/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix044.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 00:43:13,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 00:43:13,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 00:43:14,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 00:43:14,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 00:43:14,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 00:43:14,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 00:43:14,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 00:43:14,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 00:43:14,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 00:43:14,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 00:43:14,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 00:43:14,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 00:43:14,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 00:43:14,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 00:43:14,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 00:43:14,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 00:43:14,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 00:43:14,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 00:43:14,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 00:43:14,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 00:43:14,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 00:43:14,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 00:43:14,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 00:43:14,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 00:43:14,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 00:43:14,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 00:43:14,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 00:43:14,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 00:43:14,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 00:43:14,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 00:43:14,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 00:43:14,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 00:43:14,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 00:43:14,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 00:43:14,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 00:43:14,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 00:43:14,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 00:43:14,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 00:43:14,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 00:43:14,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 00:43:14,093 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-RepeatedSemanticLbe.epf [2022-12-13 00:43:14,119 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 00:43:14,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 00:43:14,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 00:43:14,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 00:43:14,121 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 00:43:14,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 00:43:14,121 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 00:43:14,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 00:43:14,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 00:43:14,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 00:43:14,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 00:43:14,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 00:43:14,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 00:43:14,123 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 00:43:14,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 00:43:14,123 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 00:43:14,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 00:43:14,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 00:43:14,123 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 00:43:14,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 00:43:14,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 00:43:14,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 00:43:14,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 00:43:14,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 00:43:14,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 00:43:14,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 00:43:14,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 00:43:14,124 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 00:43:14,124 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 00:43:14,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 00:43:14,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 00:43:14,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 00:43:14,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 00:43:14,489 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 00:43:14,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix044.opt.i [2022-12-13 00:43:15,490 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 00:43:15,740 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 00:43:15,741 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix044.opt.i [2022-12-13 00:43:15,771 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f01fba7e/5a9fab149dbd43baaf1fa827ff166de7/FLAG4df829089 [2022-12-13 00:43:15,785 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f01fba7e/5a9fab149dbd43baaf1fa827ff166de7 [2022-12-13 00:43:15,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 00:43:15,787 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 00:43:15,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 00:43:15,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 00:43:15,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 00:43:15,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:43:15" (1/1) ... [2022-12-13 00:43:15,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@380fdff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:15, skipping insertion in model container [2022-12-13 00:43:15,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:43:15" (1/1) ... [2022-12-13 00:43:15,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 00:43:15,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 00:43:15,990 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/mix044.opt.i[944,957] [2022-12-13 00:43:16,154 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,154 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,154 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,157 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,167 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,167 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,173 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,174 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,175 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,175 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,175 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,181 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,182 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,182 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,207 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,222 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 00:43:16,236 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 00:43:16,248 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/mix044.opt.i[944,957] [2022-12-13 00:43:16,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,290 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,291 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,292 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,293 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,294 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,295 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,296 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,296 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,297 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,298 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,299 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,300 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,305 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,305 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,305 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,316 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,316 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:43:16,320 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:43:16,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 00:43:16,356 INFO L208 MainTranslator]: Completed translation [2022-12-13 00:43:16,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16 WrapperNode [2022-12-13 00:43:16,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 00:43:16,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 00:43:16,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 00:43:16,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 00:43:16,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16" (1/1) ... [2022-12-13 00:43:16,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16" (1/1) ... [2022-12-13 00:43:16,426 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 166 [2022-12-13 00:43:16,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 00:43:16,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 00:43:16,427 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 00:43:16,427 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 00:43:16,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16" (1/1) ... [2022-12-13 00:43:16,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16" (1/1) ... [2022-12-13 00:43:16,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16" (1/1) ... [2022-12-13 00:43:16,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16" (1/1) ... [2022-12-13 00:43:16,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16" (1/1) ... [2022-12-13 00:43:16,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16" (1/1) ... [2022-12-13 00:43:16,458 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16" (1/1) ... [2022-12-13 00:43:16,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16" (1/1) ... [2022-12-13 00:43:16,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 00:43:16,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 00:43:16,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 00:43:16,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 00:43:16,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16" (1/1) ... [2022-12-13 00:43:16,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 00:43:16,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 00:43:16,537 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 00:43:16,591 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 00:43:16,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 00:43:16,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 00:43:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 00:43:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 00:43:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 00:43:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 00:43:16,623 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 00:43:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 00:43:16,623 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 00:43:16,623 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 00:43:16,624 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 00:43:16,624 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 00:43:16,625 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 00:43:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 00:43:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 00:43:16,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 00:43:16,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 00:43:16,626 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 00:43:16,777 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 00:43:16,778 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 00:43:17,113 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 00:43:17,207 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 00:43:17,207 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 00:43:17,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:43:17 BoogieIcfgContainer [2022-12-13 00:43:17,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 00:43:17,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 00:43:17,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 00:43:17,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 00:43:17,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:43:15" (1/3) ... [2022-12-13 00:43:17,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59790f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:43:17, skipping insertion in model container [2022-12-13 00:43:17,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:43:16" (2/3) ... [2022-12-13 00:43:17,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59790f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:43:17, skipping insertion in model container [2022-12-13 00:43:17,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:43:17" (3/3) ... [2022-12-13 00:43:17,216 INFO L112 eAbstractionObserver]: Analyzing ICFG mix044.opt.i [2022-12-13 00:43:17,229 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 00:43:17,229 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 00:43:17,229 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 00:43:17,273 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 00:43:17,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 130 transitions, 280 flow [2022-12-13 00:43:17,355 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-13 00:43:17,355 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:43:17,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 2/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 00:43:17,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 130 transitions, 280 flow [2022-12-13 00:43:17,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 126 transitions, 264 flow [2022-12-13 00:43:17,364 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:43:17,375 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 126 transitions, 264 flow [2022-12-13 00:43:17,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 126 transitions, 264 flow [2022-12-13 00:43:17,397 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-13 00:43:17,397 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:43:17,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 126 events. 2/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 00:43:17,400 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 126 transitions, 264 flow [2022-12-13 00:43:17,400 INFO L226 LiptonReduction]: Number of co-enabled transitions 2936 [2022-12-13 00:43:26,720 INFO L241 LiptonReduction]: Total number of compositions: 102 [2022-12-13 00:43:26,730 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 00:43:26,734 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;@4f1c1f2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 00:43:26,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 00:43:26,739 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2022-12-13 00:43:26,739 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:43:26,739 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:43:26,739 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:43:26,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:43:26,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:43:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash -564451010, now seen corresponding path program 1 times [2022-12-13 00:43:26,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:43:26,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089152381] [2022-12-13 00:43:26,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:43:26,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:43:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:43:27,108 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 00:43:27,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:43:27,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089152381] [2022-12-13 00:43:27,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089152381] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:43:27,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:43:27,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 00:43:27,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036410615] [2022-12-13 00:43:27,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:43:27,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:43:27,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:43:27,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:43:27,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:43:27,132 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 66 [2022-12-13 00:43:27,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:43:27,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:43:27,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 66 [2022-12-13 00:43:27,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:43:33,359 INFO L130 PetriNetUnfolder]: 49367/69927 cut-off events. [2022-12-13 00:43:33,359 INFO L131 PetriNetUnfolder]: For 76/76 co-relation queries the response was YES. [2022-12-13 00:43:33,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135383 conditions, 69927 events. 49367/69927 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 4112. Compared 535437 event pairs, 5495 based on Foata normal form. 0/40880 useless extension candidates. Maximal degree in co-relation 135371. Up to 57313 conditions per place. [2022-12-13 00:43:33,596 INFO L137 encePairwiseOnDemand]: 61/66 looper letters, 37 selfloop transitions, 3 changer transitions 48/101 dead transitions. [2022-12-13 00:43:33,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 101 transitions, 390 flow [2022-12-13 00:43:33,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:43:33,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:43:33,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2022-12-13 00:43:33,604 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6565656565656566 [2022-12-13 00:43:33,605 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 144 flow. Second operand 3 states and 130 transitions. [2022-12-13 00:43:33,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 101 transitions, 390 flow [2022-12-13 00:43:33,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 101 transitions, 386 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 00:43:33,611 INFO L231 Difference]: Finished difference. Result has 75 places, 40 transitions, 94 flow [2022-12-13 00:43:33,612 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=75, PETRI_TRANSITIONS=40} [2022-12-13 00:43:33,615 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -4 predicate places. [2022-12-13 00:43:33,615 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:43:33,616 INFO L89 Accepts]: Start accepts. Operand has 75 places, 40 transitions, 94 flow [2022-12-13 00:43:33,619 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:43:33,619 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:43:33,620 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 40 transitions, 94 flow [2022-12-13 00:43:33,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 40 transitions, 94 flow [2022-12-13 00:43:33,630 INFO L130 PetriNetUnfolder]: 0/40 cut-off events. [2022-12-13 00:43:33,630 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:43:33,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 40 events. 0/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2022-12-13 00:43:33,635 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 40 transitions, 94 flow [2022-12-13 00:43:33,635 INFO L226 LiptonReduction]: Number of co-enabled transitions 954 [2022-12-13 00:43:33,904 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 00:43:33,906 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 291 [2022-12-13 00:43:33,906 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 92 flow [2022-12-13 00:43:33,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:43:33,906 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:43:33,906 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:43:33,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 00:43:33,907 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:43:33,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:43:33,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1271480904, now seen corresponding path program 1 times [2022-12-13 00:43:33,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:43:33,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959758322] [2022-12-13 00:43:33,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:43:33,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:43:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:43:34,178 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 00:43:34,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:43:34,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959758322] [2022-12-13 00:43:34,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959758322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:43:34,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:43:34,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 00:43:34,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411032544] [2022-12-13 00:43:34,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:43:34,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:43:34,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:43:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:43:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:43:34,189 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2022-12-13 00:43:34,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 00:43:34,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:43:34,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2022-12-13 00:43:34,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:43:34,831 INFO L130 PetriNetUnfolder]: 5431/8071 cut-off events. [2022-12-13 00:43:34,831 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2022-12-13 00:43:34,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16149 conditions, 8071 events. 5431/8071 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 49827 event pairs, 1847 based on Foata normal form. 160/6288 useless extension candidates. Maximal degree in co-relation 16139. Up to 5105 conditions per place. [2022-12-13 00:43:34,866 INFO L137 encePairwiseOnDemand]: 36/39 looper letters, 35 selfloop transitions, 2 changer transitions 1/51 dead transitions. [2022-12-13 00:43:34,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 192 flow [2022-12-13 00:43:34,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:43:34,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:43:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2022-12-13 00:43:34,867 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-13 00:43:34,867 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 92 flow. Second operand 3 states and 78 transitions. [2022-12-13 00:43:34,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 192 flow [2022-12-13 00:43:34,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 00:43:34,874 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 92 flow [2022-12-13 00:43:34,875 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2022-12-13 00:43:34,875 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -28 predicate places. [2022-12-13 00:43:34,875 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:43:34,875 INFO L89 Accepts]: Start accepts. Operand has 51 places, 38 transitions, 92 flow [2022-12-13 00:43:34,876 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:43:34,876 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:43:34,876 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 38 transitions, 92 flow [2022-12-13 00:43:34,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 38 transitions, 92 flow [2022-12-13 00:43:34,879 INFO L130 PetriNetUnfolder]: 0/38 cut-off events. [2022-12-13 00:43:34,880 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:43:34,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 38 events. 0/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2022-12-13 00:43:34,880 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 50 places, 38 transitions, 92 flow [2022-12-13 00:43:34,880 INFO L226 LiptonReduction]: Number of co-enabled transitions 858 [2022-12-13 00:43:34,888 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:43:34,889 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 14 [2022-12-13 00:43:34,889 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 92 flow [2022-12-13 00:43:34,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 00:43:34,889 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:43:34,889 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:43:34,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 00:43:34,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:43:34,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:43:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash -761201036, now seen corresponding path program 1 times [2022-12-13 00:43:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:43:34,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384480731] [2022-12-13 00:43:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:43:34,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:43:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:43:35,382 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 00:43:35,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:43:35,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384480731] [2022-12-13 00:43:35,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384480731] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:43:35,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:43:35,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:43:35,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266271203] [2022-12-13 00:43:35,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:43:35,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:43:35,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:43:35,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:43:35,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:43:35,384 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2022-12-13 00:43:35,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:43:35,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:43:35,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2022-12-13 00:43:35,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:43:36,803 INFO L130 PetriNetUnfolder]: 16554/23928 cut-off events. [2022-12-13 00:43:36,803 INFO L131 PetriNetUnfolder]: For 1872/1872 co-relation queries the response was YES. [2022-12-13 00:43:36,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49028 conditions, 23928 events. 16554/23928 cut-off events. For 1872/1872 co-relation queries the response was YES. Maximal size of possible extension queue 918. Compared 152356 event pairs, 919 based on Foata normal form. 510/19839 useless extension candidates. Maximal degree in co-relation 49017. Up to 15784 conditions per place. [2022-12-13 00:43:36,981 INFO L137 encePairwiseOnDemand]: 28/38 looper letters, 61 selfloop transitions, 11 changer transitions 0/81 dead transitions. [2022-12-13 00:43:36,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 81 transitions, 338 flow [2022-12-13 00:43:36,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:43:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:43:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2022-12-13 00:43:36,983 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2022-12-13 00:43:36,983 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 92 flow. Second operand 4 states and 110 transitions. [2022-12-13 00:43:36,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 81 transitions, 338 flow [2022-12-13 00:43:36,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 00:43:36,986 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 159 flow [2022-12-13 00:43:36,986 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2022-12-13 00:43:36,987 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -26 predicate places. [2022-12-13 00:43:36,987 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:43:36,987 INFO L89 Accepts]: Start accepts. Operand has 53 places, 47 transitions, 159 flow [2022-12-13 00:43:36,988 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:43:36,988 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:43:36,988 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 53 places, 47 transitions, 159 flow [2022-12-13 00:43:36,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 159 flow [2022-12-13 00:43:37,039 INFO L130 PetriNetUnfolder]: 280/778 cut-off events. [2022-12-13 00:43:37,040 INFO L131 PetriNetUnfolder]: For 140/140 co-relation queries the response was YES. [2022-12-13 00:43:37,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1485 conditions, 778 events. 280/778 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5645 event pairs, 142 based on Foata normal form. 0/552 useless extension candidates. Maximal degree in co-relation 1475. Up to 383 conditions per place. [2022-12-13 00:43:37,048 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 53 places, 47 transitions, 159 flow [2022-12-13 00:43:37,048 INFO L226 LiptonReduction]: Number of co-enabled transitions 1110 [2022-12-13 00:43:37,060 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:43:37,061 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 74 [2022-12-13 00:43:37,061 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 159 flow [2022-12-13 00:43:37,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 00:43:37,061 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:43:37,062 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:43:37,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 00:43:37,062 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:43:37,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:43:37,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2120406995, now seen corresponding path program 1 times [2022-12-13 00:43:37,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:43:37,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312775059] [2022-12-13 00:43:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:43:37,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:43:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:43:37,965 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 00:43:37,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:43:37,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312775059] [2022-12-13 00:43:37,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312775059] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:43:37,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:43:37,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:43:37,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766688718] [2022-12-13 00:43:37,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:43:37,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 00:43:37,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:43:37,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 00:43:37,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 00:43:37,967 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2022-12-13 00:43:37,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 00:43:37,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:43:37,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2022-12-13 00:43:37,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:43:39,577 INFO L130 PetriNetUnfolder]: 16909/24459 cut-off events. [2022-12-13 00:43:39,577 INFO L131 PetriNetUnfolder]: For 9007/9007 co-relation queries the response was YES. [2022-12-13 00:43:39,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61952 conditions, 24459 events. 16909/24459 cut-off events. For 9007/9007 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 149232 event pairs, 2762 based on Foata normal form. 138/19960 useless extension candidates. Maximal degree in co-relation 61939. Up to 14176 conditions per place. [2022-12-13 00:43:39,732 INFO L137 encePairwiseOnDemand]: 27/38 looper letters, 66 selfloop transitions, 21 changer transitions 0/96 dead transitions. [2022-12-13 00:43:39,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 96 transitions, 502 flow [2022-12-13 00:43:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:43:39,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:43:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2022-12-13 00:43:39,734 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6973684210526315 [2022-12-13 00:43:39,734 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 159 flow. Second operand 4 states and 106 transitions. [2022-12-13 00:43:39,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 96 transitions, 502 flow [2022-12-13 00:43:39,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 96 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 00:43:39,737 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 361 flow [2022-12-13 00:43:39,737 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=361, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2022-12-13 00:43:39,737 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -20 predicate places. [2022-12-13 00:43:39,737 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:43:39,737 INFO L89 Accepts]: Start accepts. Operand has 59 places, 65 transitions, 361 flow [2022-12-13 00:43:39,738 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:43:39,738 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:43:39,738 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 65 transitions, 361 flow [2022-12-13 00:43:39,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 65 transitions, 361 flow [2022-12-13 00:43:39,818 INFO L130 PetriNetUnfolder]: 581/1354 cut-off events. [2022-12-13 00:43:39,818 INFO L131 PetriNetUnfolder]: For 1094/1295 co-relation queries the response was YES. [2022-12-13 00:43:39,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3959 conditions, 1354 events. 581/1354 cut-off events. For 1094/1295 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9899 event pairs, 194 based on Foata normal form. 0/1025 useless extension candidates. Maximal degree in co-relation 3944. Up to 693 conditions per place. [2022-12-13 00:43:39,830 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 65 transitions, 361 flow [2022-12-13 00:43:39,830 INFO L226 LiptonReduction]: Number of co-enabled transitions 1440 [2022-12-13 00:43:39,834 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:43:39,840 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 103 [2022-12-13 00:43:39,840 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 361 flow [2022-12-13 00:43:39,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 00:43:39,840 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:43:39,841 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:43:39,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 00:43:39,841 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:43:39,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:43:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1246546394, now seen corresponding path program 1 times [2022-12-13 00:43:39,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:43:39,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140291670] [2022-12-13 00:43:39,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:43:39,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:43:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:43:40,364 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 00:43:40,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:43:40,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140291670] [2022-12-13 00:43:40,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140291670] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:43:40,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:43:40,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:43:40,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254149900] [2022-12-13 00:43:40,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:43:40,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 00:43:40,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:43:40,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 00:43:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 00:43:40,372 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2022-12-13 00:43:40,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 361 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 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 00:43:40,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:43:40,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2022-12-13 00:43:40,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:43:42,331 INFO L130 PetriNetUnfolder]: 16498/24538 cut-off events. [2022-12-13 00:43:42,332 INFO L131 PetriNetUnfolder]: For 30503/31369 co-relation queries the response was YES. [2022-12-13 00:43:42,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75318 conditions, 24538 events. 16498/24538 cut-off events. For 30503/31369 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 165417 event pairs, 2223 based on Foata normal form. 713/20203 useless extension candidates. Maximal degree in co-relation 75300. Up to 13720 conditions per place. [2022-12-13 00:43:42,568 INFO L137 encePairwiseOnDemand]: 32/38 looper letters, 83 selfloop transitions, 15 changer transitions 0/119 dead transitions. [2022-12-13 00:43:42,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 119 transitions, 811 flow [2022-12-13 00:43:42,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 00:43:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 00:43:42,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2022-12-13 00:43:42,570 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6008771929824561 [2022-12-13 00:43:42,570 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 361 flow. Second operand 6 states and 137 transitions. [2022-12-13 00:43:42,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 119 transitions, 811 flow [2022-12-13 00:43:42,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 119 transitions, 811 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 00:43:42,581 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 465 flow [2022-12-13 00:43:42,581 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=465, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2022-12-13 00:43:42,582 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -14 predicate places. [2022-12-13 00:43:42,582 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:43:42,582 INFO L89 Accepts]: Start accepts. Operand has 65 places, 72 transitions, 465 flow [2022-12-13 00:43:42,582 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:43:42,583 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:43:42,583 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 72 transitions, 465 flow [2022-12-13 00:43:42,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 72 transitions, 465 flow [2022-12-13 00:43:42,700 INFO L130 PetriNetUnfolder]: 608/1486 cut-off events. [2022-12-13 00:43:42,700 INFO L131 PetriNetUnfolder]: For 1652/1855 co-relation queries the response was YES. [2022-12-13 00:43:42,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4783 conditions, 1486 events. 608/1486 cut-off events. For 1652/1855 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 11716 event pairs, 149 based on Foata normal form. 8/1122 useless extension candidates. Maximal degree in co-relation 4765. Up to 739 conditions per place. [2022-12-13 00:43:42,718 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 72 transitions, 465 flow [2022-12-13 00:43:42,719 INFO L226 LiptonReduction]: Number of co-enabled transitions 1618 [2022-12-13 00:43:42,722 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [372] L783-->L786: Formula: (= v_~z~0_1 1) InVars {} OutVars{~z~0=v_~z~0_1} AuxVars[] AssignedVars[~z~0] and [544] $Ultimate##0-->L819: Formula: (and (= v_~z$r_buff0_thd2~0_55 v_~z$r_buff1_thd2~0_55) (= |v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_37| |v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_37|) (= v_~z$w_buff0~0_403 v_~z$w_buff1~0_385) (= v_~z$r_buff0_thd4~0_161 v_~z$r_buff1_thd4~0_127) (= |v_P3Thread1of1ForFork2_~arg#1.base_31| |v_P3Thread1of1ForFork2_#in~arg#1.base_31|) (= v_~a~0_47 v_~__unbuffered_p3_EAX~0_149) (not (= |v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_37| 0)) (= |v_P3Thread1of1ForFork2_~arg#1.offset_31| |v_P3Thread1of1ForFork2_#in~arg#1.offset_31|) (= v_~z$r_buff0_thd1~0_51 v_~z$r_buff1_thd1~0_57) (= v_~z$w_buff0_used~0_519 1) (= v_~a~0_47 1) (= v_~z$r_buff0_thd0~0_372 v_~z$r_buff1_thd0~0_381) (= v_~z$w_buff0_used~0_520 v_~z$w_buff1_used~0_480) (= v_~z$r_buff0_thd4~0_160 1) (= v_~z$w_buff0~0_402 2) (= v_~z$r_buff0_thd3~0_102 v_~z$r_buff1_thd3~0_97) (= (ite (not (and (not (= (mod v_~z$w_buff1_used~0_480 256) 0)) (not (= (mod v_~z$w_buff0_used~0_519 256) 0)))) 1 0) |v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_37|)) InVars {~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_372, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_520, ~z$w_buff0~0=v_~z$w_buff0~0_403, P3Thread1of1ForFork2_#in~arg#1.offset=|v_P3Thread1of1ForFork2_#in~arg#1.offset_31|, P3Thread1of1ForFork2_#in~arg#1.base=|v_P3Thread1of1ForFork2_#in~arg#1.base_31|, ~z$r_buff0_thd4~0=v_~z$r_buff0_thd4~0_161, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_102, ~z$r_buff0_thd1~0=v_~z$r_buff0_thd1~0_51, ~z$r_buff0_thd2~0=v_~z$r_buff0_thd2~0_55} OutVars{~z$r_buff1_thd4~0=v_~z$r_buff1_thd4~0_127, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_519, ~z$w_buff0~0=v_~z$w_buff0~0_402, ~z$r_buff1_thd3~0=v_~z$r_buff1_thd3~0_97, P3Thread1of1ForFork2_#in~arg#1.offset=|v_P3Thread1of1ForFork2_#in~arg#1.offset_31|, ~z$r_buff1_thd2~0=v_~z$r_buff1_thd2~0_55, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_480, ~z$w_buff1~0=v_~z$w_buff1~0_385, P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1=|v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_37|, ~a~0=v_~a~0_47, P3Thread1of1ForFork2___VERIFIER_assert_~expression#1=|v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_37|, ~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_372, P3Thread1of1ForFork2_~arg#1.offset=|v_P3Thread1of1ForFork2_~arg#1.offset_31|, P3Thread1of1ForFork2_~arg#1.base=|v_P3Thread1of1ForFork2_~arg#1.base_31|, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_381, ~z$r_buff1_thd1~0=v_~z$r_buff1_thd1~0_57, P3Thread1of1ForFork2_#in~arg#1.base=|v_P3Thread1of1ForFork2_#in~arg#1.base_31|, ~__unbuffered_p3_EAX~0=v_~__unbuffered_p3_EAX~0_149, ~z$r_buff0_thd4~0=v_~z$r_buff0_thd4~0_160, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_102, ~z$r_buff0_thd1~0=v_~z$r_buff0_thd1~0_51, ~z$r_buff0_thd2~0=v_~z$r_buff0_thd2~0_55} AuxVars[] AssignedVars[~z$r_buff1_thd4~0, ~z$w_buff0_used~0, ~z$w_buff0~0, ~z$r_buff1_thd3~0, ~z$r_buff1_thd2~0, ~z$w_buff1_used~0, ~z$w_buff1~0, P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1, ~a~0, P3Thread1of1ForFork2___VERIFIER_assert_~expression#1, P3Thread1of1ForFork2_~arg#1.offset, P3Thread1of1ForFork2_~arg#1.base, ~z$r_buff1_thd0~0, ~z$r_buff1_thd1~0, ~__unbuffered_p3_EAX~0, ~z$r_buff0_thd4~0] [2022-12-13 00:43:42,821 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 00:43:42,823 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 241 [2022-12-13 00:43:42,823 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 469 flow [2022-12-13 00:43:42,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 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 00:43:42,824 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:43:42,824 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:43:42,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 00:43:42,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:43:42,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:43:42,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1430473710, now seen corresponding path program 1 times [2022-12-13 00:43:42,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:43:42,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590096634] [2022-12-13 00:43:42,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:43:42,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:43:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:43:43,011 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 00:43:43,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:43:43,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590096634] [2022-12-13 00:43:43,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590096634] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:43:43,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:43:43,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:43:43,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352457736] [2022-12-13 00:43:43,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:43:43,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:43:43,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:43:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:43:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:43:43,013 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2022-12-13 00:43:43,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 469 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 00:43:43,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:43:43,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2022-12-13 00:43:43,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:43:46,249 INFO L130 PetriNetUnfolder]: 30142/41725 cut-off events. [2022-12-13 00:43:46,249 INFO L131 PetriNetUnfolder]: For 90334/95749 co-relation queries the response was YES. [2022-12-13 00:43:46,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138160 conditions, 41725 events. 30142/41725 cut-off events. For 90334/95749 co-relation queries the response was YES. Maximal size of possible extension queue 2350. Compared 270817 event pairs, 9623 based on Foata normal form. 2074/28602 useless extension candidates. Maximal degree in co-relation 138139. Up to 39247 conditions per place. [2022-12-13 00:43:46,564 INFO L137 encePairwiseOnDemand]: 25/39 looper letters, 82 selfloop transitions, 13 changer transitions 0/115 dead transitions. [2022-12-13 00:43:46,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 115 transitions, 929 flow [2022-12-13 00:43:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:43:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:43:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 83 transitions. [2022-12-13 00:43:46,566 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7094017094017094 [2022-12-13 00:43:46,566 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 469 flow. Second operand 3 states and 83 transitions. [2022-12-13 00:43:46,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 115 transitions, 929 flow [2022-12-13 00:43:46,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 115 transitions, 928 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 00:43:46,583 INFO L231 Difference]: Finished difference. Result has 67 places, 84 transitions, 557 flow [2022-12-13 00:43:46,583 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=557, PETRI_PLACES=67, PETRI_TRANSITIONS=84} [2022-12-13 00:43:46,584 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -12 predicate places. [2022-12-13 00:43:46,584 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:43:46,584 INFO L89 Accepts]: Start accepts. Operand has 67 places, 84 transitions, 557 flow [2022-12-13 00:43:46,585 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:43:46,585 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:43:46,585 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 84 transitions, 557 flow [2022-12-13 00:43:46,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 84 transitions, 557 flow [2022-12-13 00:43:47,724 INFO L130 PetriNetUnfolder]: 12234/19278 cut-off events. [2022-12-13 00:43:47,724 INFO L131 PetriNetUnfolder]: For 9600/11813 co-relation queries the response was YES. [2022-12-13 00:43:47,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49847 conditions, 19278 events. 12234/19278 cut-off events. For 9600/11813 co-relation queries the response was YES. Maximal size of possible extension queue 2406. Compared 164304 event pairs, 5973 based on Foata normal form. 306/9856 useless extension candidates. Maximal degree in co-relation 49827. Up to 14419 conditions per place. [2022-12-13 00:43:47,891 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 84 transitions, 557 flow [2022-12-13 00:43:47,892 INFO L226 LiptonReduction]: Number of co-enabled transitions 2166 [2022-12-13 00:43:47,972 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:43:47,972 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1388 [2022-12-13 00:43:47,972 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 84 transitions, 557 flow [2022-12-13 00:43:47,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 00:43:47,973 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:43:47,973 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:43:47,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 00:43:47,973 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:43:47,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:43:47,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2088660458, now seen corresponding path program 1 times [2022-12-13 00:43:47,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:43:47,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758005264] [2022-12-13 00:43:47,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:43:47,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:43:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:43:48,872 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 00:43:48,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:43:48,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758005264] [2022-12-13 00:43:48,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758005264] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:43:48,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:43:48,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:43:48,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404243628] [2022-12-13 00:43:48,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:43:48,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 00:43:48,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:43:48,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 00:43:48,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 00:43:48,873 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 39 [2022-12-13 00:43:48,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 84 transitions, 557 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 00:43:48,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:43:48,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 39 [2022-12-13 00:43:48,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:43:52,482 INFO L130 PetriNetUnfolder]: 37116/52023 cut-off events. [2022-12-13 00:43:52,482 INFO L131 PetriNetUnfolder]: For 90554/92176 co-relation queries the response was YES. [2022-12-13 00:43:52,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193409 conditions, 52023 events. 37116/52023 cut-off events. For 90554/92176 co-relation queries the response was YES. Maximal size of possible extension queue 2849. Compared 349322 event pairs, 6904 based on Foata normal form. 408/41076 useless extension candidates. Maximal degree in co-relation 193386. Up to 35864 conditions per place. [2022-12-13 00:43:52,967 INFO L137 encePairwiseOnDemand]: 29/39 looper letters, 136 selfloop transitions, 25 changer transitions 0/174 dead transitions. [2022-12-13 00:43:52,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 174 transitions, 1431 flow [2022-12-13 00:43:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 00:43:52,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 00:43:52,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2022-12-13 00:43:52,969 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6512820512820513 [2022-12-13 00:43:52,969 INFO L175 Difference]: Start difference. First operand has 67 places, 84 transitions, 557 flow. Second operand 5 states and 127 transitions. [2022-12-13 00:43:52,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 174 transitions, 1431 flow [2022-12-13 00:43:52,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 174 transitions, 1400 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 00:43:53,001 INFO L231 Difference]: Finished difference. Result has 73 places, 103 transitions, 846 flow [2022-12-13 00:43:53,001 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=846, PETRI_PLACES=73, PETRI_TRANSITIONS=103} [2022-12-13 00:43:53,002 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -6 predicate places. [2022-12-13 00:43:53,002 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:43:53,002 INFO L89 Accepts]: Start accepts. Operand has 73 places, 103 transitions, 846 flow [2022-12-13 00:43:53,003 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:43:53,003 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:43:53,003 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 103 transitions, 846 flow [2022-12-13 00:43:53,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 103 transitions, 846 flow [2022-12-13 00:43:54,483 INFO L130 PetriNetUnfolder]: 13607/21692 cut-off events. [2022-12-13 00:43:54,483 INFO L131 PetriNetUnfolder]: For 14455/16503 co-relation queries the response was YES. [2022-12-13 00:43:54,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56324 conditions, 21692 events. 13607/21692 cut-off events. For 14455/16503 co-relation queries the response was YES. Maximal size of possible extension queue 2939. Compared 191971 event pairs, 6523 based on Foata normal form. 389/10800 useless extension candidates. Maximal degree in co-relation 56300. Up to 16840 conditions per place. [2022-12-13 00:43:54,672 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 103 transitions, 846 flow [2022-12-13 00:43:54,672 INFO L226 LiptonReduction]: Number of co-enabled transitions 2588 [2022-12-13 00:43:55,866 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 00:43:55,867 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2865 [2022-12-13 00:43:55,867 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 103 transitions, 856 flow [2022-12-13 00:43:55,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 00:43:55,867 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:43:55,867 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:43:55,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 00:43:55,868 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:43:55,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:43:55,868 INFO L85 PathProgramCache]: Analyzing trace with hash -920642494, now seen corresponding path program 1 times [2022-12-13 00:43:55,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:43:55,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848193750] [2022-12-13 00:43:55,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:43:55,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:43:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:43:55,989 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 00:43:55,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:43:55,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848193750] [2022-12-13 00:43:55,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848193750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:43:55,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:43:55,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 00:43:55,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064173177] [2022-12-13 00:43:55,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:43:55,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:43:55,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:43:55,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:43:55,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:43:55,991 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2022-12-13 00:43:55,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 103 transitions, 856 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 00:43:55,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:43:55,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2022-12-13 00:43:55,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:43:58,616 INFO L130 PetriNetUnfolder]: 22279/32594 cut-off events. [2022-12-13 00:43:58,616 INFO L131 PetriNetUnfolder]: For 101538/105933 co-relation queries the response was YES. [2022-12-13 00:43:58,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135449 conditions, 32594 events. 22279/32594 cut-off events. For 101538/105933 co-relation queries the response was YES. Maximal size of possible extension queue 2043. Compared 228682 event pairs, 3413 based on Foata normal form. 2153/23277 useless extension candidates. Maximal degree in co-relation 135422. Up to 27568 conditions per place. [2022-12-13 00:43:58,883 INFO L137 encePairwiseOnDemand]: 26/40 looper letters, 135 selfloop transitions, 25 changer transitions 0/185 dead transitions. [2022-12-13 00:43:58,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 185 transitions, 1913 flow [2022-12-13 00:43:58,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:43:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:43:58,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2022-12-13 00:43:58,884 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.71875 [2022-12-13 00:43:58,884 INFO L175 Difference]: Start difference. First operand has 73 places, 103 transitions, 856 flow. Second operand 4 states and 115 transitions. [2022-12-13 00:43:58,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 185 transitions, 1913 flow [2022-12-13 00:43:58,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 185 transitions, 1879 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 00:43:58,947 INFO L231 Difference]: Finished difference. Result has 76 places, 114 transitions, 971 flow [2022-12-13 00:43:58,947 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=971, PETRI_PLACES=76, PETRI_TRANSITIONS=114} [2022-12-13 00:43:58,947 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, -3 predicate places. [2022-12-13 00:43:58,948 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:43:58,948 INFO L89 Accepts]: Start accepts. Operand has 76 places, 114 transitions, 971 flow [2022-12-13 00:43:58,948 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:43:58,949 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:43:58,949 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 114 transitions, 971 flow [2022-12-13 00:43:58,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 114 transitions, 971 flow [2022-12-13 00:44:00,106 INFO L130 PetriNetUnfolder]: 9350/16094 cut-off events. [2022-12-13 00:44:00,106 INFO L131 PetriNetUnfolder]: For 16746/23229 co-relation queries the response was YES. [2022-12-13 00:44:00,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57944 conditions, 16094 events. 9350/16094 cut-off events. For 16746/23229 co-relation queries the response was YES. Maximal size of possible extension queue 2267. Compared 146613 event pairs, 2337 based on Foata normal form. 244/8938 useless extension candidates. Maximal degree in co-relation 57918. Up to 11665 conditions per place. [2022-12-13 00:44:00,224 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 114 transitions, 971 flow [2022-12-13 00:44:00,224 INFO L226 LiptonReduction]: Number of co-enabled transitions 3040 [2022-12-13 00:44:00,708 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 00:44:00,709 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1761 [2022-12-13 00:44:00,709 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 114 transitions, 979 flow [2022-12-13 00:44:00,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 00:44:00,709 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:44:00,709 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:44:00,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 00:44:00,709 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:44:00,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:44:00,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1788480703, now seen corresponding path program 1 times [2022-12-13 00:44:00,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:44:00,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894199139] [2022-12-13 00:44:00,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:44:00,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:44:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:44:01,138 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 00:44:01,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:44:01,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894199139] [2022-12-13 00:44:01,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894199139] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:44:01,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:44:01,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:44:01,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110755835] [2022-12-13 00:44:01,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:44:01,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:44:01,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:44:01,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:44:01,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:44:01,140 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2022-12-13 00:44:01,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 114 transitions, 979 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 00:44:01,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:44:01,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2022-12-13 00:44:01,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:44:05,811 INFO L130 PetriNetUnfolder]: 37890/55922 cut-off events. [2022-12-13 00:44:05,811 INFO L131 PetriNetUnfolder]: For 162112/168390 co-relation queries the response was YES. [2022-12-13 00:44:06,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257495 conditions, 55922 events. 37890/55922 cut-off events. For 162112/168390 co-relation queries the response was YES. Maximal size of possible extension queue 3461. Compared 417886 event pairs, 4836 based on Foata normal form. 2089/47425 useless extension candidates. Maximal degree in co-relation 257466. Up to 32339 conditions per place. [2022-12-13 00:44:06,247 INFO L137 encePairwiseOnDemand]: 28/41 looper letters, 204 selfloop transitions, 45 changer transitions 5/271 dead transitions. [2022-12-13 00:44:06,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 271 transitions, 2692 flow [2022-12-13 00:44:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 00:44:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 00:44:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2022-12-13 00:44:06,274 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2022-12-13 00:44:06,274 INFO L175 Difference]: Start difference. First operand has 76 places, 114 transitions, 979 flow. Second operand 6 states and 164 transitions. [2022-12-13 00:44:06,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 271 transitions, 2692 flow [2022-12-13 00:44:06,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 271 transitions, 2554 flow, removed 34 selfloop flow, removed 2 redundant places. [2022-12-13 00:44:06,385 INFO L231 Difference]: Finished difference. Result has 82 places, 138 transitions, 1395 flow [2022-12-13 00:44:06,386 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1395, PETRI_PLACES=82, PETRI_TRANSITIONS=138} [2022-12-13 00:44:06,386 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2022-12-13 00:44:06,386 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:44:06,386 INFO L89 Accepts]: Start accepts. Operand has 82 places, 138 transitions, 1395 flow [2022-12-13 00:44:06,387 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:44:06,387 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:44:06,387 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 138 transitions, 1395 flow [2022-12-13 00:44:06,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 138 transitions, 1395 flow [2022-12-13 00:44:08,317 INFO L130 PetriNetUnfolder]: 15552/26631 cut-off events. [2022-12-13 00:44:08,318 INFO L131 PetriNetUnfolder]: For 42569/48235 co-relation queries the response was YES. [2022-12-13 00:44:08,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92402 conditions, 26631 events. 15552/26631 cut-off events. For 42569/48235 co-relation queries the response was YES. Maximal size of possible extension queue 3552. Compared 255432 event pairs, 3557 based on Foata normal form. 917/14962 useless extension candidates. Maximal degree in co-relation 92373. Up to 19756 conditions per place. [2022-12-13 00:44:08,599 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 138 transitions, 1395 flow [2022-12-13 00:44:08,599 INFO L226 LiptonReduction]: Number of co-enabled transitions 3808 [2022-12-13 00:44:08,810 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:44:08,811 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2425 [2022-12-13 00:44:08,811 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 138 transitions, 1395 flow [2022-12-13 00:44:08,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 00:44:08,811 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:44:08,812 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:44:08,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 00:44:08,812 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:44:08,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:44:08,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1156979767, now seen corresponding path program 2 times [2022-12-13 00:44:08,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:44:08,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438111218] [2022-12-13 00:44:08,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:44:08,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:44:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:44:09,242 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 00:44:09,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:44:09,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438111218] [2022-12-13 00:44:09,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438111218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:44:09,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:44:09,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 00:44:09,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342728788] [2022-12-13 00:44:09,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:44:09,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:44:09,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:44:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:44:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:44:09,244 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2022-12-13 00:44:09,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 138 transitions, 1395 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 00:44:09,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:44:09,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2022-12-13 00:44:09,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:44:16,127 INFO L130 PetriNetUnfolder]: 51417/76025 cut-off events. [2022-12-13 00:44:16,127 INFO L131 PetriNetUnfolder]: For 277124/282793 co-relation queries the response was YES. [2022-12-13 00:44:16,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342837 conditions, 76025 events. 51417/76025 cut-off events. For 277124/282793 co-relation queries the response was YES. Maximal size of possible extension queue 4838. Compared 590878 event pairs, 11810 based on Foata normal form. 2519/63385 useless extension candidates. Maximal degree in co-relation 342805. Up to 43902 conditions per place. [2022-12-13 00:44:16,779 INFO L137 encePairwiseOnDemand]: 34/41 looper letters, 139 selfloop transitions, 28 changer transitions 15/199 dead transitions. [2022-12-13 00:44:16,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 199 transitions, 2167 flow [2022-12-13 00:44:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:44:16,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:44:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2022-12-13 00:44:16,780 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6524390243902439 [2022-12-13 00:44:16,780 INFO L175 Difference]: Start difference. First operand has 82 places, 138 transitions, 1395 flow. Second operand 4 states and 107 transitions. [2022-12-13 00:44:16,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 199 transitions, 2167 flow [2022-12-13 00:44:17,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 199 transitions, 2161 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 00:44:17,128 INFO L231 Difference]: Finished difference. Result has 86 places, 129 transitions, 1326 flow [2022-12-13 00:44:17,128 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1326, PETRI_PLACES=86, PETRI_TRANSITIONS=129} [2022-12-13 00:44:17,129 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 7 predicate places. [2022-12-13 00:44:17,129 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:44:17,129 INFO L89 Accepts]: Start accepts. Operand has 86 places, 129 transitions, 1326 flow [2022-12-13 00:44:17,130 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:44:17,130 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:44:17,130 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 129 transitions, 1326 flow [2022-12-13 00:44:17,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 129 transitions, 1326 flow [2022-12-13 00:44:19,387 INFO L130 PetriNetUnfolder]: 21015/36010 cut-off events. [2022-12-13 00:44:19,387 INFO L131 PetriNetUnfolder]: For 46428/54456 co-relation queries the response was YES. [2022-12-13 00:44:19,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119726 conditions, 36010 events. 21015/36010 cut-off events. For 46428/54456 co-relation queries the response was YES. Maximal size of possible extension queue 4948. Compared 360823 event pairs, 5265 based on Foata normal form. 847/18978 useless extension candidates. Maximal degree in co-relation 119694. Up to 27658 conditions per place. [2022-12-13 00:44:19,782 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 129 transitions, 1326 flow [2022-12-13 00:44:19,782 INFO L226 LiptonReduction]: Number of co-enabled transitions 3460 [2022-12-13 00:44:20,005 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:44:20,005 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2876 [2022-12-13 00:44:20,006 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 129 transitions, 1326 flow [2022-12-13 00:44:20,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 00:44:20,006 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:44:20,006 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:44:20,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 00:44:20,006 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:44:20,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:44:20,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1723222525, now seen corresponding path program 1 times [2022-12-13 00:44:20,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:44:20,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123613458] [2022-12-13 00:44:20,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:44:20,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:44:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:44:20,111 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 00:44:20,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:44:20,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123613458] [2022-12-13 00:44:20,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123613458] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:44:20,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:44:20,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:44:20,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944068638] [2022-12-13 00:44:20,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:44:20,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:44:20,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:44:20,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:44:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:44:20,113 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2022-12-13 00:44:20,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 129 transitions, 1326 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 00:44:20,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:44:20,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2022-12-13 00:44:20,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:44:23,550 INFO L130 PetriNetUnfolder]: 23799/36993 cut-off events. [2022-12-13 00:44:23,551 INFO L131 PetriNetUnfolder]: For 140989/147413 co-relation queries the response was YES. [2022-12-13 00:44:23,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170328 conditions, 36993 events. 23799/36993 cut-off events. For 140989/147413 co-relation queries the response was YES. Maximal size of possible extension queue 2385. Compared 296555 event pairs, 1393 based on Foata normal form. 5312/27456 useless extension candidates. Maximal degree in co-relation 170293. Up to 21574 conditions per place. [2022-12-13 00:44:23,737 INFO L137 encePairwiseOnDemand]: 25/40 looper letters, 137 selfloop transitions, 37 changer transitions 49/248 dead transitions. [2022-12-13 00:44:23,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 248 transitions, 3135 flow [2022-12-13 00:44:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 00:44:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 00:44:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2022-12-13 00:44:23,739 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.725 [2022-12-13 00:44:23,739 INFO L175 Difference]: Start difference. First operand has 86 places, 129 transitions, 1326 flow. Second operand 5 states and 145 transitions. [2022-12-13 00:44:23,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 248 transitions, 3135 flow [2022-12-13 00:44:23,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 248 transitions, 3108 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 00:44:23,817 INFO L231 Difference]: Finished difference. Result has 90 places, 126 transitions, 1256 flow [2022-12-13 00:44:23,817 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1256, PETRI_PLACES=90, PETRI_TRANSITIONS=126} [2022-12-13 00:44:23,817 INFO L295 CegarLoopForPetriNet]: 79 programPoint places, 11 predicate places. [2022-12-13 00:44:23,817 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:44:23,818 INFO L89 Accepts]: Start accepts. Operand has 90 places, 126 transitions, 1256 flow [2022-12-13 00:44:23,819 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:44:23,819 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:44:23,819 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 126 transitions, 1256 flow [2022-12-13 00:44:23,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 126 transitions, 1256 flow [2022-12-13 00:44:25,132 INFO L130 PetriNetUnfolder]: 9462/18121 cut-off events. [2022-12-13 00:44:25,132 INFO L131 PetriNetUnfolder]: For 26358/33270 co-relation queries the response was YES. [2022-12-13 00:44:25,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77622 conditions, 18121 events. 9462/18121 cut-off events. For 26358/33270 co-relation queries the response was YES. Maximal size of possible extension queue 2223. Compared 185149 event pairs, 870 based on Foata normal form. 248/9664 useless extension candidates. Maximal degree in co-relation 77588. Up to 13276 conditions per place. [2022-12-13 00:44:25,301 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 126 transitions, 1256 flow [2022-12-13 00:44:25,301 INFO L226 LiptonReduction]: Number of co-enabled transitions 2924 [2022-12-13 00:44:25,324 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [372] L783-->L786: Formula: (= v_~z~0_1 1) InVars {} OutVars{~z~0=v_~z~0_1} AuxVars[] AssignedVars[~z~0] and [544] $Ultimate##0-->L819: Formula: (and (= v_~z$r_buff0_thd2~0_55 v_~z$r_buff1_thd2~0_55) (= |v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_37| |v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_37|) (= v_~z$w_buff0~0_403 v_~z$w_buff1~0_385) (= v_~z$r_buff0_thd4~0_161 v_~z$r_buff1_thd4~0_127) (= |v_P3Thread1of1ForFork2_~arg#1.base_31| |v_P3Thread1of1ForFork2_#in~arg#1.base_31|) (= v_~a~0_47 v_~__unbuffered_p3_EAX~0_149) (not (= |v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_37| 0)) (= |v_P3Thread1of1ForFork2_~arg#1.offset_31| |v_P3Thread1of1ForFork2_#in~arg#1.offset_31|) (= v_~z$r_buff0_thd1~0_51 v_~z$r_buff1_thd1~0_57) (= v_~z$w_buff0_used~0_519 1) (= v_~a~0_47 1) (= v_~z$r_buff0_thd0~0_372 v_~z$r_buff1_thd0~0_381) (= v_~z$w_buff0_used~0_520 v_~z$w_buff1_used~0_480) (= v_~z$r_buff0_thd4~0_160 1) (= v_~z$w_buff0~0_402 2) (= v_~z$r_buff0_thd3~0_102 v_~z$r_buff1_thd3~0_97) (= (ite (not (and (not (= (mod v_~z$w_buff1_used~0_480 256) 0)) (not (= (mod v_~z$w_buff0_used~0_519 256) 0)))) 1 0) |v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_37|)) InVars {~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_372, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_520, ~z$w_buff0~0=v_~z$w_buff0~0_403, P3Thread1of1ForFork2_#in~arg#1.offset=|v_P3Thread1of1ForFork2_#in~arg#1.offset_31|, P3Thread1of1ForFork2_#in~arg#1.base=|v_P3Thread1of1ForFork2_#in~arg#1.base_31|, ~z$r_buff0_thd4~0=v_~z$r_buff0_thd4~0_161, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_102, ~z$r_buff0_thd1~0=v_~z$r_buff0_thd1~0_51, ~z$r_buff0_thd2~0=v_~z$r_buff0_thd2~0_55} OutVars{~z$r_buff1_thd4~0=v_~z$r_buff1_thd4~0_127, ~z$w_buff0_used~0=v_~z$w_buff0_used~0_519, ~z$w_buff0~0=v_~z$w_buff0~0_402, ~z$r_buff1_thd3~0=v_~z$r_buff1_thd3~0_97, P3Thread1of1ForFork2_#in~arg#1.offset=|v_P3Thread1of1ForFork2_#in~arg#1.offset_31|, ~z$r_buff1_thd2~0=v_~z$r_buff1_thd2~0_55, ~z$w_buff1_used~0=v_~z$w_buff1_used~0_480, ~z$w_buff1~0=v_~z$w_buff1~0_385, P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1=|v_P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1_37|, ~a~0=v_~a~0_47, P3Thread1of1ForFork2___VERIFIER_assert_~expression#1=|v_P3Thread1of1ForFork2___VERIFIER_assert_~expression#1_37|, ~z$r_buff0_thd0~0=v_~z$r_buff0_thd0~0_372, P3Thread1of1ForFork2_~arg#1.offset=|v_P3Thread1of1ForFork2_~arg#1.offset_31|, P3Thread1of1ForFork2_~arg#1.base=|v_P3Thread1of1ForFork2_~arg#1.base_31|, ~z$r_buff1_thd0~0=v_~z$r_buff1_thd0~0_381, ~z$r_buff1_thd1~0=v_~z$r_buff1_thd1~0_57, P3Thread1of1ForFork2_#in~arg#1.base=|v_P3Thread1of1ForFork2_#in~arg#1.base_31|, ~__unbuffered_p3_EAX~0=v_~__unbuffered_p3_EAX~0_149, ~z$r_buff0_thd4~0=v_~z$r_buff0_thd4~0_160, ~z$r_buff0_thd3~0=v_~z$r_buff0_thd3~0_102, ~z$r_buff0_thd1~0=v_~z$r_buff0_thd1~0_51, ~z$r_buff0_thd2~0=v_~z$r_buff0_thd2~0_55} AuxVars[] AssignedVars[~z$r_buff1_thd4~0, ~z$w_buff0_used~0, ~z$w_buff0~0, ~z$r_buff1_thd3~0, ~z$r_buff1_thd2~0, ~z$w_buff1_used~0, ~z$w_buff1~0, P3Thread1of1ForFork2___VERIFIER_assert_#in~expression#1, ~a~0, P3Thread1of1ForFork2___VERIFIER_assert_~expression#1, P3Thread1of1ForFork2_~arg#1.offset, P3Thread1of1ForFork2_~arg#1.base, ~z$r_buff1_thd0~0, ~z$r_buff1_thd1~0, ~__unbuffered_p3_EAX~0, ~z$r_buff0_thd4~0] [2022-12-13 00:44:25,591 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 00:44:25,592 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1775 [2022-12-13 00:44:25,592 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 126 transitions, 1260 flow [2022-12-13 00:44:25,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 00:44:25,592 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:44:25,592 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:44:25,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 00:44:25,593 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 00:44:25,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:44:25,593 INFO L85 PathProgramCache]: Analyzing trace with hash 607138246, now seen corresponding path program 1 times [2022-12-13 00:44:25,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:44:25,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824145215] [2022-12-13 00:44:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:44:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:44:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:44:26,029 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 00:44:26,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:44:26,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824145215] [2022-12-13 00:44:26,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824145215] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:44:26,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:44:26,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 00:44:26,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755818356] [2022-12-13 00:44:26,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:44:26,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 00:44:26,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:44:26,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 00:44:26,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 00:44:26,030 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2022-12-13 00:44:26,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 126 transitions, 1260 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 00:44:26,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:44:26,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2022-12-13 00:44:26,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand