/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/popl20-mult-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:00:12,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:00:12,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:00:12,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 05:00:12,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 05:00:12,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 05:00:12,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 05:00:12,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 05:00:12,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 05:00:12,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 05:00:12,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 05:00:12,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 05:00:12,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:00:12,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:00:12,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:00:12,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:00:12,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:00:12,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:00:12,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:00:12,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:00:12,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:00:12,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:00:12,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:00:12,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:00:12,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 05:00:12,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 05:00:12,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 05:00:12,735 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 05:00:12,736 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 05:00:12,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 05:00:12,737 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 05:00:12,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 05:00:12,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 05:00:12,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 05:00:12,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 05:00:12,739 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 05:00:12,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 05:00:12,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 05:00:12,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:00:12,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:00:12,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:00:12,748 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 05:00:12,764 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:00:12,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:00:12,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:00:12,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:00:12,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:00:12,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:00:12,765 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:00:12,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:00:12,766 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:00:12,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:00:12,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:00:12,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:00:12,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:00:12,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:00:12,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:00:12,766 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:00:12,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:00:12,767 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:00:12,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:00:12,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:00:12,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:00:12,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:00:12,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:00:12,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:00:12,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:00:12,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:00:12,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:00:12,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:00:12,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:00:12,768 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:00:12,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:00:12,768 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:00:12,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:00:12,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:00:12,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:00:12,986 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:00:12,987 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:00:12,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2023-01-28 05:00:14,082 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:00:14,200 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:00:14,200 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-4.wvr.c [2023-01-28 05:00:14,205 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8d84f516/6a05b0c58953405d89cdf8b06e1cb105/FLAG813ed209d [2023-01-28 05:00:14,217 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8d84f516/6a05b0c58953405d89cdf8b06e1cb105 [2023-01-28 05:00:14,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:00:14,220 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:00:14,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:00:14,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:00:14,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:00:14,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce57946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14, skipping insertion in model container [2023-01-28 05:00:14,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:00:14,248 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:00:14,350 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/popl20-mult-4.wvr.c[2612,2625] [2023-01-28 05:00:14,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:00:14,359 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:00:14,377 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/popl20-mult-4.wvr.c[2612,2625] [2023-01-28 05:00:14,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:00:14,383 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:00:14,383 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:00:14,387 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:00:14,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14 WrapperNode [2023-01-28 05:00:14,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:00:14,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:00:14,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:00:14,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:00:14,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,410 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 119 [2023-01-28 05:00:14,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:00:14,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:00:14,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:00:14,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:00:14,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,426 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:00:14,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:00:14,438 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:00:14,438 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:00:14,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14" (1/1) ... [2023-01-28 05:00:14,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:00:14,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:00:14,459 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 05:00:14,477 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 05:00:14,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:00:14,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:00:14,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:00:14,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:00:14,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:00:14,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 05:00:14,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 05:00:14,498 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 05:00:14,498 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 05:00:14,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:00:14,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:00:14,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:00:14,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 05:00:14,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 05:00:14,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:00:14,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:00:14,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:00:14,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:00:14,502 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 05:00:14,570 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:00:14,572 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:00:14,840 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:00:14,882 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:00:14,882 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 05:00:14,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:00:14 BoogieIcfgContainer [2023-01-28 05:00:14,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:00:14,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:00:14,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:00:14,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:00:14,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:00:14" (1/3) ... [2023-01-28 05:00:14,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22041659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:00:14, skipping insertion in model container [2023-01-28 05:00:14,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:00:14" (2/3) ... [2023-01-28 05:00:14,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22041659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:00:14, skipping insertion in model container [2023-01-28 05:00:14,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:00:14" (3/3) ... [2023-01-28 05:00:14,890 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2023-01-28 05:00:14,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:00:14,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:00:14,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:00:14,961 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 05:00:14,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 128 transitions, 288 flow [2023-01-28 05:00:15,055 INFO L130 PetriNetUnfolder]: 10/124 cut-off events. [2023-01-28 05:00:15,056 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:00:15,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 124 events. 10/124 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 95 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-01-28 05:00:15,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 128 transitions, 288 flow [2023-01-28 05:00:15,072 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 112 transitions, 248 flow [2023-01-28 05:00:15,074 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:00:15,080 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 112 transitions, 248 flow [2023-01-28 05:00:15,081 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 112 transitions, 248 flow [2023-01-28 05:00:15,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 248 flow [2023-01-28 05:00:15,106 INFO L130 PetriNetUnfolder]: 10/112 cut-off events. [2023-01-28 05:00:15,106 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:00:15,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 112 events. 10/112 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 94 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-01-28 05:00:15,108 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-01-28 05:00:17,677 INFO L134 LiptonReduction]: Checked pairs total: 2598 [2023-01-28 05:00:17,678 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-01-28 05:00:17,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:00:17,724 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;@2425563e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:00:17,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 05:00:17,740 INFO L130 PetriNetUnfolder]: 4/28 cut-off events. [2023-01-28 05:00:17,741 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:00:17,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:17,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:17,742 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 2 more)] === [2023-01-28 05:00:17,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:17,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1971920350, now seen corresponding path program 1 times [2023-01-28 05:00:17,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:17,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017217443] [2023-01-28 05:00:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:17,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:18,159 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 05:00:18,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:18,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017217443] [2023-01-28 05:00:18,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017217443] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:00:18,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:00:18,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 05:00:18,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746404581] [2023-01-28 05:00:18,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:18,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:00:18,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:18,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:00:18,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:00:18,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 222 [2023-01-28 05:00:18,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:18,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:18,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 222 [2023-01-28 05:00:18,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:18,381 INFO L130 PetriNetUnfolder]: 1343/1736 cut-off events. [2023-01-28 05:00:18,382 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2023-01-28 05:00:18,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3612 conditions, 1736 events. 1343/1736 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5850 event pairs, 215 based on Foata normal form. 1/1054 useless extension candidates. Maximal degree in co-relation 2691. Up to 1515 conditions per place. [2023-01-28 05:00:18,394 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 39 selfloop transitions, 3 changer transitions 3/49 dead transitions. [2023-01-28 05:00:18,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 233 flow [2023-01-28 05:00:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:00:18,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:00:18,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-01-28 05:00:18,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540540540540541 [2023-01-28 05:00:18,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-01-28 05:00:18,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-01-28 05:00:18,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:18,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-01-28 05:00:18,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:18,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:18,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:18,416 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 369 transitions. [2023-01-28 05:00:18,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 233 flow [2023-01-28 05:00:18,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 49 transitions, 203 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 05:00:18,422 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 89 flow [2023-01-28 05:00:18,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-01-28 05:00:18,425 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-01-28 05:00:18,426 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 89 flow [2023-01-28 05:00:18,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:18,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:18,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:18,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:00:18,427 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 2 more)] === [2023-01-28 05:00:18,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash 550150448, now seen corresponding path program 1 times [2023-01-28 05:00:18,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:18,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996570416] [2023-01-28 05:00:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:18,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:18,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:18,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996570416] [2023-01-28 05:00:18,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996570416] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:00:18,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:00:18,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:00:18,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837119701] [2023-01-28 05:00:18,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:18,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:00:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:18,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:00:18,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:00:18,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2023-01-28 05:00:18,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:18,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:18,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2023-01-28 05:00:18,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:18,895 INFO L130 PetriNetUnfolder]: 1929/2707 cut-off events. [2023-01-28 05:00:18,895 INFO L131 PetriNetUnfolder]: For 828/828 co-relation queries the response was YES. [2023-01-28 05:00:18,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6276 conditions, 2707 events. 1929/2707 cut-off events. For 828/828 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12322 event pairs, 489 based on Foata normal form. 304/2995 useless extension candidates. Maximal degree in co-relation 2470. Up to 1349 conditions per place. [2023-01-28 05:00:18,907 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 74 selfloop transitions, 4 changer transitions 2/82 dead transitions. [2023-01-28 05:00:18,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 82 transitions, 384 flow [2023-01-28 05:00:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:00:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:00:18,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2023-01-28 05:00:18,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018018018018018 [2023-01-28 05:00:18,911 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2023-01-28 05:00:18,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2023-01-28 05:00:18,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:18,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2023-01-28 05:00:18,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:18,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:18,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:18,916 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 89 flow. Second operand 5 states and 557 transitions. [2023-01-28 05:00:18,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 82 transitions, 384 flow [2023-01-28 05:00:18,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 82 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:00:18,919 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 134 flow [2023-01-28 05:00:18,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-01-28 05:00:18,919 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2023-01-28 05:00:18,919 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 134 flow [2023-01-28 05:00:18,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:18,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:18,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:18,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:00:18,920 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 2 more)] === [2023-01-28 05:00:18,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:18,921 INFO L85 PathProgramCache]: Analyzing trace with hash -634446788, now seen corresponding path program 2 times [2023-01-28 05:00:18,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:18,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188116007] [2023-01-28 05:00:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:18,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:19,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:19,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188116007] [2023-01-28 05:00:19,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188116007] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:00:19,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:00:19,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:00:19,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760700484] [2023-01-28 05:00:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:19,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:00:19,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:19,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:00:19,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:00:19,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 222 [2023-01-28 05:00:19,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:19,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:19,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 222 [2023-01-28 05:00:19,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:19,250 INFO L130 PetriNetUnfolder]: 1807/2582 cut-off events. [2023-01-28 05:00:19,251 INFO L131 PetriNetUnfolder]: For 2758/3083 co-relation queries the response was YES. [2023-01-28 05:00:19,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7767 conditions, 2582 events. 1807/2582 cut-off events. For 2758/3083 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12128 event pairs, 489 based on Foata normal form. 400/2953 useless extension candidates. Maximal degree in co-relation 1682. Up to 1640 conditions per place. [2023-01-28 05:00:19,264 INFO L137 encePairwiseOnDemand]: 218/222 looper letters, 54 selfloop transitions, 4 changer transitions 7/69 dead transitions. [2023-01-28 05:00:19,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 69 transitions, 381 flow [2023-01-28 05:00:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:00:19,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:00:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2023-01-28 05:00:19,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112612612612613 [2023-01-28 05:00:19,266 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2023-01-28 05:00:19,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2023-01-28 05:00:19,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:19,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2023-01-28 05:00:19,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:19,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:19,268 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:19,269 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 134 flow. Second operand 4 states and 454 transitions. [2023-01-28 05:00:19,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 69 transitions, 381 flow [2023-01-28 05:00:19,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 374 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 05:00:19,274 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 160 flow [2023-01-28 05:00:19,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-01-28 05:00:19,276 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2023-01-28 05:00:19,278 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 160 flow [2023-01-28 05:00:19,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:19,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:19,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:19,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:00:19,280 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 2 more)] === [2023-01-28 05:00:19,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1967310179, now seen corresponding path program 1 times [2023-01-28 05:00:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:19,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465989602] [2023-01-28 05:00:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:19,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:19,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:19,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465989602] [2023-01-28 05:00:19,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465989602] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:00:19,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:00:19,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:00:19,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144495268] [2023-01-28 05:00:19,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:19,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:00:19,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:19,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:00:19,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:00:19,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2023-01-28 05:00:19,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:19,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:19,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2023-01-28 05:00:19,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:19,829 INFO L130 PetriNetUnfolder]: 2391/3500 cut-off events. [2023-01-28 05:00:19,829 INFO L131 PetriNetUnfolder]: For 6576/6968 co-relation queries the response was YES. [2023-01-28 05:00:19,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10873 conditions, 3500 events. 2391/3500 cut-off events. For 6576/6968 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 18396 event pairs, 729 based on Foata normal form. 569/4038 useless extension candidates. Maximal degree in co-relation 4402. Up to 1997 conditions per place. [2023-01-28 05:00:19,849 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 63 selfloop transitions, 5 changer transitions 18/88 dead transitions. [2023-01-28 05:00:19,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 88 transitions, 514 flow [2023-01-28 05:00:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:00:19,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:00:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2023-01-28 05:00:19,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4990990990990991 [2023-01-28 05:00:19,855 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2023-01-28 05:00:19,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2023-01-28 05:00:19,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:19,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2023-01-28 05:00:19,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:19,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:19,858 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:19,858 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 160 flow. Second operand 5 states and 554 transitions. [2023-01-28 05:00:19,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 88 transitions, 514 flow [2023-01-28 05:00:19,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 88 transitions, 509 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 05:00:19,866 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 200 flow [2023-01-28 05:00:19,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-01-28 05:00:19,868 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 11 predicate places. [2023-01-28 05:00:19,868 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 200 flow [2023-01-28 05:00:19,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:19,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:19,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:19,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 05:00:19,869 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 2 more)] === [2023-01-28 05:00:19,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash -630595977, now seen corresponding path program 2 times [2023-01-28 05:00:19,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:19,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004188135] [2023-01-28 05:00:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:19,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:19,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:19,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004188135] [2023-01-28 05:00:19,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004188135] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:00:19,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:00:19,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:00:19,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974502322] [2023-01-28 05:00:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:19,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:00:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:19,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:00:19,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:00:19,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 222 [2023-01-28 05:00:19,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:19,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:19,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 222 [2023-01-28 05:00:19,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:20,266 INFO L130 PetriNetUnfolder]: 2636/3791 cut-off events. [2023-01-28 05:00:20,266 INFO L131 PetriNetUnfolder]: For 12510/13050 co-relation queries the response was YES. [2023-01-28 05:00:20,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14035 conditions, 3791 events. 2636/3791 cut-off events. For 12510/13050 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 19034 event pairs, 704 based on Foata normal form. 474/4113 useless extension candidates. Maximal degree in co-relation 8693. Up to 1833 conditions per place. [2023-01-28 05:00:20,290 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 63 selfloop transitions, 10 changer transitions 1/79 dead transitions. [2023-01-28 05:00:20,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 79 transitions, 570 flow [2023-01-28 05:00:20,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:00:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:00:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2023-01-28 05:00:20,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112612612612613 [2023-01-28 05:00:20,292 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2023-01-28 05:00:20,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2023-01-28 05:00:20,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:20,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2023-01-28 05:00:20,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:20,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:20,295 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:20,296 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 200 flow. Second operand 4 states and 454 transitions. [2023-01-28 05:00:20,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 79 transitions, 570 flow [2023-01-28 05:00:20,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 79 transitions, 549 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-01-28 05:00:20,306 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 321 flow [2023-01-28 05:00:20,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=321, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2023-01-28 05:00:20,309 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-01-28 05:00:20,309 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 321 flow [2023-01-28 05:00:20,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:20,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:20,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:20,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 05:00:20,310 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 2 more)] === [2023-01-28 05:00:20,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash 373265492, now seen corresponding path program 3 times [2023-01-28 05:00:20,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:20,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890832031] [2023-01-28 05:00:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:20,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:20,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:20,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890832031] [2023-01-28 05:00:20,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890832031] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:00:20,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:00:20,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:00:20,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539062584] [2023-01-28 05:00:20,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:20,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:00:20,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:20,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:00:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:00:20,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 222 [2023-01-28 05:00:20,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:20,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:20,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 222 [2023-01-28 05:00:20,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:20,801 INFO L130 PetriNetUnfolder]: 3959/5512 cut-off events. [2023-01-28 05:00:20,801 INFO L131 PetriNetUnfolder]: For 27139/27835 co-relation queries the response was YES. [2023-01-28 05:00:20,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23963 conditions, 5512 events. 3959/5512 cut-off events. For 27139/27835 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 27821 event pairs, 1419 based on Foata normal form. 655/6035 useless extension candidates. Maximal degree in co-relation 11708. Up to 3327 conditions per place. [2023-01-28 05:00:20,832 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 69 selfloop transitions, 19 changer transitions 5/97 dead transitions. [2023-01-28 05:00:20,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 97 transitions, 845 flow [2023-01-28 05:00:20,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:00:20,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:00:20,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2023-01-28 05:00:20,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123873873873874 [2023-01-28 05:00:20,834 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2023-01-28 05:00:20,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2023-01-28 05:00:20,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:20,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2023-01-28 05:00:20,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:20,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:20,836 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:20,836 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 321 flow. Second operand 4 states and 455 transitions. [2023-01-28 05:00:20,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 97 transitions, 845 flow [2023-01-28 05:00:20,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 97 transitions, 810 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-01-28 05:00:20,848 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 542 flow [2023-01-28 05:00:20,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=542, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2023-01-28 05:00:20,849 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 17 predicate places. [2023-01-28 05:00:20,849 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 542 flow [2023-01-28 05:00:20,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:20,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:20,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:20,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 05:00:20,850 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 2 more)] === [2023-01-28 05:00:20,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:20,850 INFO L85 PathProgramCache]: Analyzing trace with hash 913151625, now seen corresponding path program 3 times [2023-01-28 05:00:20,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:20,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677301995] [2023-01-28 05:00:20,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:20,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:20,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:20,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677301995] [2023-01-28 05:00:20,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677301995] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:00:20,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:00:20,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:00:20,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335425186] [2023-01-28 05:00:20,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:20,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:00:20,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:20,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:00:20,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:00:20,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 222 [2023-01-28 05:00:20,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 542 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:20,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:20,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 222 [2023-01-28 05:00:20,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:21,428 INFO L130 PetriNetUnfolder]: 4069/5629 cut-off events. [2023-01-28 05:00:21,429 INFO L131 PetriNetUnfolder]: For 34585/35242 co-relation queries the response was YES. [2023-01-28 05:00:21,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26334 conditions, 5629 events. 4069/5629 cut-off events. For 34585/35242 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 28061 event pairs, 1051 based on Foata normal form. 543/6085 useless extension candidates. Maximal degree in co-relation 17951. Up to 4642 conditions per place. [2023-01-28 05:00:21,460 INFO L137 encePairwiseOnDemand]: 218/222 looper letters, 70 selfloop transitions, 9 changer transitions 12/95 dead transitions. [2023-01-28 05:00:21,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 95 transitions, 932 flow [2023-01-28 05:00:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:00:21,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:00:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2023-01-28 05:00:21,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067567567567568 [2023-01-28 05:00:21,462 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 450 transitions. [2023-01-28 05:00:21,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 450 transitions. [2023-01-28 05:00:21,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:21,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 450 transitions. [2023-01-28 05:00:21,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:21,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:21,464 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:21,464 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 542 flow. Second operand 4 states and 450 transitions. [2023-01-28 05:00:21,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 95 transitions, 932 flow [2023-01-28 05:00:21,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 95 transitions, 922 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 05:00:21,482 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 588 flow [2023-01-28 05:00:21,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-01-28 05:00:21,482 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-01-28 05:00:21,483 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 588 flow [2023-01-28 05:00:21,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:21,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:21,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:21,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 05:00:21,483 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 2 more)] === [2023-01-28 05:00:21,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:21,484 INFO L85 PathProgramCache]: Analyzing trace with hash -254193814, now seen corresponding path program 4 times [2023-01-28 05:00:21,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:21,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689460768] [2023-01-28 05:00:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:21,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:21,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:21,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689460768] [2023-01-28 05:00:21,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689460768] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:00:21,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:00:21,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:00:21,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792880478] [2023-01-28 05:00:21,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:21,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:00:21,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:21,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:00:21,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:00:21,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2023-01-28 05:00:21,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 588 flow. Second operand has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:21,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:21,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2023-01-28 05:00:21,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:22,085 INFO L130 PetriNetUnfolder]: 4191/5821 cut-off events. [2023-01-28 05:00:22,085 INFO L131 PetriNetUnfolder]: For 34875/35391 co-relation queries the response was YES. [2023-01-28 05:00:22,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27011 conditions, 5821 events. 4191/5821 cut-off events. For 34875/35391 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 29329 event pairs, 1433 based on Foata normal form. 467/6264 useless extension candidates. Maximal degree in co-relation 21531. Up to 4101 conditions per place. [2023-01-28 05:00:22,126 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 87 selfloop transitions, 16 changer transitions 21/126 dead transitions. [2023-01-28 05:00:22,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 126 transitions, 1224 flow [2023-01-28 05:00:22,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:00:22,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:00:22,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 655 transitions. [2023-01-28 05:00:22,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49174174174174173 [2023-01-28 05:00:22,129 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 655 transitions. [2023-01-28 05:00:22,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 655 transitions. [2023-01-28 05:00:22,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:22,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 655 transitions. [2023-01-28 05:00:22,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.16666666666667) internal successors, (655), 6 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:22,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:22,132 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:22,132 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 588 flow. Second operand 6 states and 655 transitions. [2023-01-28 05:00:22,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 126 transitions, 1224 flow [2023-01-28 05:00:22,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 126 transitions, 1176 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-01-28 05:00:22,152 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 691 flow [2023-01-28 05:00:22,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=691, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2023-01-28 05:00:22,153 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-01-28 05:00:22,153 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 691 flow [2023-01-28 05:00:22,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.8) internal successors, (499), 5 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:22,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:22,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:22,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 05:00:22,154 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 2 more)] === [2023-01-28 05:00:22,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:22,154 INFO L85 PathProgramCache]: Analyzing trace with hash 48622009, now seen corresponding path program 4 times [2023-01-28 05:00:22,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:22,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198293412] [2023-01-28 05:00:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:22,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:22,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:22,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198293412] [2023-01-28 05:00:22,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198293412] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:00:22,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:00:22,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:00:22,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400212964] [2023-01-28 05:00:22,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:22,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:00:22,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:22,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:00:22,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:00:22,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 222 [2023-01-28 05:00:22,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 691 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:22,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:22,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 222 [2023-01-28 05:00:22,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:22,828 INFO L130 PetriNetUnfolder]: 5266/7366 cut-off events. [2023-01-28 05:00:22,828 INFO L131 PetriNetUnfolder]: For 67702/70243 co-relation queries the response was YES. [2023-01-28 05:00:22,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35154 conditions, 7366 events. 5266/7366 cut-off events. For 67702/70243 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 38692 event pairs, 1726 based on Foata normal form. 1773/8952 useless extension candidates. Maximal degree in co-relation 26456. Up to 4880 conditions per place. [2023-01-28 05:00:22,863 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 117 selfloop transitions, 6 changer transitions 0/129 dead transitions. [2023-01-28 05:00:22,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 129 transitions, 1596 flow [2023-01-28 05:00:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:00:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:00:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2023-01-28 05:00:22,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2023-01-28 05:00:22,864 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2023-01-28 05:00:22,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2023-01-28 05:00:22,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:22,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2023-01-28 05:00:22,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:22,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:22,867 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:22,867 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 691 flow. Second operand 4 states and 448 transitions. [2023-01-28 05:00:22,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 129 transitions, 1596 flow [2023-01-28 05:00:22,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 129 transitions, 1533 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-01-28 05:00:22,883 INFO L231 Difference]: Finished difference. Result has 65 places, 71 transitions, 809 flow [2023-01-28 05:00:22,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=809, PETRI_PLACES=65, PETRI_TRANSITIONS=71} [2023-01-28 05:00:22,883 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2023-01-28 05:00:22,883 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 71 transitions, 809 flow [2023-01-28 05:00:22,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:22,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:22,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:22,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 05:00:22,884 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 2 more)] === [2023-01-28 05:00:22,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:22,885 INFO L85 PathProgramCache]: Analyzing trace with hash -234274435, now seen corresponding path program 5 times [2023-01-28 05:00:22,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:22,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680450359] [2023-01-28 05:00:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:22,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:22,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680450359] [2023-01-28 05:00:22,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680450359] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:00:22,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:00:22,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:00:22,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059607548] [2023-01-28 05:00:22,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:22,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:00:22,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:22,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:00:22,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:00:22,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 222 [2023-01-28 05:00:22,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 71 transitions, 809 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:22,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:22,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 222 [2023-01-28 05:00:22,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:23,430 INFO L130 PetriNetUnfolder]: 4779/6700 cut-off events. [2023-01-28 05:00:23,431 INFO L131 PetriNetUnfolder]: For 55435/57405 co-relation queries the response was YES. [2023-01-28 05:00:23,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36636 conditions, 6700 events. 4779/6700 cut-off events. For 55435/57405 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 34177 event pairs, 1447 based on Foata normal form. 1495/8061 useless extension candidates. Maximal degree in co-relation 29093. Up to 4406 conditions per place. [2023-01-28 05:00:23,463 INFO L137 encePairwiseOnDemand]: 217/222 looper letters, 82 selfloop transitions, 15 changer transitions 12/115 dead transitions. [2023-01-28 05:00:23,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 115 transitions, 1347 flow [2023-01-28 05:00:23,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:00:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:00:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2023-01-28 05:00:23,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5112612612612613 [2023-01-28 05:00:23,465 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2023-01-28 05:00:23,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2023-01-28 05:00:23,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:23,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2023-01-28 05:00:23,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:23,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:23,467 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:23,468 INFO L175 Difference]: Start difference. First operand has 65 places, 71 transitions, 809 flow. Second operand 4 states and 454 transitions. [2023-01-28 05:00:23,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 115 transitions, 1347 flow [2023-01-28 05:00:23,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 115 transitions, 1328 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 05:00:23,488 INFO L231 Difference]: Finished difference. Result has 69 places, 73 transitions, 876 flow [2023-01-28 05:00:23,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=876, PETRI_PLACES=69, PETRI_TRANSITIONS=73} [2023-01-28 05:00:23,489 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-01-28 05:00:23,489 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 73 transitions, 876 flow [2023-01-28 05:00:23,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:23,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:23,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:23,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 05:00:23,490 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 2 more)] === [2023-01-28 05:00:23,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:23,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1251327380, now seen corresponding path program 1 times [2023-01-28 05:00:23,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:23,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563271652] [2023-01-28 05:00:23,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:23,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:00:23,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:23,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563271652] [2023-01-28 05:00:23,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563271652] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:00:23,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:00:23,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:00:23,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243774974] [2023-01-28 05:00:23,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:23,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:00:23,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:23,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:00:23,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:00:23,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2023-01-28 05:00:23,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 73 transitions, 876 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:23,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:23,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2023-01-28 05:00:23,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:24,123 INFO L130 PetriNetUnfolder]: 4201/5794 cut-off events. [2023-01-28 05:00:24,123 INFO L131 PetriNetUnfolder]: For 59445/60555 co-relation queries the response was YES. [2023-01-28 05:00:24,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32881 conditions, 5794 events. 4201/5794 cut-off events. For 59445/60555 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 27820 event pairs, 1667 based on Foata normal form. 1024/6763 useless extension candidates. Maximal degree in co-relation 26313. Up to 4049 conditions per place. [2023-01-28 05:00:24,166 INFO L137 encePairwiseOnDemand]: 217/222 looper letters, 78 selfloop transitions, 13 changer transitions 18/112 dead transitions. [2023-01-28 05:00:24,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 112 transitions, 1365 flow [2023-01-28 05:00:24,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:00:24,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:00:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 535 transitions. [2023-01-28 05:00:24,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481981981981982 [2023-01-28 05:00:24,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 535 transitions. [2023-01-28 05:00:24,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 535 transitions. [2023-01-28 05:00:24,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:24,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 535 transitions. [2023-01-28 05:00:24,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:24,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:24,172 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:24,172 INFO L175 Difference]: Start difference. First operand has 69 places, 73 transitions, 876 flow. Second operand 5 states and 535 transitions. [2023-01-28 05:00:24,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 112 transitions, 1365 flow [2023-01-28 05:00:24,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 112 transitions, 1304 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-01-28 05:00:24,209 INFO L231 Difference]: Finished difference. Result has 72 places, 73 transitions, 874 flow [2023-01-28 05:00:24,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=874, PETRI_PLACES=72, PETRI_TRANSITIONS=73} [2023-01-28 05:00:24,209 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2023-01-28 05:00:24,209 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 73 transitions, 874 flow [2023-01-28 05:00:24,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:24,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:24,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:24,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 05:00:24,210 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 2 more)] === [2023-01-28 05:00:24,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1898023995, now seen corresponding path program 1 times [2023-01-28 05:00:24,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:24,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691953292] [2023-01-28 05:00:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:24,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:24,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:24,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691953292] [2023-01-28 05:00:24,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691953292] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:00:24,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:00:24,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 05:00:24,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161875145] [2023-01-28 05:00:24,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:24,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 05:00:24,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:24,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 05:00:24,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-28 05:00:24,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2023-01-28 05:00:24,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 73 transitions, 874 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:24,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:24,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2023-01-28 05:00:24,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:24,790 INFO L130 PetriNetUnfolder]: 4197/5653 cut-off events. [2023-01-28 05:00:24,790 INFO L131 PetriNetUnfolder]: For 59686/60734 co-relation queries the response was YES. [2023-01-28 05:00:24,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34240 conditions, 5653 events. 4197/5653 cut-off events. For 59686/60734 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 25502 event pairs, 1565 based on Foata normal form. 1008/6589 useless extension candidates. Maximal degree in co-relation 30326. Up to 4391 conditions per place. [2023-01-28 05:00:24,825 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 83 selfloop transitions, 29 changer transitions 6/121 dead transitions. [2023-01-28 05:00:24,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 121 transitions, 1562 flow [2023-01-28 05:00:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:00:24,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:00:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2023-01-28 05:00:24,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2023-01-28 05:00:24,827 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2023-01-28 05:00:24,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2023-01-28 05:00:24,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:24,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2023-01-28 05:00:24,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:24,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:24,830 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:24,830 INFO L175 Difference]: Start difference. First operand has 72 places, 73 transitions, 874 flow. Second operand 5 states and 537 transitions. [2023-01-28 05:00:24,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 121 transitions, 1562 flow [2023-01-28 05:00:24,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 121 transitions, 1428 flow, removed 52 selfloop flow, removed 4 redundant places. [2023-01-28 05:00:24,863 INFO L231 Difference]: Finished difference. Result has 71 places, 86 transitions, 1079 flow [2023-01-28 05:00:24,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1079, PETRI_PLACES=71, PETRI_TRANSITIONS=86} [2023-01-28 05:00:24,864 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 33 predicate places. [2023-01-28 05:00:24,864 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 86 transitions, 1079 flow [2023-01-28 05:00:24,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:24,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:24,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:24,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 05:00:24,865 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 2 more)] === [2023-01-28 05:00:24,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:24,865 INFO L85 PathProgramCache]: Analyzing trace with hash 967516647, now seen corresponding path program 1 times [2023-01-28 05:00:24,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:24,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827281515] [2023-01-28 05:00:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:24,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:24,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:24,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827281515] [2023-01-28 05:00:24,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827281515] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:00:24,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738328078] [2023-01-28 05:00:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:24,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:00:24,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:00:24,986 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 05:00:25,005 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 05:00:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:25,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 05:00:25,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:00:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:25,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:00:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:25,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738328078] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 05:00:25,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 05:00:25,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2023-01-28 05:00:25,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890662705] [2023-01-28 05:00:25,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:00:25,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:00:25,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:25,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:00:25,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-28 05:00:25,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 222 [2023-01-28 05:00:25,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 86 transitions, 1079 flow. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:25,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:25,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 222 [2023-01-28 05:00:25,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:25,977 INFO L130 PetriNetUnfolder]: 5554/7244 cut-off events. [2023-01-28 05:00:25,977 INFO L131 PetriNetUnfolder]: For 84222/86425 co-relation queries the response was YES. [2023-01-28 05:00:25,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45650 conditions, 7244 events. 5554/7244 cut-off events. For 84222/86425 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 31186 event pairs, 1070 based on Foata normal form. 1098/8191 useless extension candidates. Maximal degree in co-relation 36019. Up to 6002 conditions per place. [2023-01-28 05:00:26,042 INFO L137 encePairwiseOnDemand]: 217/222 looper letters, 116 selfloop transitions, 19 changer transitions 1/143 dead transitions. [2023-01-28 05:00:26,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 143 transitions, 1973 flow [2023-01-28 05:00:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:00:26,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:00:26,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2023-01-28 05:00:26,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-01-28 05:00:26,044 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 444 transitions. [2023-01-28 05:00:26,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 444 transitions. [2023-01-28 05:00:26,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:26,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 444 transitions. [2023-01-28 05:00:26,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:26,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:26,047 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:26,047 INFO L175 Difference]: Start difference. First operand has 71 places, 86 transitions, 1079 flow. Second operand 4 states and 444 transitions. [2023-01-28 05:00:26,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 143 transitions, 1973 flow [2023-01-28 05:00:26,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 143 transitions, 1871 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-01-28 05:00:26,098 INFO L231 Difference]: Finished difference. Result has 70 places, 93 transitions, 1158 flow [2023-01-28 05:00:26,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1158, PETRI_PLACES=70, PETRI_TRANSITIONS=93} [2023-01-28 05:00:26,099 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2023-01-28 05:00:26,099 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 93 transitions, 1158 flow [2023-01-28 05:00:26,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:26,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:26,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:26,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 05:00:26,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 05:00:26,306 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 2 more)] === [2023-01-28 05:00:26,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:26,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1526123081, now seen corresponding path program 2 times [2023-01-28 05:00:26,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:26,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625478973] [2023-01-28 05:00:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:26,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:26,420 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 05:00:26,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:26,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625478973] [2023-01-28 05:00:26,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625478973] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:00:26,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694578083] [2023-01-28 05:00:26,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:00:26,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:00:26,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:00:26,439 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 05:00:26,444 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 05:00:26,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:00:26,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:00:26,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 05:00:26,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:00:26,594 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 05:00:26,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:00:26,651 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 05:00:26,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694578083] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:00:26,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:00:26,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-01-28 05:00:26,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499216069] [2023-01-28 05:00:26,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:00:26,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 05:00:26,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:26,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 05:00:26,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-01-28 05:00:26,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2023-01-28 05:00:26,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 93 transitions, 1158 flow. Second operand has 8 states, 8 states have (on average 99.5) internal successors, (796), 8 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:26,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:26,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2023-01-28 05:00:26,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:27,412 INFO L130 PetriNetUnfolder]: 6710/8604 cut-off events. [2023-01-28 05:00:27,412 INFO L131 PetriNetUnfolder]: For 104664/105795 co-relation queries the response was YES. [2023-01-28 05:00:27,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57175 conditions, 8604 events. 6710/8604 cut-off events. For 104664/105795 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 35602 event pairs, 1400 based on Foata normal form. 1197/9756 useless extension candidates. Maximal degree in co-relation 41583. Up to 5421 conditions per place. [2023-01-28 05:00:27,494 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 135 selfloop transitions, 97 changer transitions 2/239 dead transitions. [2023-01-28 05:00:27,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 239 transitions, 3638 flow [2023-01-28 05:00:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:00:27,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:00:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 645 transitions. [2023-01-28 05:00:27,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48423423423423423 [2023-01-28 05:00:27,497 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 645 transitions. [2023-01-28 05:00:27,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 645 transitions. [2023-01-28 05:00:27,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:27,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 645 transitions. [2023-01-28 05:00:27,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.5) internal successors, (645), 6 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:27,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:27,504 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:27,504 INFO L175 Difference]: Start difference. First operand has 70 places, 93 transitions, 1158 flow. Second operand 6 states and 645 transitions. [2023-01-28 05:00:27,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 239 transitions, 3638 flow [2023-01-28 05:00:27,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 239 transitions, 3376 flow, removed 114 selfloop flow, removed 1 redundant places. [2023-01-28 05:00:27,601 INFO L231 Difference]: Finished difference. Result has 77 places, 175 transitions, 2755 flow [2023-01-28 05:00:27,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=1082, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2755, PETRI_PLACES=77, PETRI_TRANSITIONS=175} [2023-01-28 05:00:27,603 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 39 predicate places. [2023-01-28 05:00:27,603 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 175 transitions, 2755 flow [2023-01-28 05:00:27,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.5) internal successors, (796), 8 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:27,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:27,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:27,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 05:00:27,810 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,SelfDestructingSolverStorable13 [2023-01-28 05:00:27,811 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 2 more)] === [2023-01-28 05:00:27,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:27,812 INFO L85 PathProgramCache]: Analyzing trace with hash 423727133, now seen corresponding path program 1 times [2023-01-28 05:00:27,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:27,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821654679] [2023-01-28 05:00:27,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:27,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:00:27,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:27,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821654679] [2023-01-28 05:00:27,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821654679] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:00:27,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504869257] [2023-01-28 05:00:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:27,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:00:27,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:00:27,945 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 05:00:27,946 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 05:00:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:28,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 05:00:28,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:00:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:00:28,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:00:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:00:28,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504869257] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:00:28,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:00:28,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-01-28 05:00:28,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576351902] [2023-01-28 05:00:28,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:00:28,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 05:00:28,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:28,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 05:00:28,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-28 05:00:28,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 222 [2023-01-28 05:00:28,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 175 transitions, 2755 flow. Second operand has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:28,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:28,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 222 [2023-01-28 05:00:28,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:29,673 INFO L130 PetriNetUnfolder]: 12306/16025 cut-off events. [2023-01-28 05:00:29,673 INFO L131 PetriNetUnfolder]: For 236807/241514 co-relation queries the response was YES. [2023-01-28 05:00:29,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110797 conditions, 16025 events. 12306/16025 cut-off events. For 236807/241514 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 76960 event pairs, 1296 based on Foata normal form. 3116/17982 useless extension candidates. Maximal degree in co-relation 98264. Up to 10285 conditions per place. [2023-01-28 05:00:29,768 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 162 selfloop transitions, 167 changer transitions 3/344 dead transitions. [2023-01-28 05:00:29,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 344 transitions, 5614 flow [2023-01-28 05:00:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:00:29,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:00:29,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 487 transitions. [2023-01-28 05:00:29,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484234234234234 [2023-01-28 05:00:29,770 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 487 transitions. [2023-01-28 05:00:29,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 487 transitions. [2023-01-28 05:00:29,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:29,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 487 transitions. [2023-01-28 05:00:29,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:29,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:29,773 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:29,773 INFO L175 Difference]: Start difference. First operand has 77 places, 175 transitions, 2755 flow. Second operand 4 states and 487 transitions. [2023-01-28 05:00:29,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 344 transitions, 5614 flow [2023-01-28 05:00:29,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 344 transitions, 5400 flow, removed 84 selfloop flow, removed 2 redundant places. [2023-01-28 05:00:29,875 INFO L231 Difference]: Finished difference. Result has 79 places, 307 transitions, 5508 flow [2023-01-28 05:00:29,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=5508, PETRI_PLACES=79, PETRI_TRANSITIONS=307} [2023-01-28 05:00:29,875 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2023-01-28 05:00:29,875 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 307 transitions, 5508 flow [2023-01-28 05:00:29,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:29,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:29,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:00:29,881 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 05:00:30,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:00:30,081 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 2 more)] === [2023-01-28 05:00:30,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:30,081 INFO L85 PathProgramCache]: Analyzing trace with hash 147049617, now seen corresponding path program 2 times [2023-01-28 05:00:30,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:30,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002055050] [2023-01-28 05:00:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:30,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:30,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:30,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:30,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002055050] [2023-01-28 05:00:30,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002055050] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:00:30,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143564972] [2023-01-28 05:00:30,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:00:30,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:00:30,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:00:30,278 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 05:00:30,280 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 05:00:30,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:00:30,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:00:30,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 05:00:30,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:00:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:30,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:00:30,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:00:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143564972] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:00:30,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:00:30,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-01-28 05:00:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552952785] [2023-01-28 05:00:30,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:00:30,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 05:00:30,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:30,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 05:00:30,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-01-28 05:00:30,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 222 [2023-01-28 05:00:30,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 307 transitions, 5508 flow. Second operand has 9 states, 9 states have (on average 110.66666666666667) internal successors, (996), 9 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:30,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:30,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 222 [2023-01-28 05:00:30,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:34,203 INFO L130 PetriNetUnfolder]: 23620/30836 cut-off events. [2023-01-28 05:00:34,203 INFO L131 PetriNetUnfolder]: For 595698/603632 co-relation queries the response was YES. [2023-01-28 05:00:34,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239377 conditions, 30836 events. 23620/30836 cut-off events. For 595698/603632 co-relation queries the response was YES. Maximal size of possible extension queue 1530. Compared 162725 event pairs, 2059 based on Foata normal form. 4919/33922 useless extension candidates. Maximal degree in co-relation 212854. Up to 19599 conditions per place. [2023-01-28 05:00:34,444 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 181 selfloop transitions, 379 changer transitions 3/575 dead transitions. [2023-01-28 05:00:34,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 575 transitions, 10577 flow [2023-01-28 05:00:34,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:00:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:00:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 614 transitions. [2023-01-28 05:00:34,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531531531531532 [2023-01-28 05:00:34,447 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 614 transitions. [2023-01-28 05:00:34,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 614 transitions. [2023-01-28 05:00:34,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:34,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 614 transitions. [2023-01-28 05:00:34,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:34,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:34,452 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:34,452 INFO L175 Difference]: Start difference. First operand has 79 places, 307 transitions, 5508 flow. Second operand 5 states and 614 transitions. [2023-01-28 05:00:34,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 575 transitions, 10577 flow [2023-01-28 05:00:34,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 575 transitions, 10383 flow, removed 97 selfloop flow, removed 0 redundant places. [2023-01-28 05:00:34,891 INFO L231 Difference]: Finished difference. Result has 85 places, 519 transitions, 10439 flow [2023-01-28 05:00:34,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=5314, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10439, PETRI_PLACES=85, PETRI_TRANSITIONS=519} [2023-01-28 05:00:34,891 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 47 predicate places. [2023-01-28 05:00:34,891 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 519 transitions, 10439 flow [2023-01-28 05:00:34,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.66666666666667) internal successors, (996), 9 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:34,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:34,892 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 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 05:00:34,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 05:00:35,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 05:00:35,099 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 2 more)] === [2023-01-28 05:00:35,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:35,099 INFO L85 PathProgramCache]: Analyzing trace with hash 263795595, now seen corresponding path program 3 times [2023-01-28 05:00:35,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:35,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173665394] [2023-01-28 05:00:35,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:35,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:00:35,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:35,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173665394] [2023-01-28 05:00:35,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173665394] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:00:35,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504589958] [2023-01-28 05:00:35,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:00:35,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:00:35,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:00:35,229 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 05:00:35,230 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 05:00:35,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:00:35,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:00:35,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 05:00:35,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:00:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:00:35,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:00:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:00:35,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504589958] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:00:35,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:00:35,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-01-28 05:00:35,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380338955] [2023-01-28 05:00:35,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:00:35,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:00:35,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:35,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:00:35,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:00:35,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 222 [2023-01-28 05:00:35,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 519 transitions, 10439 flow. Second operand has 14 states, 14 states have (on average 96.92857142857143) internal successors, (1357), 14 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:35,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:35,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 222 [2023-01-28 05:00:35,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:00:51,141 INFO L130 PetriNetUnfolder]: 73165/99419 cut-off events. [2023-01-28 05:00:51,141 INFO L131 PetriNetUnfolder]: For 1652660/1658110 co-relation queries the response was YES. [2023-01-28 05:00:51,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736479 conditions, 99419 events. 73165/99419 cut-off events. For 1652660/1658110 co-relation queries the response was YES. Maximal size of possible extension queue 3861. Compared 647629 event pairs, 2626 based on Foata normal form. 7292/106701 useless extension candidates. Maximal degree in co-relation 696923. Up to 41573 conditions per place. [2023-01-28 05:00:52,053 INFO L137 encePairwiseOnDemand]: 213/222 looper letters, 2496 selfloop transitions, 935 changer transitions 0/3434 dead transitions. [2023-01-28 05:00:52,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 3434 transitions, 69490 flow [2023-01-28 05:00:52,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-28 05:00:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-01-28 05:00:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4932 transitions. [2023-01-28 05:00:52,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47268545140885565 [2023-01-28 05:00:52,062 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4932 transitions. [2023-01-28 05:00:52,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4932 transitions. [2023-01-28 05:00:52,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:00:52,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4932 transitions. [2023-01-28 05:00:52,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 104.93617021276596) internal successors, (4932), 47 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:52,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 222.0) internal successors, (10656), 48 states have internal predecessors, (10656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:52,083 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 222.0) internal successors, (10656), 48 states have internal predecessors, (10656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:52,083 INFO L175 Difference]: Start difference. First operand has 85 places, 519 transitions, 10439 flow. Second operand 47 states and 4932 transitions. [2023-01-28 05:00:52,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 3434 transitions, 69490 flow [2023-01-28 05:00:56,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 3434 transitions, 65338 flow, removed 2076 selfloop flow, removed 0 redundant places. [2023-01-28 05:00:56,388 INFO L231 Difference]: Finished difference. Result has 169 places, 1477 transitions, 31404 flow [2023-01-28 05:00:56,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=9821, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=31404, PETRI_PLACES=169, PETRI_TRANSITIONS=1477} [2023-01-28 05:00:56,389 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 131 predicate places. [2023-01-28 05:00:56,389 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 1477 transitions, 31404 flow [2023-01-28 05:00:56,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 96.92857142857143) internal successors, (1357), 14 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:56,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:00:56,390 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 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 05:00:56,408 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 05:00:56,594 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,SelfDestructingSolverStorable16 [2023-01-28 05:00:56,594 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 2 more)] === [2023-01-28 05:00:56,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:00:56,594 INFO L85 PathProgramCache]: Analyzing trace with hash -560273567, now seen corresponding path program 4 times [2023-01-28 05:00:56,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:00:56,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754755609] [2023-01-28 05:00:56,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:00:56,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:00:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:00:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:00:56,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:00:56,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754755609] [2023-01-28 05:00:56,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754755609] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:00:56,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618400319] [2023-01-28 05:00:56,713 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 05:00:56,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:00:56,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:00:56,730 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 05:00:56,731 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 05:00:56,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 05:00:56,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:00:56,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 05:00:56,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:00:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:00:56,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:00:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:00:56,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618400319] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:00:56,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:00:56,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-01-28 05:00:56,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855874535] [2023-01-28 05:00:56,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:00:56,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 05:00:56,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:00:56,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 05:00:56,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-01-28 05:00:56,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 222 [2023-01-28 05:00:56,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 1477 transitions, 31404 flow. Second operand has 14 states, 14 states have (on average 95.28571428571429) internal successors, (1334), 14 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:00:56,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:00:56,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 222 [2023-01-28 05:00:56,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:02:07,581 INFO L130 PetriNetUnfolder]: 182421/252798 cut-off events. [2023-01-28 05:02:07,582 INFO L131 PetriNetUnfolder]: For 7924589/7928551 co-relation queries the response was YES. [2023-01-28 05:02:09,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2305237 conditions, 252798 events. 182421/252798 cut-off events. For 7924589/7928551 co-relation queries the response was YES. Maximal size of possible extension queue 9717. Compared 1890504 event pairs, 7429 based on Foata normal form. 8952/261746 useless extension candidates. Maximal degree in co-relation 2174794. Up to 91989 conditions per place. [2023-01-28 05:02:11,464 INFO L137 encePairwiseOnDemand]: 213/222 looper letters, 4077 selfloop transitions, 2849 changer transitions 108/7052 dead transitions. [2023-01-28 05:02:11,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 7052 transitions, 157459 flow [2023-01-28 05:02:11,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-01-28 05:02:11,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-01-28 05:02:11,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 7804 transitions. [2023-01-28 05:02:11,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46870870870870873 [2023-01-28 05:02:11,476 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 7804 transitions. [2023-01-28 05:02:11,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 7804 transitions. [2023-01-28 05:02:11,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:02:11,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 7804 transitions. [2023-01-28 05:02:11,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 104.05333333333333) internal successors, (7804), 75 states have internal predecessors, (7804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:02:11,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 222.0) internal successors, (16872), 76 states have internal predecessors, (16872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:02:11,498 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 222.0) internal successors, (16872), 76 states have internal predecessors, (16872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:02:11,498 INFO L175 Difference]: Start difference. First operand has 169 places, 1477 transitions, 31404 flow. Second operand 75 states and 7804 transitions. [2023-01-28 05:02:11,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 7052 transitions, 157459 flow Received shutdown request... [2023-01-28 05:14:32,498 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 05:14:32,510 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 05:14:33,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2023-01-28 05:14:33,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown