/usr/bin/java -Xmx8000000000 -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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix018_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 11:47:27,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:47:27,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:47:27,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:47:27,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:47:27,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:47:27,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:47:27,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:47:27,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:47:27,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:47:27,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:47:27,221 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:47:27,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:47:27,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:47:27,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:47:27,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:47:27,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:47:27,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:47:27,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:47:27,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:47:27,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:47:27,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:47:27,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:47:27,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:47:27,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:47:27,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:47:27,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:47:27,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:47:27,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:47:27,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:47:27,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:47:27,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:47:27,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:47:27,254 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:47:27,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:47:27,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:47:27,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:47:27,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:47:27,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:47:27,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:47:27,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:47:27,258 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2022-12-13 11:47:27,293 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:47:27,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:47:27,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:47:27,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:47:27,296 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:47:27,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:47:27,297 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:47:27,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:47:27,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:47:27,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:47:27,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:47:27,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:47:27,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:47:27,298 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:47:27,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:47:27,298 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:47:27,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:47:27,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:47:27,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:47:27,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 11:47:27,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:47:27,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:47:27,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:47:27,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:47:27,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:47:27,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:47:27,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:47:27,306 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 11:47:27,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 11:47:27,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:47:27,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:47:27,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:47:27,644 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:47:27,645 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:47:27,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix018_tso.oepc.i [2022-12-13 11:47:28,873 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:47:29,183 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:47:29,184 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix018_tso.oepc.i [2022-12-13 11:47:29,195 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a104a76c7/35887d9726cf4b6aaeec5cedfa8cf6e3/FLAG30ccaeef2 [2022-12-13 11:47:29,210 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a104a76c7/35887d9726cf4b6aaeec5cedfa8cf6e3 [2022-12-13 11:47:29,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:47:29,213 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 11:47:29,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:47:29,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:47:29,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:47:29,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65796128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29, skipping insertion in model container [2022-12-13 11:47:29,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:47:29,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:47:29,417 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix018_tso.oepc.i[949,962] [2022-12-13 11:47:29,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,562 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,563 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,571 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,571 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,572 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,572 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,575 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,575 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,576 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,576 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,582 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,583 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,595 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,595 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,596 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,596 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,607 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,621 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:47:29,631 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:47:29,641 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix018_tso.oepc.i[949,962] [2022-12-13 11:47:29,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,682 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,684 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,685 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,689 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,690 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,693 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,695 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,696 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,696 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,706 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,713 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,714 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,715 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,716 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:47:29,724 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:47:29,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:47:29,766 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:47:29,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29 WrapperNode [2022-12-13 11:47:29,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:47:29,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:47:29,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:47:29,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:47:29,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,821 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 160 [2022-12-13 11:47:29,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:47:29,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:47:29,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:47:29,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:47:29,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,848 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:47:29,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:47:29,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:47:29,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:47:29,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29" (1/1) ... [2022-12-13 11:47:29,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:47:29,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:47:29,900 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) [2022-12-13 11:47:29,932 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 [2022-12-13 11:47:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:47:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:47:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:47:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:47:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:47:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 11:47:29,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 11:47:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 11:47:29,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 11:47:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 11:47:29,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 11:47:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 11:47:29,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 11:47:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:47:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:47:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:47:29,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:47:29,950 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 11:47:30,104 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 11:47:30,106 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:47:30,429 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 11:47:30,588 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:47:30,588 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:47:30,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:47:30 BoogieIcfgContainer [2022-12-13 11:47:30,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:47:30,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:47:30,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:47:30,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:47:30,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:47:29" (1/3) ... [2022-12-13 11:47:30,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f188b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:47:30, skipping insertion in model container [2022-12-13 11:47:30,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:47:29" (2/3) ... [2022-12-13 11:47:30,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f188b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:47:30, skipping insertion in model container [2022-12-13 11:47:30,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:47:30" (3/3) ... [2022-12-13 11:47:30,599 INFO L112 eAbstractionObserver]: Analyzing ICFG mix018_tso.oepc.i [2022-12-13 11:47:30,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:47:30,617 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 11:47:30,617 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:47:30,672 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 11:47:30,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 131 transitions, 282 flow [2022-12-13 11:47:30,782 INFO L130 PetriNetUnfolder]: 2/127 cut-off events. [2022-12-13 11:47:30,782 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:47:30,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 2/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 11:47:30,788 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 131 transitions, 282 flow [2022-12-13 11:47:30,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 127 transitions, 266 flow [2022-12-13 11:47:30,796 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:47:30,816 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 127 transitions, 266 flow [2022-12-13 11:47:30,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 266 flow [2022-12-13 11:47:30,870 INFO L130 PetriNetUnfolder]: 2/127 cut-off events. [2022-12-13 11:47:30,871 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:47:30,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 2/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 11:47:30,922 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 127 transitions, 266 flow [2022-12-13 11:47:30,922 INFO L226 LiptonReduction]: Number of co-enabled transitions 3150 [2022-12-13 11:47:40,852 INFO L241 LiptonReduction]: Total number of compositions: 98 [2022-12-13 11:47:40,866 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:47:40,871 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=REPEATED_LIPTON_PN, 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;@25ad3576, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 11:47:40,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 11:47:40,875 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-12-13 11:47:40,875 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:47:40,875 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:47:40,875 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 11:47:40,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:47:40,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:40,880 INFO L85 PathProgramCache]: Analyzing trace with hash 540957260, now seen corresponding path program 1 times [2022-12-13 11:47:40,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:40,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182221447] [2022-12-13 11:47:40,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:40,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:47:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:41,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182221447] [2022-12-13 11:47:41,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182221447] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:41,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:41,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:47:41,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063447713] [2022-12-13 11:47:41,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:41,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:47:41,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:41,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:47:41,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:47:41,293 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 79 [2022-12-13 11:47:41,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:41,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:47:41,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 79 [2022-12-13 11:47:41,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:47:49,250 INFO L130 PetriNetUnfolder]: 57424/81317 cut-off events. [2022-12-13 11:47:49,250 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-12-13 11:47:49,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157470 conditions, 81317 events. 57424/81317 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 4058. Compared 592700 event pairs, 22678 based on Foata normal form. 0/50894 useless extension candidates. Maximal degree in co-relation 157458. Up to 63597 conditions per place. [2022-12-13 11:47:49,565 INFO L137 encePairwiseOnDemand]: 73/79 looper letters, 44 selfloop transitions, 2 changer transitions 64/126 dead transitions. [2022-12-13 11:47:49,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 126 transitions, 490 flow [2022-12-13 11:47:49,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:47:49,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:47:49,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2022-12-13 11:47:49,578 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6962025316455697 [2022-12-13 11:47:49,580 INFO L175 Difference]: Start difference. First operand has 91 places, 79 transitions, 170 flow. Second operand 3 states and 165 transitions. [2022-12-13 11:47:49,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 126 transitions, 490 flow [2022-12-13 11:47:49,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 126 transitions, 484 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:47:49,589 INFO L231 Difference]: Finished difference. Result has 86 places, 43 transitions, 98 flow [2022-12-13 11:47:49,590 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=86, PETRI_TRANSITIONS=43} [2022-12-13 11:47:49,595 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -5 predicate places. [2022-12-13 11:47:49,596 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:47:49,596 INFO L89 Accepts]: Start accepts. Operand has 86 places, 43 transitions, 98 flow [2022-12-13 11:47:49,600 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:47:49,600 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:47:49,600 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 43 transitions, 98 flow [2022-12-13 11:47:49,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 43 transitions, 98 flow [2022-12-13 11:47:49,609 INFO L130 PetriNetUnfolder]: 0/43 cut-off events. [2022-12-13 11:47:49,609 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:47:49,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 43 events. 0/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 118 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 11:47:49,613 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 43 transitions, 98 flow [2022-12-13 11:47:49,613 INFO L226 LiptonReduction]: Number of co-enabled transitions 1100 [2022-12-13 11:47:49,834 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:47:49,837 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 242 [2022-12-13 11:47:49,837 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 98 flow [2022-12-13 11:47:49,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:49,837 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:47:49,838 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:47:49,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:47:49,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:47:49,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:49,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1560289086, now seen corresponding path program 1 times [2022-12-13 11:47:49,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:49,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102555045] [2022-12-13 11:47:49,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:49,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:47:50,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:50,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102555045] [2022-12-13 11:47:50,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102555045] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:50,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:50,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:47:50,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754124653] [2022-12-13 11:47:50,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:50,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:47:50,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:50,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:47:50,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:47:50,364 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 11:47:50,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:50,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:47:50,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 11:47:50,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:47:52,301 INFO L130 PetriNetUnfolder]: 18491/25685 cut-off events. [2022-12-13 11:47:52,301 INFO L131 PetriNetUnfolder]: For 1018/1018 co-relation queries the response was YES. [2022-12-13 11:47:52,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51851 conditions, 25685 events. 18491/25685 cut-off events. For 1018/1018 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 140164 event pairs, 5531 based on Foata normal form. 432/22203 useless extension candidates. Maximal degree in co-relation 51841. Up to 18145 conditions per place. [2022-12-13 11:47:52,484 INFO L137 encePairwiseOnDemand]: 40/43 looper letters, 47 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2022-12-13 11:47:52,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 232 flow [2022-12-13 11:47:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:47:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:47:52,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2022-12-13 11:47:52,486 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6434108527131783 [2022-12-13 11:47:52,486 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 98 flow. Second operand 3 states and 83 transitions. [2022-12-13 11:47:52,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 232 flow [2022-12-13 11:47:52,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:47:52,489 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 102 flow [2022-12-13 11:47:52,489 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2022-12-13 11:47:52,490 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -36 predicate places. [2022-12-13 11:47:52,490 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:47:52,490 INFO L89 Accepts]: Start accepts. Operand has 55 places, 43 transitions, 102 flow [2022-12-13 11:47:52,491 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:47:52,491 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:47:52,492 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 43 transitions, 102 flow [2022-12-13 11:47:52,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 43 transitions, 102 flow [2022-12-13 11:47:52,499 INFO L130 PetriNetUnfolder]: 0/43 cut-off events. [2022-12-13 11:47:52,499 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:47:52,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 43 events. 0/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 120 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2022-12-13 11:47:52,502 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 43 transitions, 102 flow [2022-12-13 11:47:52,502 INFO L226 LiptonReduction]: Number of co-enabled transitions 1094 [2022-12-13 11:47:52,559 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:47:52,561 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 71 [2022-12-13 11:47:52,562 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 100 flow [2022-12-13 11:47:52,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:52,562 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:47:52,562 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:47:52,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:47:52,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:47:52,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:52,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1123395189, now seen corresponding path program 1 times [2022-12-13 11:47:52,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:52,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076131474] [2022-12-13 11:47:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:52,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:53,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:47:53,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:53,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076131474] [2022-12-13 11:47:53,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076131474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:53,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:53,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:47:53,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483268061] [2022-12-13 11:47:53,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:53,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:47:53,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:53,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:47:53,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:47:53,210 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2022-12-13 11:47:53,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:53,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:47:53,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2022-12-13 11:47:53,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:47:54,939 INFO L130 PetriNetUnfolder]: 16587/23069 cut-off events. [2022-12-13 11:47:54,939 INFO L131 PetriNetUnfolder]: For 1740/1740 co-relation queries the response was YES. [2022-12-13 11:47:54,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48068 conditions, 23069 events. 16587/23069 cut-off events. For 1740/1740 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 133406 event pairs, 2835 based on Foata normal form. 90/19553 useless extension candidates. Maximal degree in co-relation 48057. Up to 21171 conditions per place. [2022-12-13 11:47:55,068 INFO L137 encePairwiseOnDemand]: 31/42 looper letters, 61 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2022-12-13 11:47:55,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 344 flow [2022-12-13 11:47:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:47:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:47:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2022-12-13 11:47:55,079 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2022-12-13 11:47:55,079 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 100 flow. Second operand 4 states and 118 transitions. [2022-12-13 11:47:55,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 344 flow [2022-12-13 11:47:55,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 83 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:47:55,086 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 173 flow [2022-12-13 11:47:55,086 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2022-12-13 11:47:55,087 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -34 predicate places. [2022-12-13 11:47:55,087 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:47:55,087 INFO L89 Accepts]: Start accepts. Operand has 57 places, 52 transitions, 173 flow [2022-12-13 11:47:55,089 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:47:55,089 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:47:55,090 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 52 transitions, 173 flow [2022-12-13 11:47:55,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 52 transitions, 173 flow [2022-12-13 11:47:55,157 INFO L130 PetriNetUnfolder]: 348/753 cut-off events. [2022-12-13 11:47:55,158 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2022-12-13 11:47:55,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1547 conditions, 753 events. 348/753 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4702 event pairs, 250 based on Foata normal form. 0/612 useless extension candidates. Maximal degree in co-relation 1537. Up to 492 conditions per place. [2022-12-13 11:47:55,167 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 52 transitions, 173 flow [2022-12-13 11:47:55,168 INFO L226 LiptonReduction]: Number of co-enabled transitions 1256 [2022-12-13 11:47:55,230 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [379] L753-->L756: Formula: (= v_~x~0_1 1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] and [571] $Ultimate##0-->L826: Formula: (and (= v_~z~0_44 1) (= v_P3Thread1of1ForFork1_~arg.offset_13 |v_P3Thread1of1ForFork1_#in~arg.offset_13|) (= v_~z~0_44 v_~__unbuffered_p3_EAX~0_117) (= v_P3Thread1of1ForFork1_~arg.base_13 |v_P3Thread1of1ForFork1_#in~arg.base_13|)) InVars {P3Thread1of1ForFork1_#in~arg.offset=|v_P3Thread1of1ForFork1_#in~arg.offset_13|, P3Thread1of1ForFork1_#in~arg.base=|v_P3Thread1of1ForFork1_#in~arg.base_13|} OutVars{P3Thread1of1ForFork1_#in~arg.offset=|v_P3Thread1of1ForFork1_#in~arg.offset_13|, ~__unbuffered_p3_EAX~0=v_~__unbuffered_p3_EAX~0_117, ~z~0=v_~z~0_44, P3Thread1of1ForFork1_~arg.offset=v_P3Thread1of1ForFork1_~arg.offset_13, P3Thread1of1ForFork1_#in~arg.base=|v_P3Thread1of1ForFork1_#in~arg.base_13|, P3Thread1of1ForFork1_~arg.base=v_P3Thread1of1ForFork1_~arg.base_13} AuxVars[] AssignedVars[~__unbuffered_p3_EAX~0, ~z~0, P3Thread1of1ForFork1_~arg.offset, P3Thread1of1ForFork1_~arg.base] [2022-12-13 11:47:55,253 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [379] L753-->L756: Formula: (= v_~x~0_1 1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] and [395] L806-->L813: Formula: (let ((.cse4 (not (= (mod v_~x$r_buff1_thd3~0_22 256) 0))) (.cse3 (not (= (mod v_~x$w_buff0_used~0_119 256) 0))) (.cse5 (not (= (mod v_~x$r_buff0_thd3~0_24 256) 0)))) (let ((.cse0 (and .cse5 (not (= (mod v_~x$w_buff0_used~0_120 256) 0)))) (.cse2 (and .cse5 .cse3)) (.cse1 (and (not (= (mod v_~x$w_buff1_used~0_101 256) 0)) .cse4))) (and (= (ite .cse0 v_~x$w_buff0~0_40 (ite .cse1 v_~x$w_buff1~0_37 v_~x~0_52)) v_~x~0_51) (= (ite .cse0 0 v_~x$w_buff0_used~0_120) v_~x$w_buff0_used~0_119) (= (ite .cse2 0 v_~x$r_buff0_thd3~0_24) v_~x$r_buff0_thd3~0_23) (= (ite (or .cse2 .cse1) 0 v_~x$w_buff1_used~0_101) v_~x$w_buff1_used~0_100) (= (ite (or (and (not (= (mod v_~x$r_buff0_thd3~0_23 256) 0)) .cse3) (and .cse4 (not (= (mod v_~x$w_buff1_used~0_100 256) 0)))) 0 v_~x$r_buff1_thd3~0_22) v_~x$r_buff1_thd3~0_21)))) InVars {~x$w_buff0~0=v_~x$w_buff0~0_40, ~x$w_buff1~0=v_~x$w_buff1~0_37, ~x$r_buff1_thd3~0=v_~x$r_buff1_thd3~0_22, ~x$w_buff1_used~0=v_~x$w_buff1_used~0_101, ~x$r_buff0_thd3~0=v_~x$r_buff0_thd3~0_24, ~x~0=v_~x~0_52, ~x$w_buff0_used~0=v_~x$w_buff0_used~0_120} OutVars{~x$w_buff0~0=v_~x$w_buff0~0_40, ~x$w_buff1~0=v_~x$w_buff1~0_37, ~x$r_buff1_thd3~0=v_~x$r_buff1_thd3~0_21, ~x$w_buff1_used~0=v_~x$w_buff1_used~0_100, ~x$r_buff0_thd3~0=v_~x$r_buff0_thd3~0_23, ~x~0=v_~x~0_51, ~x$w_buff0_used~0=v_~x$w_buff0_used~0_119} AuxVars[] AssignedVars[~x$r_buff1_thd3~0, ~x$w_buff1_used~0, ~x$r_buff0_thd3~0, ~x~0, ~x$w_buff0_used~0] [2022-12-13 11:47:55,324 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [379] L753-->L756: Formula: (= v_~x~0_1 1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] and [402] L826-->L829: Formula: (= v_~__unbuffered_p3_EBX~0_1 v_~a~0_2) InVars {~a~0=v_~a~0_2} OutVars{~a~0=v_~a~0_2, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_1} AuxVars[] AssignedVars[~__unbuffered_p3_EBX~0] [2022-12-13 11:47:55,334 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [379] L753-->L756: Formula: (= v_~x~0_1 1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] and [352] L865-->L871: Formula: (let ((.cse4 (not (= (mod v_~x$r_buff1_thd0~0_58 256) 0))) (.cse3 (not (= (mod v_~x$w_buff0_used~0_139 256) 0))) (.cse5 (not (= (mod v_~x$r_buff0_thd0~0_60 256) 0)))) (let ((.cse1 (and (not (= (mod v_~x$w_buff0_used~0_140 256) 0)) .cse5)) (.cse0 (and .cse5 .cse3)) (.cse2 (and (not (= 0 (mod v_~x$w_buff1_used~0_119 256))) .cse4))) (and (= (ite .cse0 0 v_~x$r_buff0_thd0~0_60) v_~x$r_buff0_thd0~0_59) (= v_~x~0_73 (ite .cse1 v_~x$w_buff0~0_54 (ite .cse2 v_~x$w_buff1~0_51 v_~x~0_74))) (= (ite .cse1 0 v_~x$w_buff0_used~0_140) v_~x$w_buff0_used~0_139) (= v_~x$r_buff1_thd0~0_57 (ite (or (and .cse3 (not (= (mod v_~x$r_buff0_thd0~0_59 256) 0))) (and .cse4 (not (= (mod v_~x$w_buff1_used~0_118 256) 0)))) 0 v_~x$r_buff1_thd0~0_58)) (= (ite (or .cse0 .cse2) 0 v_~x$w_buff1_used~0_119) v_~x$w_buff1_used~0_118)))) InVars {~x$w_buff0~0=v_~x$w_buff0~0_54, ~x$r_buff0_thd0~0=v_~x$r_buff0_thd0~0_60, ~x$w_buff1~0=v_~x$w_buff1~0_51, ~x$w_buff1_used~0=v_~x$w_buff1_used~0_119, ~x$r_buff1_thd0~0=v_~x$r_buff1_thd0~0_58, ~x~0=v_~x~0_74, ~x$w_buff0_used~0=v_~x$w_buff0_used~0_140} OutVars{~x$w_buff0~0=v_~x$w_buff0~0_54, ~x$r_buff0_thd0~0=v_~x$r_buff0_thd0~0_59, ~x$w_buff1~0=v_~x$w_buff1~0_51, ~x$w_buff1_used~0=v_~x$w_buff1_used~0_118, ~x$r_buff1_thd0~0=v_~x$r_buff1_thd0~0_57, ~x~0=v_~x~0_73, ~x$w_buff0_used~0=v_~x$w_buff0_used~0_139} AuxVars[] AssignedVars[~x$r_buff0_thd0~0, ~x$w_buff1_used~0, ~x$r_buff1_thd0~0, ~x~0, ~x$w_buff0_used~0] [2022-12-13 11:47:55,402 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [379] L753-->L756: Formula: (= v_~x~0_1 1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] and [394] L803-->L806: Formula: (= v_~__unbuffered_p2_EAX~0_1 v_~z~0_1) InVars {~z~0=v_~z~0_1} OutVars{~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_1, ~z~0=v_~z~0_1} AuxVars[] AssignedVars[~__unbuffered_p2_EAX~0] [2022-12-13 11:47:55,413 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [379] L753-->L756: Formula: (= v_~x~0_1 1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] and [472] $Ultimate##0-->L783: Formula: (and (= v_~x$r_buff1_thd4~0_37 v_~x$r_buff0_thd4~0_33) (= 2 v_~x$w_buff0~0_126) (= v_~x$w_buff0_used~0_238 v_~x$w_buff1_used~0_203) (not (= |v_P1Thread1of1ForFork2___VERIFIER_assert_~expression#1_11| 0)) (= v_~x$r_buff1_thd2~0_43 v_~x$r_buff0_thd2~0_65) (= |v_P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_11| (ite (not (and (not (= (mod v_~x$w_buff0_used~0_237 256) 0)) (not (= (mod v_~x$w_buff1_used~0_203 256) 0)))) 1 0)) (= |v_P1Thread1of1ForFork2_#in~arg#1.offset_7| |v_P1Thread1of1ForFork2_~arg#1.offset_7|) (= v_~x$r_buff1_thd1~0_43 v_~x$r_buff0_thd1~0_47) (= v_~x$r_buff0_thd0~0_107 v_~x$r_buff1_thd0~0_105) (= |v_P1Thread1of1ForFork2_~arg#1.base_7| |v_P1Thread1of1ForFork2_#in~arg#1.base_7|) (= v_~x$r_buff0_thd2~0_64 1) (= |v_P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_11| |v_P1Thread1of1ForFork2___VERIFIER_assert_~expression#1_11|) (= v_~x$r_buff1_thd3~0_62 v_~x$r_buff0_thd3~0_61) (= v_~x$w_buff0_used~0_237 1) (= v_~x$w_buff0~0_127 v_~x$w_buff1~0_114)) InVars {~x$w_buff0~0=v_~x$w_buff0~0_127, ~x$r_buff0_thd0~0=v_~x$r_buff0_thd0~0_107, ~x$r_buff0_thd1~0=v_~x$r_buff0_thd1~0_47, ~x$r_buff0_thd4~0=v_~x$r_buff0_thd4~0_33, ~x$r_buff0_thd3~0=v_~x$r_buff0_thd3~0_61, ~x$r_buff0_thd2~0=v_~x$r_buff0_thd2~0_65, P1Thread1of1ForFork2_#in~arg#1.base=|v_P1Thread1of1ForFork2_#in~arg#1.base_7|, ~x$w_buff0_used~0=v_~x$w_buff0_used~0_238, P1Thread1of1ForFork2_#in~arg#1.offset=|v_P1Thread1of1ForFork2_#in~arg#1.offset_7|} OutVars{~x$w_buff0~0=v_~x$w_buff0~0_126, P1Thread1of1ForFork2_~arg#1.base=|v_P1Thread1of1ForFork2_~arg#1.base_7|, ~x$r_buff0_thd0~0=v_~x$r_buff0_thd0~0_107, ~x$r_buff0_thd1~0=v_~x$r_buff0_thd1~0_47, ~x$w_buff1~0=v_~x$w_buff1~0_114, ~x$r_buff1_thd3~0=v_~x$r_buff1_thd3~0_62, ~x$r_buff1_thd2~0=v_~x$r_buff1_thd2~0_43, ~x$w_buff1_used~0=v_~x$w_buff1_used~0_203, ~x$r_buff1_thd1~0=v_~x$r_buff1_thd1~0_43, ~x$r_buff0_thd4~0=v_~x$r_buff0_thd4~0_33, ~x$r_buff0_thd3~0=v_~x$r_buff0_thd3~0_61, ~x$r_buff0_thd2~0=v_~x$r_buff0_thd2~0_64, ~x$r_buff1_thd0~0=v_~x$r_buff1_thd0~0_105, P1Thread1of1ForFork2_#in~arg#1.base=|v_P1Thread1of1ForFork2_#in~arg#1.base_7|, ~x$r_buff1_thd4~0=v_~x$r_buff1_thd4~0_37, ~x$w_buff0_used~0=v_~x$w_buff0_used~0_237, P1Thread1of1ForFork2___VERIFIER_assert_~expression#1=|v_P1Thread1of1ForFork2___VERIFIER_assert_~expression#1_11|, P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1=|v_P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_11|, P1Thread1of1ForFork2_~arg#1.offset=|v_P1Thread1of1ForFork2_~arg#1.offset_7|, P1Thread1of1ForFork2_#in~arg#1.offset=|v_P1Thread1of1ForFork2_#in~arg#1.offset_7|} AuxVars[] AssignedVars[~x$w_buff0~0, P1Thread1of1ForFork2_~arg#1.base, ~x$w_buff1~0, ~x$r_buff1_thd3~0, ~x$r_buff1_thd2~0, ~x$w_buff1_used~0, ~x$r_buff1_thd1~0, ~x$r_buff0_thd2~0, ~x$r_buff1_thd0~0, ~x$r_buff1_thd4~0, ~x$w_buff0_used~0, P1Thread1of1ForFork2___VERIFIER_assert_~expression#1, P1Thread1of1ForFork2___VERIFIER_assert_#in~expression#1, P1Thread1of1ForFork2_~arg#1.offset] [2022-12-13 11:47:55,574 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [379] L753-->L756: Formula: (= v_~x~0_1 1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] and [403] L829-->L836: Formula: (let ((.cse2 (not (= (mod v_~x$r_buff1_thd4~0_20 256) 0))) (.cse3 (not (= (mod v_~x$w_buff0_used~0_147 256) 0))) (.cse5 (not (= (mod v_~x$r_buff0_thd4~0_22 256) 0)))) (let ((.cse1 (and .cse3 .cse5)) (.cse0 (and (not (= (mod v_~x$w_buff1_used~0_127 256) 0)) .cse2)) (.cse4 (and (not (= 0 (mod v_~x$w_buff0_used~0_148 256))) .cse5))) (and (= v_~x$w_buff1_used~0_126 (ite (or .cse0 .cse1) 0 v_~x$w_buff1_used~0_127)) (= v_~x$r_buff1_thd4~0_19 (ite (or (and .cse2 (not (= (mod v_~x$w_buff1_used~0_126 256) 0))) (and .cse3 (not (= (mod v_~x$r_buff0_thd4~0_21 256) 0)))) 0 v_~x$r_buff1_thd4~0_20)) (= v_~x$r_buff0_thd4~0_21 (ite .cse1 0 v_~x$r_buff0_thd4~0_22)) (= v_~x~0_81 (ite .cse4 v_~x$w_buff0~0_58 (ite .cse0 v_~x$w_buff1~0_55 v_~x~0_82))) (= (ite .cse4 0 v_~x$w_buff0_used~0_148) v_~x$w_buff0_used~0_147)))) InVars {~x$w_buff0~0=v_~x$w_buff0~0_58, ~x$w_buff1~0=v_~x$w_buff1~0_55, ~x$w_buff1_used~0=v_~x$w_buff1_used~0_127, ~x$r_buff0_thd4~0=v_~x$r_buff0_thd4~0_22, ~x~0=v_~x~0_82, ~x$r_buff1_thd4~0=v_~x$r_buff1_thd4~0_20, ~x$w_buff0_used~0=v_~x$w_buff0_used~0_148} OutVars{~x$w_buff0~0=v_~x$w_buff0~0_58, ~x$w_buff1~0=v_~x$w_buff1~0_55, ~x$w_buff1_used~0=v_~x$w_buff1_used~0_126, ~x$r_buff0_thd4~0=v_~x$r_buff0_thd4~0_21, ~x~0=v_~x~0_81, ~x$r_buff1_thd4~0=v_~x$r_buff1_thd4~0_19, ~x$w_buff0_used~0=v_~x$w_buff0_used~0_147} AuxVars[] AssignedVars[~x$w_buff1_used~0, ~x$r_buff0_thd4~0, ~x~0, ~x$r_buff1_thd4~0, ~x$w_buff0_used~0] [2022-12-13 11:47:55,652 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:47:55,657 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 570 [2022-12-13 11:47:55,657 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 197 flow [2022-12-13 11:47:55,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:55,657 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:47:55,657 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:47:55,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:47:55,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:47:55,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:55,658 INFO L85 PathProgramCache]: Analyzing trace with hash -465513759, now seen corresponding path program 1 times [2022-12-13 11:47:55,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:55,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144864861] [2022-12-13 11:47:55,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:55,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:47:56,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:56,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144864861] [2022-12-13 11:47:56,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144864861] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:56,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:56,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:47:56,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88762613] [2022-12-13 11:47:56,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:56,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:47:56,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:56,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:47:56,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:47:56,440 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2022-12-13 11:47:56,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:56,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:47:56,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2022-12-13 11:47:56,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:47:57,851 INFO L130 PetriNetUnfolder]: 16759/23565 cut-off events. [2022-12-13 11:47:57,851 INFO L131 PetriNetUnfolder]: For 11892/11892 co-relation queries the response was YES. [2022-12-13 11:47:57,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59888 conditions, 23565 events. 16759/23565 cut-off events. For 11892/11892 co-relation queries the response was YES. Maximal size of possible extension queue 844. Compared 134311 event pairs, 6677 based on Foata normal form. 24/20021 useless extension candidates. Maximal degree in co-relation 59875. Up to 21750 conditions per place. [2022-12-13 11:47:58,002 INFO L137 encePairwiseOnDemand]: 31/50 looper letters, 61 selfloop transitions, 20 changer transitions 0/92 dead transitions. [2022-12-13 11:47:58,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 92 transitions, 541 flow [2022-12-13 11:47:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:47:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:47:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2022-12-13 11:47:58,004 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.625 [2022-12-13 11:47:58,004 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 197 flow. Second operand 4 states and 125 transitions. [2022-12-13 11:47:58,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 92 transitions, 541 flow [2022-12-13 11:47:58,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 541 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:47:58,011 INFO L231 Difference]: Finished difference. Result has 61 places, 70 transitions, 414 flow [2022-12-13 11:47:58,011 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=414, PETRI_PLACES=61, PETRI_TRANSITIONS=70} [2022-12-13 11:47:58,012 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -30 predicate places. [2022-12-13 11:47:58,012 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:47:58,012 INFO L89 Accepts]: Start accepts. Operand has 61 places, 70 transitions, 414 flow [2022-12-13 11:47:58,013 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:47:58,013 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:47:58,013 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 70 transitions, 414 flow [2022-12-13 11:47:58,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 70 transitions, 414 flow [2022-12-13 11:47:58,270 INFO L130 PetriNetUnfolder]: 715/1397 cut-off events. [2022-12-13 11:47:58,271 INFO L131 PetriNetUnfolder]: For 1026/1142 co-relation queries the response was YES. [2022-12-13 11:47:58,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4015 conditions, 1397 events. 715/1397 cut-off events. For 1026/1142 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9260 event pairs, 328 based on Foata normal form. 3/1150 useless extension candidates. Maximal degree in co-relation 4001. Up to 854 conditions per place. [2022-12-13 11:47:58,287 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 70 transitions, 414 flow [2022-12-13 11:47:58,288 INFO L226 LiptonReduction]: Number of co-enabled transitions 1496 [2022-12-13 11:47:58,307 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:47:58,312 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 300 [2022-12-13 11:47:58,313 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 70 transitions, 414 flow [2022-12-13 11:47:58,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:58,313 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:47:58,313 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:47:58,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:47:58,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:47:58,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:58,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1330850087, now seen corresponding path program 1 times [2022-12-13 11:47:58,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:58,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138979112] [2022-12-13 11:47:58,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:58,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:58,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:47:58,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:58,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138979112] [2022-12-13 11:47:58,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138979112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:58,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:58,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:47:58,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282415416] [2022-12-13 11:47:58,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:58,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:47:58,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:58,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:47:58,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:47:58,829 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2022-12-13 11:47:58,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 70 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:58,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:47:58,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2022-12-13 11:47:58,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:48:00,744 INFO L130 PetriNetUnfolder]: 19474/26905 cut-off events. [2022-12-13 11:48:00,745 INFO L131 PetriNetUnfolder]: For 25583/25583 co-relation queries the response was YES. [2022-12-13 11:48:00,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80122 conditions, 26905 events. 19474/26905 cut-off events. For 25583/25583 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 149328 event pairs, 6384 based on Foata normal form. 264/23060 useless extension candidates. Maximal degree in co-relation 80105. Up to 20243 conditions per place. [2022-12-13 11:48:00,948 INFO L137 encePairwiseOnDemand]: 31/50 looper letters, 106 selfloop transitions, 52 changer transitions 0/169 dead transitions. [2022-12-13 11:48:00,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 169 transitions, 1207 flow [2022-12-13 11:48:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:48:00,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:48:00,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2022-12-13 11:48:00,950 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6366666666666667 [2022-12-13 11:48:00,950 INFO L175 Difference]: Start difference. First operand has 61 places, 70 transitions, 414 flow. Second operand 6 states and 191 transitions. [2022-12-13 11:48:00,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 169 transitions, 1207 flow [2022-12-13 11:48:00,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 169 transitions, 1165 flow, removed 21 selfloop flow, removed 0 redundant places. [2022-12-13 11:48:00,966 INFO L231 Difference]: Finished difference. Result has 70 places, 103 transitions, 860 flow [2022-12-13 11:48:00,966 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=860, PETRI_PLACES=70, PETRI_TRANSITIONS=103} [2022-12-13 11:48:00,968 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -21 predicate places. [2022-12-13 11:48:00,968 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:48:00,968 INFO L89 Accepts]: Start accepts. Operand has 70 places, 103 transitions, 860 flow [2022-12-13 11:48:00,969 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:48:00,970 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:48:00,970 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 103 transitions, 860 flow [2022-12-13 11:48:00,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 103 transitions, 860 flow [2022-12-13 11:48:01,110 INFO L130 PetriNetUnfolder]: 921/1740 cut-off events. [2022-12-13 11:48:01,110 INFO L131 PetriNetUnfolder]: For 3103/3448 co-relation queries the response was YES. [2022-12-13 11:48:01,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7090 conditions, 1740 events. 921/1740 cut-off events. For 3103/3448 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 11605 event pairs, 263 based on Foata normal form. 3/1462 useless extension candidates. Maximal degree in co-relation 7070. Up to 995 conditions per place. [2022-12-13 11:48:01,127 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 103 transitions, 860 flow [2022-12-13 11:48:01,128 INFO L226 LiptonReduction]: Number of co-enabled transitions 2086 [2022-12-13 11:48:01,178 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:48:01,179 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 211 [2022-12-13 11:48:01,179 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 103 transitions, 860 flow [2022-12-13 11:48:01,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:01,179 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:48:01,179 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:01,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:48:01,180 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:48:01,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:01,180 INFO L85 PathProgramCache]: Analyzing trace with hash -494262849, now seen corresponding path program 2 times [2022-12-13 11:48:01,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:01,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578018686] [2022-12-13 11:48:01,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:01,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:01,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:01,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:01,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578018686] [2022-12-13 11:48:01,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578018686] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:01,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:01,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:48:01,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494937003] [2022-12-13 11:48:01,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:01,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:48:01,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:01,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:48:01,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:48:01,765 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2022-12-13 11:48:01,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 103 transitions, 860 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:01,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:48:01,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2022-12-13 11:48:01,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:48:04,380 INFO L130 PetriNetUnfolder]: 17577/25188 cut-off events. [2022-12-13 11:48:04,380 INFO L131 PetriNetUnfolder]: For 66401/67842 co-relation queries the response was YES. [2022-12-13 11:48:04,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93242 conditions, 25188 events. 17577/25188 cut-off events. For 66401/67842 co-relation queries the response was YES. Maximal size of possible extension queue 1039. Compared 153774 event pairs, 7212 based on Foata normal form. 121/21082 useless extension candidates. Maximal degree in co-relation 93219. Up to 20347 conditions per place. [2022-12-13 11:48:04,564 INFO L137 encePairwiseOnDemand]: 35/50 looper letters, 88 selfloop transitions, 31 changer transitions 0/144 dead transitions. [2022-12-13 11:48:04,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 144 transitions, 1297 flow [2022-12-13 11:48:04,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:48:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:48:04,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2022-12-13 11:48:04,565 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.64 [2022-12-13 11:48:04,565 INFO L175 Difference]: Start difference. First operand has 70 places, 103 transitions, 860 flow. Second operand 4 states and 128 transitions. [2022-12-13 11:48:04,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 144 transitions, 1297 flow [2022-12-13 11:48:04,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 144 transitions, 1281 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-12-13 11:48:04,593 INFO L231 Difference]: Finished difference. Result has 74 places, 109 transitions, 969 flow [2022-12-13 11:48:04,594 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=969, PETRI_PLACES=74, PETRI_TRANSITIONS=109} [2022-12-13 11:48:04,594 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -17 predicate places. [2022-12-13 11:48:04,594 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:48:04,594 INFO L89 Accepts]: Start accepts. Operand has 74 places, 109 transitions, 969 flow [2022-12-13 11:48:04,595 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:48:04,595 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:48:04,596 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 109 transitions, 969 flow [2022-12-13 11:48:04,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 109 transitions, 969 flow [2022-12-13 11:48:04,739 INFO L130 PetriNetUnfolder]: 1076/2047 cut-off events. [2022-12-13 11:48:04,739 INFO L131 PetriNetUnfolder]: For 4542/4920 co-relation queries the response was YES. [2022-12-13 11:48:04,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8540 conditions, 2047 events. 1076/2047 cut-off events. For 4542/4920 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 13921 event pairs, 333 based on Foata normal form. 4/1678 useless extension candidates. Maximal degree in co-relation 8517. Up to 1124 conditions per place. [2022-12-13 11:48:04,761 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 109 transitions, 969 flow [2022-12-13 11:48:04,761 INFO L226 LiptonReduction]: Number of co-enabled transitions 2216 [2022-12-13 11:48:04,769 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:48:04,770 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 176 [2022-12-13 11:48:04,770 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 109 transitions, 969 flow [2022-12-13 11:48:04,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:04,770 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:48:04,770 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:04,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:48:04,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:48:04,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:04,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1699655296, now seen corresponding path program 1 times [2022-12-13 11:48:04,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:04,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778841109] [2022-12-13 11:48:04,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:04,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:05,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:05,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778841109] [2022-12-13 11:48:05,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778841109] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:05,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:05,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:48:05,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136005624] [2022-12-13 11:48:05,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:05,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:48:05,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:05,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:48:05,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:48:05,111 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2022-12-13 11:48:05,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 109 transitions, 969 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:05,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:48:05,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2022-12-13 11:48:05,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:48:07,688 INFO L130 PetriNetUnfolder]: 19089/27247 cut-off events. [2022-12-13 11:48:07,688 INFO L131 PetriNetUnfolder]: For 85058/86409 co-relation queries the response was YES. [2022-12-13 11:48:07,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106229 conditions, 27247 events. 19089/27247 cut-off events. For 85058/86409 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 166876 event pairs, 5824 based on Foata normal form. 40/22715 useless extension candidates. Maximal degree in co-relation 106203. Up to 18802 conditions per place. [2022-12-13 11:48:08,078 INFO L137 encePairwiseOnDemand]: 39/50 looper letters, 102 selfloop transitions, 32 changer transitions 0/159 dead transitions. [2022-12-13 11:48:08,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 159 transitions, 1527 flow [2022-12-13 11:48:08,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:48:08,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:48:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2022-12-13 11:48:08,079 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.66 [2022-12-13 11:48:08,079 INFO L175 Difference]: Start difference. First operand has 74 places, 109 transitions, 969 flow. Second operand 4 states and 132 transitions. [2022-12-13 11:48:08,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 159 transitions, 1527 flow [2022-12-13 11:48:08,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 159 transitions, 1468 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 11:48:08,158 INFO L231 Difference]: Finished difference. Result has 76 places, 120 transitions, 1112 flow [2022-12-13 11:48:08,158 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1112, PETRI_PLACES=76, PETRI_TRANSITIONS=120} [2022-12-13 11:48:08,159 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -15 predicate places. [2022-12-13 11:48:08,159 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:48:08,159 INFO L89 Accepts]: Start accepts. Operand has 76 places, 120 transitions, 1112 flow [2022-12-13 11:48:08,160 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:48:08,160 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:48:08,160 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 120 transitions, 1112 flow [2022-12-13 11:48:08,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 120 transitions, 1112 flow [2022-12-13 11:48:08,374 INFO L130 PetriNetUnfolder]: 1155/2256 cut-off events. [2022-12-13 11:48:08,374 INFO L131 PetriNetUnfolder]: For 5932/6390 co-relation queries the response was YES. [2022-12-13 11:48:08,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9758 conditions, 2256 events. 1155/2256 cut-off events. For 5932/6390 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 16120 event pairs, 318 based on Foata normal form. 5/1837 useless extension candidates. Maximal degree in co-relation 9734. Up to 1159 conditions per place. [2022-12-13 11:48:08,402 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 120 transitions, 1112 flow [2022-12-13 11:48:08,402 INFO L226 LiptonReduction]: Number of co-enabled transitions 2418 [2022-12-13 11:48:08,413 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:48:08,414 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 255 [2022-12-13 11:48:08,414 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 120 transitions, 1112 flow [2022-12-13 11:48:08,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:08,414 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:48:08,414 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:08,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:48:08,415 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:48:08,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:08,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1693139716, now seen corresponding path program 2 times [2022-12-13 11:48:08,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:08,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345576386] [2022-12-13 11:48:08,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:08,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:08,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:08,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:08,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:08,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345576386] [2022-12-13 11:48:08,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345576386] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:08,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:08,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:48:08,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320695081] [2022-12-13 11:48:08,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:08,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:48:08,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:08,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:48:08,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:48:08,940 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2022-12-13 11:48:08,940 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 120 transitions, 1112 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:08,940 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:48:08,940 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2022-12-13 11:48:08,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:48:11,420 INFO L130 PetriNetUnfolder]: 19263/27490 cut-off events. [2022-12-13 11:48:11,420 INFO L131 PetriNetUnfolder]: For 108042/109393 co-relation queries the response was YES. [2022-12-13 11:48:11,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113705 conditions, 27490 events. 19263/27490 cut-off events. For 108042/109393 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 168479 event pairs, 5930 based on Foata normal form. 46/22895 useless extension candidates. Maximal degree in co-relation 113678. Up to 18898 conditions per place. [2022-12-13 11:48:11,635 INFO L137 encePairwiseOnDemand]: 39/50 looper letters, 94 selfloop transitions, 41 changer transitions 0/160 dead transitions. [2022-12-13 11:48:11,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 160 transitions, 1602 flow [2022-12-13 11:48:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:48:11,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:48:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2022-12-13 11:48:11,636 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.66 [2022-12-13 11:48:11,636 INFO L175 Difference]: Start difference. First operand has 76 places, 120 transitions, 1112 flow. Second operand 4 states and 132 transitions. [2022-12-13 11:48:11,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 160 transitions, 1602 flow [2022-12-13 11:48:11,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 160 transitions, 1579 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 11:48:11,694 INFO L231 Difference]: Finished difference. Result has 79 places, 124 transitions, 1256 flow [2022-12-13 11:48:11,694 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1256, PETRI_PLACES=79, PETRI_TRANSITIONS=124} [2022-12-13 11:48:11,695 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -12 predicate places. [2022-12-13 11:48:11,695 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:48:11,695 INFO L89 Accepts]: Start accepts. Operand has 79 places, 124 transitions, 1256 flow [2022-12-13 11:48:11,696 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:48:11,696 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:48:11,696 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 124 transitions, 1256 flow [2022-12-13 11:48:11,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 124 transitions, 1256 flow [2022-12-13 11:48:11,970 INFO L130 PetriNetUnfolder]: 1160/2266 cut-off events. [2022-12-13 11:48:11,971 INFO L131 PetriNetUnfolder]: For 8026/8491 co-relation queries the response was YES. [2022-12-13 11:48:11,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10285 conditions, 2266 events. 1160/2266 cut-off events. For 8026/8491 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 16230 event pairs, 319 based on Foata normal form. 5/1847 useless extension candidates. Maximal degree in co-relation 10259. Up to 1152 conditions per place. [2022-12-13 11:48:11,999 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 124 transitions, 1256 flow [2022-12-13 11:48:11,999 INFO L226 LiptonReduction]: Number of co-enabled transitions 2506 [2022-12-13 11:48:12,008 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:48:12,009 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 314 [2022-12-13 11:48:12,009 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 124 transitions, 1256 flow [2022-12-13 11:48:12,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:12,009 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:48:12,009 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:12,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:48:12,010 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:48:12,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:12,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1699656257, now seen corresponding path program 1 times [2022-12-13 11:48:12,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:12,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903385269] [2022-12-13 11:48:12,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:12,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:12,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:12,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903385269] [2022-12-13 11:48:12,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903385269] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:12,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:12,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:48:12,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480261187] [2022-12-13 11:48:12,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:12,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:48:12,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:12,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:48:12,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:48:12,283 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2022-12-13 11:48:12,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 124 transitions, 1256 flow. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:12,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:48:12,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2022-12-13 11:48:12,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:48:14,821 INFO L130 PetriNetUnfolder]: 20054/28516 cut-off events. [2022-12-13 11:48:14,822 INFO L131 PetriNetUnfolder]: For 140881/142522 co-relation queries the response was YES. [2022-12-13 11:48:14,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122598 conditions, 28516 events. 20054/28516 cut-off events. For 140881/142522 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 174389 event pairs, 6836 based on Foata normal form. 78/23963 useless extension candidates. Maximal degree in co-relation 122569. Up to 19432 conditions per place. [2022-12-13 11:48:15,020 INFO L137 encePairwiseOnDemand]: 41/50 looper letters, 117 selfloop transitions, 28 changer transitions 0/170 dead transitions. [2022-12-13 11:48:15,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 170 transitions, 1837 flow [2022-12-13 11:48:15,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:48:15,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:48:15,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2022-12-13 11:48:15,022 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.64 [2022-12-13 11:48:15,022 INFO L175 Difference]: Start difference. First operand has 79 places, 124 transitions, 1256 flow. Second operand 4 states and 128 transitions. [2022-12-13 11:48:15,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 170 transitions, 1837 flow [2022-12-13 11:48:15,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 170 transitions, 1814 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 11:48:15,084 INFO L231 Difference]: Finished difference. Result has 82 places, 137 transitions, 1449 flow [2022-12-13 11:48:15,084 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1449, PETRI_PLACES=82, PETRI_TRANSITIONS=137} [2022-12-13 11:48:15,085 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -9 predicate places. [2022-12-13 11:48:15,085 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:48:15,085 INFO L89 Accepts]: Start accepts. Operand has 82 places, 137 transitions, 1449 flow [2022-12-13 11:48:15,086 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:48:15,086 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:48:15,086 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 137 transitions, 1449 flow [2022-12-13 11:48:15,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 137 transitions, 1449 flow [2022-12-13 11:48:15,437 INFO L130 PetriNetUnfolder]: 1453/2649 cut-off events. [2022-12-13 11:48:15,437 INFO L131 PetriNetUnfolder]: For 11772/12422 co-relation queries the response was YES. [2022-12-13 11:48:15,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13293 conditions, 2649 events. 1453/2649 cut-off events. For 11772/12422 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 18113 event pairs, 342 based on Foata normal form. 8/2231 useless extension candidates. Maximal degree in co-relation 13265. Up to 1507 conditions per place. [2022-12-13 11:48:15,470 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 137 transitions, 1449 flow [2022-12-13 11:48:15,470 INFO L226 LiptonReduction]: Number of co-enabled transitions 2740 [2022-12-13 11:48:15,482 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:48:15,483 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 398 [2022-12-13 11:48:15,483 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 137 transitions, 1449 flow [2022-12-13 11:48:15,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:15,483 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:48:15,483 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:15,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:48:15,484 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:48:15,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:15,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1692965837, now seen corresponding path program 2 times [2022-12-13 11:48:15,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:15,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238784736] [2022-12-13 11:48:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:15,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:16,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:16,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238784736] [2022-12-13 11:48:16,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238784736] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:16,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:16,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:48:16,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142516623] [2022-12-13 11:48:16,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:16,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:48:16,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:16,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:48:16,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:48:16,127 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2022-12-13 11:48:16,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 137 transitions, 1449 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:16,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:48:16,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2022-12-13 11:48:16,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:48:19,439 INFO L130 PetriNetUnfolder]: 23137/31902 cut-off events. [2022-12-13 11:48:19,439 INFO L131 PetriNetUnfolder]: For 149196/149196 co-relation queries the response was YES. [2022-12-13 11:48:19,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143675 conditions, 31902 events. 23137/31902 cut-off events. For 149196/149196 co-relation queries the response was YES. Maximal size of possible extension queue 1156. Compared 181382 event pairs, 7739 based on Foata normal form. 60/27231 useless extension candidates. Maximal degree in co-relation 143644. Up to 24175 conditions per place. [2022-12-13 11:48:19,705 INFO L137 encePairwiseOnDemand]: 32/50 looper letters, 161 selfloop transitions, 71 changer transitions 0/243 dead transitions. [2022-12-13 11:48:19,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 243 transitions, 2677 flow [2022-12-13 11:48:19,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:48:19,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:48:19,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2022-12-13 11:48:19,707 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.64 [2022-12-13 11:48:19,707 INFO L175 Difference]: Start difference. First operand has 82 places, 137 transitions, 1449 flow. Second operand 6 states and 192 transitions. [2022-12-13 11:48:19,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 243 transitions, 2677 flow [2022-12-13 11:48:19,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 243 transitions, 2610 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-12-13 11:48:19,980 INFO L231 Difference]: Finished difference. Result has 89 places, 172 transitions, 2104 flow [2022-12-13 11:48:19,980 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2104, PETRI_PLACES=89, PETRI_TRANSITIONS=172} [2022-12-13 11:48:19,980 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, -2 predicate places. [2022-12-13 11:48:19,981 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:48:19,981 INFO L89 Accepts]: Start accepts. Operand has 89 places, 172 transitions, 2104 flow [2022-12-13 11:48:19,982 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:48:19,982 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:48:19,982 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 172 transitions, 2104 flow [2022-12-13 11:48:19,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 172 transitions, 2104 flow [2022-12-13 11:48:20,298 INFO L130 PetriNetUnfolder]: 1529/2721 cut-off events. [2022-12-13 11:48:20,299 INFO L131 PetriNetUnfolder]: For 15264/16129 co-relation queries the response was YES. [2022-12-13 11:48:20,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15405 conditions, 2721 events. 1529/2721 cut-off events. For 15264/16129 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 18162 event pairs, 283 based on Foata normal form. 37/2360 useless extension candidates. Maximal degree in co-relation 15373. Up to 1615 conditions per place. [2022-12-13 11:48:20,326 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 172 transitions, 2104 flow [2022-12-13 11:48:20,326 INFO L226 LiptonReduction]: Number of co-enabled transitions 3138 [2022-12-13 11:48:22,083 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:48:22,084 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2103 [2022-12-13 11:48:22,084 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 172 transitions, 2138 flow [2022-12-13 11:48:22,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:22,085 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:48:22,085 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:22,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:48:22,085 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:48:22,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:22,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1693209931, now seen corresponding path program 1 times [2022-12-13 11:48:22,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:22,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073630000] [2022-12-13 11:48:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:22,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:22,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:22,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073630000] [2022-12-13 11:48:22,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073630000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:22,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:22,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:48:22,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997446230] [2022-12-13 11:48:22,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:22,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:48:22,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:48:22,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:48:22,530 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2022-12-13 11:48:22,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 172 transitions, 2138 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:22,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:48:22,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2022-12-13 11:48:22,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:48:25,612 INFO L130 PetriNetUnfolder]: 20884/29479 cut-off events. [2022-12-13 11:48:25,612 INFO L131 PetriNetUnfolder]: For 205063/206535 co-relation queries the response was YES. [2022-12-13 11:48:25,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146214 conditions, 29479 events. 20884/29479 cut-off events. For 205063/206535 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 177639 event pairs, 7841 based on Foata normal form. 132/24930 useless extension candidates. Maximal degree in co-relation 146179. Up to 19822 conditions per place. [2022-12-13 11:48:25,853 INFO L137 encePairwiseOnDemand]: 39/52 looper letters, 125 selfloop transitions, 66 changer transitions 0/225 dead transitions. [2022-12-13 11:48:25,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 225 transitions, 2859 flow [2022-12-13 11:48:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:48:25,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:48:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 157 transitions. [2022-12-13 11:48:25,855 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6038461538461538 [2022-12-13 11:48:25,855 INFO L175 Difference]: Start difference. First operand has 89 places, 172 transitions, 2138 flow. Second operand 5 states and 157 transitions. [2022-12-13 11:48:25,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 225 transitions, 2859 flow [2022-12-13 11:48:26,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 225 transitions, 2763 flow, removed 27 selfloop flow, removed 1 redundant places. [2022-12-13 11:48:26,109 INFO L231 Difference]: Finished difference. Result has 94 places, 180 transitions, 2328 flow [2022-12-13 11:48:26,110 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2328, PETRI_PLACES=94, PETRI_TRANSITIONS=180} [2022-12-13 11:48:26,110 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2022-12-13 11:48:26,110 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:48:26,110 INFO L89 Accepts]: Start accepts. Operand has 94 places, 180 transitions, 2328 flow [2022-12-13 11:48:26,111 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:48:26,111 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:48:26,112 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 180 transitions, 2328 flow [2022-12-13 11:48:26,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 180 transitions, 2328 flow [2022-12-13 11:48:26,492 INFO L130 PetriNetUnfolder]: 1618/2800 cut-off events. [2022-12-13 11:48:26,493 INFO L131 PetriNetUnfolder]: For 20850/21584 co-relation queries the response was YES. [2022-12-13 11:48:26,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17069 conditions, 2800 events. 1618/2800 cut-off events. For 20850/21584 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 18184 event pairs, 317 based on Foata normal form. 34/2454 useless extension candidates. Maximal degree in co-relation 17034. Up to 1681 conditions per place. [2022-12-13 11:48:26,522 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 180 transitions, 2328 flow [2022-12-13 11:48:26,522 INFO L226 LiptonReduction]: Number of co-enabled transitions 3278 [2022-12-13 11:48:27,315 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:48:27,316 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1206 [2022-12-13 11:48:27,316 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 180 transitions, 2346 flow [2022-12-13 11:48:27,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:27,317 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:48:27,317 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:27,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:48:27,317 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:48:27,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1693113769, now seen corresponding path program 1 times [2022-12-13 11:48:27,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:27,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624195171] [2022-12-13 11:48:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:27,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:28,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:28,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624195171] [2022-12-13 11:48:28,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624195171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:28,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:28,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:48:28,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019782180] [2022-12-13 11:48:28,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:28,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:48:28,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:28,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:48:28,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:48:28,051 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2022-12-13 11:48:28,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 180 transitions, 2346 flow. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:28,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:48:28,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2022-12-13 11:48:28,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:48:31,435 INFO L130 PetriNetUnfolder]: 23691/32657 cut-off events. [2022-12-13 11:48:31,436 INFO L131 PetriNetUnfolder]: For 228397/228397 co-relation queries the response was YES. [2022-12-13 11:48:31,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165976 conditions, 32657 events. 23691/32657 cut-off events. For 228397/228397 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 186186 event pairs, 7673 based on Foata normal form. 45/27925 useless extension candidates. Maximal degree in co-relation 165938. Up to 24669 conditions per place. [2022-12-13 11:48:31,732 INFO L137 encePairwiseOnDemand]: 34/51 looper letters, 161 selfloop transitions, 100 changer transitions 0/272 dead transitions. [2022-12-13 11:48:31,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 272 transitions, 3537 flow [2022-12-13 11:48:31,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:48:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:48:31,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2022-12-13 11:48:31,734 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2022-12-13 11:48:31,734 INFO L175 Difference]: Start difference. First operand has 94 places, 180 transitions, 2346 flow. Second operand 7 states and 204 transitions. [2022-12-13 11:48:31,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 272 transitions, 3537 flow [2022-12-13 11:48:32,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 272 transitions, 3400 flow, removed 29 selfloop flow, removed 2 redundant places. [2022-12-13 11:48:32,168 INFO L231 Difference]: Finished difference. Result has 101 places, 202 transitions, 2817 flow [2022-12-13 11:48:32,168 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2211, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2817, PETRI_PLACES=101, PETRI_TRANSITIONS=202} [2022-12-13 11:48:32,168 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 10 predicate places. [2022-12-13 11:48:32,168 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:48:32,169 INFO L89 Accepts]: Start accepts. Operand has 101 places, 202 transitions, 2817 flow [2022-12-13 11:48:32,169 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:48:32,170 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:48:32,170 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 202 transitions, 2817 flow [2022-12-13 11:48:32,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 202 transitions, 2817 flow [2022-12-13 11:48:32,427 INFO L130 PetriNetUnfolder]: 1657/2872 cut-off events. [2022-12-13 11:48:32,427 INFO L131 PetriNetUnfolder]: For 21965/22915 co-relation queries the response was YES. [2022-12-13 11:48:32,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18140 conditions, 2872 events. 1657/2872 cut-off events. For 21965/22915 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 18739 event pairs, 322 based on Foata normal form. 68/2554 useless extension candidates. Maximal degree in co-relation 18102. Up to 1746 conditions per place. [2022-12-13 11:48:32,466 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 202 transitions, 2817 flow [2022-12-13 11:48:32,467 INFO L226 LiptonReduction]: Number of co-enabled transitions 3508 [2022-12-13 11:48:33,457 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:48:33,458 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1290 [2022-12-13 11:48:33,458 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 202 transitions, 2835 flow [2022-12-13 11:48:33,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:33,458 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:48:33,458 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:33,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:48:33,459 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:48:33,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:33,459 INFO L85 PathProgramCache]: Analyzing trace with hash -944357382, now seen corresponding path program 1 times [2022-12-13 11:48:33,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:33,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207250160] [2022-12-13 11:48:33,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:33,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:34,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:34,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207250160] [2022-12-13 11:48:34,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207250160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:34,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:34,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:48:34,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024226464] [2022-12-13 11:48:34,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:34,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:48:34,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:34,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:48:34,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:48:34,277 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 51 [2022-12-13 11:48:34,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 202 transitions, 2835 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:34,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:48:34,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 51 [2022-12-13 11:48:34,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:48:38,370 INFO L130 PetriNetUnfolder]: 25954/35941 cut-off events. [2022-12-13 11:48:38,371 INFO L131 PetriNetUnfolder]: For 282596/282596 co-relation queries the response was YES. [2022-12-13 11:48:38,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183448 conditions, 35941 events. 25954/35941 cut-off events. For 282596/282596 co-relation queries the response was YES. Maximal size of possible extension queue 1356. Compared 213215 event pairs, 5076 based on Foata normal form. 330/31022 useless extension candidates. Maximal degree in co-relation 183407. Up to 19933 conditions per place. [2022-12-13 11:48:38,687 INFO L137 encePairwiseOnDemand]: 35/51 looper letters, 182 selfloop transitions, 98 changer transitions 0/291 dead transitions. [2022-12-13 11:48:38,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 291 transitions, 4024 flow [2022-12-13 11:48:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:48:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:48:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2022-12-13 11:48:38,689 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2022-12-13 11:48:38,689 INFO L175 Difference]: Start difference. First operand has 101 places, 202 transitions, 2835 flow. Second operand 6 states and 187 transitions. [2022-12-13 11:48:38,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 291 transitions, 4024 flow [2022-12-13 11:48:39,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 291 transitions, 3898 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-12-13 11:48:39,102 INFO L231 Difference]: Finished difference. Result has 106 places, 205 transitions, 3059 flow [2022-12-13 11:48:39,102 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=2684, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3059, PETRI_PLACES=106, PETRI_TRANSITIONS=205} [2022-12-13 11:48:39,103 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 15 predicate places. [2022-12-13 11:48:39,103 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:48:39,103 INFO L89 Accepts]: Start accepts. Operand has 106 places, 205 transitions, 3059 flow [2022-12-13 11:48:39,104 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:48:39,104 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:48:39,104 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 205 transitions, 3059 flow [2022-12-13 11:48:39,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 205 transitions, 3059 flow [2022-12-13 11:48:39,379 INFO L130 PetriNetUnfolder]: 1774/3050 cut-off events. [2022-12-13 11:48:39,379 INFO L131 PetriNetUnfolder]: For 30996/32308 co-relation queries the response was YES. [2022-12-13 11:48:39,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20578 conditions, 3050 events. 1774/3050 cut-off events. For 30996/32308 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 20038 event pairs, 328 based on Foata normal form. 123/2799 useless extension candidates. Maximal degree in co-relation 20537. Up to 1887 conditions per place. [2022-12-13 11:48:39,423 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 205 transitions, 3059 flow [2022-12-13 11:48:39,423 INFO L226 LiptonReduction]: Number of co-enabled transitions 3612 [2022-12-13 11:48:39,437 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:48:39,438 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 335 [2022-12-13 11:48:39,438 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 205 transitions, 3059 flow [2022-12-13 11:48:39,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:39,438 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:48:39,438 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:39,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 11:48:39,439 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:48:39,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:39,439 INFO L85 PathProgramCache]: Analyzing trace with hash -947818005, now seen corresponding path program 1 times [2022-12-13 11:48:39,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:39,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025807904] [2022-12-13 11:48:39,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:39,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:39,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:39,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:39,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025807904] [2022-12-13 11:48:39,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025807904] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:39,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:39,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:48:39,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211522895] [2022-12-13 11:48:39,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:39,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:48:39,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:39,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:48:39,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:48:39,964 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 50 [2022-12-13 11:48:39,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 205 transitions, 3059 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:39,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:48:39,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 50 [2022-12-13 11:48:39,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:48:44,126 INFO L130 PetriNetUnfolder]: 24299/34825 cut-off events. [2022-12-13 11:48:44,126 INFO L131 PetriNetUnfolder]: For 390795/392780 co-relation queries the response was YES. [2022-12-13 11:48:44,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192410 conditions, 34825 events. 24299/34825 cut-off events. For 390795/392780 co-relation queries the response was YES. Maximal size of possible extension queue 1490. Compared 224344 event pairs, 7547 based on Foata normal form. 425/29810 useless extension candidates. Maximal degree in co-relation 192366. Up to 22462 conditions per place. [2022-12-13 11:48:44,523 INFO L137 encePairwiseOnDemand]: 43/50 looper letters, 173 selfloop transitions, 31 changer transitions 0/243 dead transitions. [2022-12-13 11:48:44,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 243 transitions, 3736 flow [2022-12-13 11:48:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:48:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:48:44,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2022-12-13 11:48:44,526 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.645 [2022-12-13 11:48:44,526 INFO L175 Difference]: Start difference. First operand has 106 places, 205 transitions, 3059 flow. Second operand 4 states and 129 transitions. [2022-12-13 11:48:44,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 243 transitions, 3736 flow [2022-12-13 11:48:45,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 243 transitions, 3529 flow, removed 25 selfloop flow, removed 5 redundant places. [2022-12-13 11:48:45,425 INFO L231 Difference]: Finished difference. Result has 105 places, 208 transitions, 3005 flow [2022-12-13 11:48:45,426 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2864, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3005, PETRI_PLACES=105, PETRI_TRANSITIONS=208} [2022-12-13 11:48:45,426 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 14 predicate places. [2022-12-13 11:48:45,426 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:48:45,426 INFO L89 Accepts]: Start accepts. Operand has 105 places, 208 transitions, 3005 flow [2022-12-13 11:48:45,428 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:48:45,428 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:48:45,428 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 208 transitions, 3005 flow [2022-12-13 11:48:45,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 208 transitions, 3005 flow [2022-12-13 11:48:45,864 INFO L130 PetriNetUnfolder]: 1864/3332 cut-off events. [2022-12-13 11:48:45,864 INFO L131 PetriNetUnfolder]: For 30839/32280 co-relation queries the response was YES. [2022-12-13 11:48:45,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20719 conditions, 3332 events. 1864/3332 cut-off events. For 30839/32280 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 23511 event pairs, 352 based on Foata normal form. 127/2996 useless extension candidates. Maximal degree in co-relation 20679. Up to 1988 conditions per place. [2022-12-13 11:48:45,911 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 208 transitions, 3005 flow [2022-12-13 11:48:45,911 INFO L226 LiptonReduction]: Number of co-enabled transitions 3702 [2022-12-13 11:48:45,926 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:48:45,927 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 501 [2022-12-13 11:48:45,927 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 208 transitions, 3005 flow [2022-12-13 11:48:45,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:45,927 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:48:45,928 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:45,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:48:45,928 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:48:45,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:45,928 INFO L85 PathProgramCache]: Analyzing trace with hash -947644157, now seen corresponding path program 1 times [2022-12-13 11:48:45,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:45,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204743528] [2022-12-13 11:48:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:45,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:46,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:46,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204743528] [2022-12-13 11:48:46,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204743528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:46,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:46,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:48:46,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608902137] [2022-12-13 11:48:46,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:46,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:48:46,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:46,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:48:46,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:48:46,555 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2022-12-13 11:48:46,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 208 transitions, 3005 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:46,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:48:46,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2022-12-13 11:48:46,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:48:51,751 INFO L130 PetriNetUnfolder]: 33177/46145 cut-off events. [2022-12-13 11:48:51,751 INFO L131 PetriNetUnfolder]: For 408988/408988 co-relation queries the response was YES. [2022-12-13 11:48:51,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239109 conditions, 46145 events. 33177/46145 cut-off events. For 408988/408988 co-relation queries the response was YES. Maximal size of possible extension queue 1805. Compared 287479 event pairs, 6575 based on Foata normal form. 360/39560 useless extension candidates. Maximal degree in co-relation 239066. Up to 26180 conditions per place. [2022-12-13 11:48:52,297 INFO L137 encePairwiseOnDemand]: 30/50 looper letters, 191 selfloop transitions, 115 changer transitions 0/317 dead transitions. [2022-12-13 11:48:52,297 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 317 transitions, 4588 flow [2022-12-13 11:48:52,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:48:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:48:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2022-12-13 11:48:52,299 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2022-12-13 11:48:52,299 INFO L175 Difference]: Start difference. First operand has 105 places, 208 transitions, 3005 flow. Second operand 7 states and 215 transitions. [2022-12-13 11:48:52,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 317 transitions, 4588 flow [2022-12-13 11:48:53,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 317 transitions, 4492 flow, removed 21 selfloop flow, removed 2 redundant places. [2022-12-13 11:48:53,222 INFO L231 Difference]: Finished difference. Result has 111 places, 240 transitions, 3829 flow [2022-12-13 11:48:53,222 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=2946, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3829, PETRI_PLACES=111, PETRI_TRANSITIONS=240} [2022-12-13 11:48:53,223 INFO L295 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2022-12-13 11:48:53,223 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:48:53,223 INFO L89 Accepts]: Start accepts. Operand has 111 places, 240 transitions, 3829 flow [2022-12-13 11:48:53,224 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:48:53,224 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:48:53,224 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 240 transitions, 3829 flow [2022-12-13 11:48:53,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 240 transitions, 3829 flow [2022-12-13 11:48:53,717 INFO L130 PetriNetUnfolder]: 2227/4027 cut-off events. [2022-12-13 11:48:53,717 INFO L131 PetriNetUnfolder]: For 43419/45385 co-relation queries the response was YES. [2022-12-13 11:48:53,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27639 conditions, 4027 events. 2227/4027 cut-off events. For 43419/45385 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 29925 event pairs, 297 based on Foata normal form. 179/3654 useless extension candidates. Maximal degree in co-relation 27597. Up to 2466 conditions per place. [2022-12-13 11:48:53,768 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 240 transitions, 3829 flow [2022-12-13 11:48:53,768 INFO L226 LiptonReduction]: Number of co-enabled transitions 4286 [2022-12-13 11:48:53,780 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:48:53,781 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 558 [2022-12-13 11:48:53,781 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 240 transitions, 3829 flow [2022-12-13 11:48:53,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:53,781 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:48:53,781 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:48:53,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 11:48:53,782 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:48:53,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:48:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash -949904429, now seen corresponding path program 1 times [2022-12-13 11:48:53,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:48:53,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234678842] [2022-12-13 11:48:53,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:48:53,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:48:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:48:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:48:54,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:48:54,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234678842] [2022-12-13 11:48:54,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234678842] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:48:54,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:48:54,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:48:54,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48060445] [2022-12-13 11:48:54,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:48:54,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:48:54,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:48:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:48:54,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:48:54,500 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2022-12-13 11:48:54,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 240 transitions, 3829 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:48:54,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:48:54,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2022-12-13 11:48:54,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand