was 8.4GB. Max. memory is 16.0GB. [2023-01-28 03:10:01,496 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 396.4MB. Free memory is still 340.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 03:10:01,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.57ms. Allocated memory is still 396.4MB. Free memory was 328.8MB in the beginning and 314.4MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 03:10:01,496 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.72ms. Allocated memory is still 396.4MB. Free memory was 314.4MB in the beginning and 310.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 03:10:01,496 INFO L158 Benchmark]: Boogie Preprocessor took 72.27ms. Allocated memory was 396.4MB in the beginning and 507.5MB in the end (delta: 111.1MB). Free memory was 310.2MB in the beginning and 466.3MB in the end (delta: -156.1MB). Peak memory consumption was 11.5MB. Max. memory is 16.0GB. [2023-01-28 03:10:01,497 INFO L158 Benchmark]: RCFGBuilder took 768.86ms. Allocated memory is still 507.5MB. Free memory was 466.3MB in the beginning and 420.8MB in the end (delta: 45.5MB). Peak memory consumption was 46.1MB. Max. memory is 16.0GB. [2023-01-28 03:10:01,497 INFO L158 Benchmark]: TraceAbstraction took 835164.92ms. Allocated memory was 507.5MB in the beginning and 11.1GB in the end (delta: 10.6GB). Free memory was 419.8MB in the beginning and 4.1GB in the end (delta: -3.7GB). Peak memory consumption was 8.4GB. Max. memory is 16.0GB. [2023-01-28 03:10:01,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 396.4MB. Free memory is still 340.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 194.57ms. Allocated memory is still 396.4MB. Free memory was 328.8MB in the beginning and 314.4MB in the end (delta: 14.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.72ms. Allocated memory is still 396.4MB. Free memory was 314.4MB in the beginning and 310.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 72.27ms. Allocated memory was 396.4MB in the beginning and 507.5MB in the end (delta: 111.1MB). Free memory was 310.2MB in the beginning and 466.3MB in the end (delta: -156.1MB). Peak memory consumption was 11.5MB. Max. memory is 16.0GB. * RCFGBuilder took 768.86ms. Allocated memory is still 507.5MB. Free memory was 466.3MB in the beginning and 420.8MB in the end (delta: 45.5MB). Peak memory consumption was 46.1MB. Max. memory is 16.0GB. * TraceAbstraction took 835164.92ms. Allocated memory was 507.5MB in the beginning and 11.1GB in the end (delta: 10.6GB). Free memory was 419.8MB in the beginning and 4.1GB in the end (delta: -3.7GB). Peak memory consumption was 8.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 21.6s, 641 PlacesBefore, 46 PlacesAfterwards, 704 TransitionsBefore, 48 TransitionsAfterwards, 157248 CoEnabledTransitionPairs, 8 FixpointIterations, 194 TrivialSequentialCompositions, 394 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 211 ConcurrentYvCompositions, 61 ChoiceCompositions, 891 TotalNumberOfCompositions, 150057 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 140944, independent: 140751, independent conditional: 0, independent unconditional: 140751, dependent: 193, dependent conditional: 0, dependent unconditional: 193, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 97310, independent: 97260, independent conditional: 0, independent unconditional: 97260, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 140944, independent: 43491, independent conditional: 0, independent unconditional: 43491, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 97310, unknown conditional: 0, unknown unconditional: 97310] , Statistics on independence cache: Total cache size (in pairs): 184, Positive cache size: 164, Positive conditional cache size: 0, Positive unconditional cache size: 164, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 164]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 53 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 58ms.. - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 53 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 58ms.. - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 53 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 58ms.. - TimeoutResultAtElement [Line: 157]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 53 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 58ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 1059 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 835.0s, OverallIterations: 24, TraceHistogramMax: 5, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 129.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 21.9s, HoareTripleCheckerStatistics: 80 mSolverCounterUnknown, 2589 SdHoareTripleChecker+Valid, 20.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2589 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 19.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2092 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 138 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16434 IncrementalHoareTripleChecker+Invalid, 18744 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 138 mSolverCounterUnsat, 0 mSDtfsCounter, 16434 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 704 GetRequests, 417 SyntacticMatches, 7 SemanticMatches, 280 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 10553 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8828occurred in iteration=23, InterpolantAutomatonStates: 246, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 1092 NumberOfCodeBlocks, 1068 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1246 ConstructedInterpolants, 4 QuantifiedInterpolants, 7699 SizeOfPredicates, 140 NumberOfNonLiveVariables, 2332 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 35 InterpolantComputations, 18 PerfectInterpolantSequences, 1261/1325 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown