/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 11:49:39,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:49:39,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:49:39,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:49:39,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:49:39,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:49:39,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:49:39,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:49:40,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:49:40,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:49:40,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:49:40,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:49:40,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:49:40,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:49:40,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:49:40,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:49:40,013 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:49:40,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:49:40,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:49:40,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:49:40,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:49:40,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:49:40,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:49:40,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:49:40,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:49:40,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:49:40,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:49:40,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:49:40,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:49:40,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:49:40,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:49:40,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:49:40,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:49:40,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:49:40,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:49:40,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:49:40,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:49:40,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:49:40,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:49:40,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:49:40,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:49:40,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2022-12-13 11:49:40,084 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:49:40,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:49:40,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:49:40,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:49:40,087 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:49:40,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:49:40,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:49:40,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:49:40,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:49:40,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:49:40,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:49:40,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:49:40,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:49:40,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:49:40,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:49:40,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:49:40,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:49:40,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:49:40,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:49:40,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 11:49:40,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:49:40,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:49:40,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:49:40,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:49:40,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:49:40,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:49:40,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:49:40,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 11:49:40,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 11:49:40,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:49:40,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:49:40,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:49:40,420 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:49:40,423 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:49:40,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 11:49:41,498 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:49:41,737 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:49:41,737 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix027_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 11:49:41,748 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b98be729/d07aa1f7a182490eb36fdd2ac6dd15e4/FLAG2f85bfece [2022-12-13 11:49:41,761 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b98be729/d07aa1f7a182490eb36fdd2ac6dd15e4 [2022-12-13 11:49:41,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:49:41,764 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 11:49:41,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:49:41,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:49:41,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:49:41,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:49:41" (1/1) ... [2022-12-13 11:49:41,769 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53795f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:41, skipping insertion in model container [2022-12-13 11:49:41,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:49:41" (1/1) ... [2022-12-13 11:49:41,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:49:41,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:49:41,938 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/mix027_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 11:49:42,108 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,110 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,113 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,120 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,121 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,162 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,168 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,169 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,171 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:49:42,186 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:49:42,199 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/mix027_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 11:49:42,224 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,225 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,229 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,229 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,229 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,229 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,230 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,232 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,232 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,237 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,243 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,244 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,245 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,249 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,251 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 11:49:42,252 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 11:49:42,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:49:42,289 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:49:42,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42 WrapperNode [2022-12-13 11:49:42,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:49:42,291 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:49:42,291 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:49:42,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:49:42,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42" (1/1) ... [2022-12-13 11:49:42,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42" (1/1) ... [2022-12-13 11:49:42,356 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2022-12-13 11:49:42,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:49:42,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:49:42,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:49:42,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:49:42,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42" (1/1) ... [2022-12-13 11:49:42,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42" (1/1) ... [2022-12-13 11:49:42,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42" (1/1) ... [2022-12-13 11:49:42,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42" (1/1) ... [2022-12-13 11:49:42,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42" (1/1) ... [2022-12-13 11:49:42,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42" (1/1) ... [2022-12-13 11:49:42,403 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42" (1/1) ... [2022-12-13 11:49:42,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42" (1/1) ... [2022-12-13 11:49:42,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:49:42,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:49:42,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:49:42,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:49:42,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42" (1/1) ... [2022-12-13 11:49:42,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:49:42,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 11:49:42,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:49:42,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:49:42,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 11:49:42,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 11:49:42,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:49:42,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 11:49:42,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 11:49:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 11:49:42,483 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 11:49:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 11:49:42,483 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 11:49:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 11:49:42,483 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 11:49:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 11:49:42,483 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 11:49:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:49:42,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 11:49:42,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:49:42,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:49:42,485 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 11:49:42,612 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 11:49:42,613 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:49:42,931 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 11:49:43,174 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:49:43,174 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:49:43,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:49:43 BoogieIcfgContainer [2022-12-13 11:49:43,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:49:43,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:49:43,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:49:43,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:49:43,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:49:41" (1/3) ... [2022-12-13 11:49:43,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342a71c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:49:43, skipping insertion in model container [2022-12-13 11:49:43,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:49:42" (2/3) ... [2022-12-13 11:49:43,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342a71c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:49:43, skipping insertion in model container [2022-12-13 11:49:43,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:49:43" (3/3) ... [2022-12-13 11:49:43,190 INFO L112 eAbstractionObserver]: Analyzing ICFG mix027_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 11:49:43,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:49:43,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 11:49:43,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 11:49:43,285 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 11:49:43,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 130 transitions, 280 flow [2022-12-13 11:49:43,390 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-13 11:49:43,391 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:49:43,398 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 71 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 11:49:43,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 130 transitions, 280 flow [2022-12-13 11:49:43,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 126 transitions, 264 flow [2022-12-13 11:49:43,405 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:49:43,421 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 126 transitions, 264 flow [2022-12-13 11:49:43,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 126 transitions, 264 flow [2022-12-13 11:49:43,489 INFO L130 PetriNetUnfolder]: 2/126 cut-off events. [2022-12-13 11:49:43,489 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:49:43,494 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 71 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-12-13 11:49:43,501 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 126 transitions, 264 flow [2022-12-13 11:49:43,501 INFO L226 LiptonReduction]: Number of co-enabled transitions 3164 [2022-12-13 11:49:49,281 INFO L241 LiptonReduction]: Total number of compositions: 99 [2022-12-13 11:49:49,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:49:49,300 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;@16ec639f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 11:49:49,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 11:49:49,303 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 11:49:49,303 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:49:49,303 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:49:49,304 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 11:49:49,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:49:49,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:49:49,308 INFO L85 PathProgramCache]: Analyzing trace with hash 568663, now seen corresponding path program 1 times [2022-12-13 11:49:49,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:49:49,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960645473] [2022-12-13 11:49:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:49:49,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:49:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:49:49,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:49:49,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960645473] [2022-12-13 11:49:49,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960645473] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:49:49,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:49:49,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:49:49,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135358197] [2022-12-13 11:49:49,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:49:49,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:49:49,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:49:49,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:49:49,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:49:49,710 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 83 [2022-12-13 11:49:49,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:49,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:49:49,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 83 [2022-12-13 11:49:49,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:49:57,303 INFO L130 PetriNetUnfolder]: 66790/97374 cut-off events. [2022-12-13 11:49:57,303 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2022-12-13 11:49:57,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185663 conditions, 97374 events. 66790/97374 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 4514. Compared 790516 event pairs, 9970 based on Foata normal form. 0/63342 useless extension candidates. Maximal degree in co-relation 185651. Up to 73765 conditions per place. [2022-12-13 11:49:57,607 INFO L137 encePairwiseOnDemand]: 78/83 looper letters, 48 selfloop transitions, 2 changer transitions 71/137 dead transitions. [2022-12-13 11:49:57,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 137 transitions, 535 flow [2022-12-13 11:49:57,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:49:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:49:57,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2022-12-13 11:49:57,620 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7068273092369478 [2022-12-13 11:49:57,621 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 178 flow. Second operand 3 states and 176 transitions. [2022-12-13 11:49:57,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 137 transitions, 535 flow [2022-12-13 11:49:57,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 137 transitions, 528 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 11:49:57,630 INFO L231 Difference]: Finished difference. Result has 91 places, 44 transitions, 100 flow [2022-12-13 11:49:57,632 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=91, PETRI_TRANSITIONS=44} [2022-12-13 11:49:57,637 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -4 predicate places. [2022-12-13 11:49:57,637 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:49:57,638 INFO L89 Accepts]: Start accepts. Operand has 91 places, 44 transitions, 100 flow [2022-12-13 11:49:57,642 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:49:57,642 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:49:57,643 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 44 transitions, 100 flow [2022-12-13 11:49:57,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 44 transitions, 100 flow [2022-12-13 11:49:57,652 INFO L130 PetriNetUnfolder]: 0/44 cut-off events. [2022-12-13 11:49:57,652 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 11:49:57,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 44 events. 0/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 122 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 11:49:57,656 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 44 transitions, 100 flow [2022-12-13 11:49:57,656 INFO L226 LiptonReduction]: Number of co-enabled transitions 1158 [2022-12-13 11:49:57,845 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:49:57,847 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 210 [2022-12-13 11:49:57,847 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 100 flow [2022-12-13 11:49:57,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:57,847 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:49:57,848 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:49:57,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:49:57,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:49:57,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:49:57,853 INFO L85 PathProgramCache]: Analyzing trace with hash 486257866, now seen corresponding path program 1 times [2022-12-13 11:49:57,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:49:57,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790085990] [2022-12-13 11:49:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:49:57,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:49:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:49:58,108 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 11:49:58,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:49:58,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790085990] [2022-12-13 11:49:58,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790085990] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:49:58,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:49:58,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 11:49:58,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168671666] [2022-12-13 11:49:58,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:49:58,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:49:58,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:49:58,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:49:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:49:58,111 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 11:49:58,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:58,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:49:58,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 11:49:58,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:50:02,568 INFO L130 PetriNetUnfolder]: 44861/62125 cut-off events. [2022-12-13 11:50:02,568 INFO L131 PetriNetUnfolder]: For 2199/2199 co-relation queries the response was YES. [2022-12-13 11:50:02,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125029 conditions, 62125 events. 44861/62125 cut-off events. For 2199/2199 co-relation queries the response was YES. Maximal size of possible extension queue 2040. Compared 391804 event pairs, 15525 based on Foata normal form. 0/50817 useless extension candidates. Maximal degree in co-relation 125019. Up to 34685 conditions per place. [2022-12-13 11:50:02,910 INFO L137 encePairwiseOnDemand]: 35/44 looper letters, 51 selfloop transitions, 8 changer transitions 2/72 dead transitions. [2022-12-13 11:50:02,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 72 transitions, 284 flow [2022-12-13 11:50:02,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:50:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 11:50:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2022-12-13 11:50:02,915 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7196969696969697 [2022-12-13 11:50:02,915 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 100 flow. Second operand 3 states and 95 transitions. [2022-12-13 11:50:02,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 72 transitions, 284 flow [2022-12-13 11:50:02,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:50:02,918 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 156 flow [2022-12-13 11:50:02,918 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2022-12-13 11:50:02,919 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -38 predicate places. [2022-12-13 11:50:02,920 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:50:02,920 INFO L89 Accepts]: Start accepts. Operand has 57 places, 50 transitions, 156 flow [2022-12-13 11:50:02,922 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:50:02,922 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:50:02,922 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 50 transitions, 156 flow [2022-12-13 11:50:02,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 50 transitions, 156 flow [2022-12-13 11:50:02,980 INFO L130 PetriNetUnfolder]: 241/841 cut-off events. [2022-12-13 11:50:02,981 INFO L131 PetriNetUnfolder]: For 82/95 co-relation queries the response was YES. [2022-12-13 11:50:02,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 841 events. 241/841 cut-off events. For 82/95 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6861 event pairs, 101 based on Foata normal form. 0/606 useless extension candidates. Maximal degree in co-relation 1429. Up to 263 conditions per place. [2022-12-13 11:50:02,992 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 56 places, 50 transitions, 156 flow [2022-12-13 11:50:02,992 INFO L226 LiptonReduction]: Number of co-enabled transitions 1354 [2022-12-13 11:50:03,051 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:50:03,052 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 132 [2022-12-13 11:50:03,053 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 156 flow [2022-12-13 11:50:03,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:03,054 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:50:03,054 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:03,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:50:03,057 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:50:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:03,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2105877137, now seen corresponding path program 1 times [2022-12-13 11:50:03,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:03,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552093671] [2022-12-13 11:50:03,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:03,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:50:03,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:03,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552093671] [2022-12-13 11:50:03,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552093671] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:03,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:03,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:50:03,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121585018] [2022-12-13 11:50:03,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:03,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:50:03,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:03,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:50:03,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:50:03,281 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 11:50:03,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:03,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:50:03,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 11:50:03,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:50:06,610 INFO L130 PetriNetUnfolder]: 35023/49589 cut-off events. [2022-12-13 11:50:06,610 INFO L131 PetriNetUnfolder]: For 16729/16729 co-relation queries the response was YES. [2022-12-13 11:50:06,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117005 conditions, 49589 events. 35023/49589 cut-off events. For 16729/16729 co-relation queries the response was YES. Maximal size of possible extension queue 1724. Compared 318279 event pairs, 2471 based on Foata normal form. 60/41755 useless extension candidates. Maximal degree in co-relation 116993. Up to 26293 conditions per place. [2022-12-13 11:50:06,882 INFO L137 encePairwiseOnDemand]: 34/43 looper letters, 66 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2022-12-13 11:50:06,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 89 transitions, 422 flow [2022-12-13 11:50:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:50:06,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:50:06,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2022-12-13 11:50:06,884 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6918604651162791 [2022-12-13 11:50:06,884 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 156 flow. Second operand 4 states and 119 transitions. [2022-12-13 11:50:06,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 89 transitions, 422 flow [2022-12-13 11:50:06,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 89 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 11:50:06,973 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 228 flow [2022-12-13 11:50:06,974 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2022-12-13 11:50:06,974 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -35 predicate places. [2022-12-13 11:50:06,974 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:50:06,975 INFO L89 Accepts]: Start accepts. Operand has 60 places, 57 transitions, 228 flow [2022-12-13 11:50:06,975 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:50:06,975 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:50:06,976 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 60 places, 57 transitions, 228 flow [2022-12-13 11:50:06,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 57 transitions, 228 flow [2022-12-13 11:50:07,018 INFO L130 PetriNetUnfolder]: 223/771 cut-off events. [2022-12-13 11:50:07,018 INFO L131 PetriNetUnfolder]: For 414/489 co-relation queries the response was YES. [2022-12-13 11:50:07,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1584 conditions, 771 events. 223/771 cut-off events. For 414/489 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6136 event pairs, 75 based on Foata normal form. 1/564 useless extension candidates. Maximal degree in co-relation 1572. Up to 247 conditions per place. [2022-12-13 11:50:07,026 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 60 places, 57 transitions, 228 flow [2022-12-13 11:50:07,026 INFO L226 LiptonReduction]: Number of co-enabled transitions 1540 [2022-12-13 11:50:07,043 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:50:07,044 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 70 [2022-12-13 11:50:07,044 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 228 flow [2022-12-13 11:50:07,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:07,045 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:50:07,045 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:07,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:50:07,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:50:07,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:07,045 INFO L85 PathProgramCache]: Analyzing trace with hash -2105876858, now seen corresponding path program 1 times [2022-12-13 11:50:07,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:07,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946351896] [2022-12-13 11:50:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:07,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:07,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:50:07,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:07,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946351896] [2022-12-13 11:50:07,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946351896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:07,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:07,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:50:07,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651133901] [2022-12-13 11:50:07,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:07,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:50:07,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:07,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:50:07,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:50:07,165 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 11:50:07,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:07,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:50:07,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 11:50:07,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:50:10,372 INFO L130 PetriNetUnfolder]: 33205/46751 cut-off events. [2022-12-13 11:50:10,373 INFO L131 PetriNetUnfolder]: For 34569/34569 co-relation queries the response was YES. [2022-12-13 11:50:10,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118202 conditions, 46751 events. 33205/46751 cut-off events. For 34569/34569 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 289828 event pairs, 7785 based on Foata normal form. 336/39535 useless extension candidates. Maximal degree in co-relation 118187. Up to 19329 conditions per place. [2022-12-13 11:50:10,605 INFO L137 encePairwiseOnDemand]: 35/43 looper letters, 75 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2022-12-13 11:50:10,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 502 flow [2022-12-13 11:50:10,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:50:10,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:50:10,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2022-12-13 11:50:10,606 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6686046511627907 [2022-12-13 11:50:10,606 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 228 flow. Second operand 4 states and 115 transitions. [2022-12-13 11:50:10,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 502 flow [2022-12-13 11:50:10,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 94 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:50:10,714 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 302 flow [2022-12-13 11:50:10,714 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2022-12-13 11:50:10,715 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -29 predicate places. [2022-12-13 11:50:10,715 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:50:10,715 INFO L89 Accepts]: Start accepts. Operand has 66 places, 61 transitions, 302 flow [2022-12-13 11:50:10,716 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:50:10,716 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:50:10,716 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 61 transitions, 302 flow [2022-12-13 11:50:10,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 302 flow [2022-12-13 11:50:10,763 INFO L130 PetriNetUnfolder]: 170/607 cut-off events. [2022-12-13 11:50:10,763 INFO L131 PetriNetUnfolder]: For 842/881 co-relation queries the response was YES. [2022-12-13 11:50:10,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 607 events. 170/607 cut-off events. For 842/881 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4451 event pairs, 50 based on Foata normal form. 1/445 useless extension candidates. Maximal degree in co-relation 1511. Up to 187 conditions per place. [2022-12-13 11:50:10,772 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 61 transitions, 302 flow [2022-12-13 11:50:10,772 INFO L226 LiptonReduction]: Number of co-enabled transitions 1654 [2022-12-13 11:50:10,776 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:50:10,777 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 62 [2022-12-13 11:50:10,777 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 302 flow [2022-12-13 11:50:10,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:10,777 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:50:10,777 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:10,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:50:10,778 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:50:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:10,778 INFO L85 PathProgramCache]: Analyzing trace with hash -856811669, now seen corresponding path program 1 times [2022-12-13 11:50:10,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:10,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809863002] [2022-12-13 11:50:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:10,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:10,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:50:10,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:10,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809863002] [2022-12-13 11:50:10,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809863002] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:10,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:10,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:50:10,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022855573] [2022-12-13 11:50:10,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:10,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:50:10,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:50:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:50:10,904 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 11:50:10,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 302 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:10,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:50:10,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 11:50:10,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:50:14,187 INFO L130 PetriNetUnfolder]: 32783/46233 cut-off events. [2022-12-13 11:50:14,187 INFO L131 PetriNetUnfolder]: For 65831/65831 co-relation queries the response was YES. [2022-12-13 11:50:14,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127387 conditions, 46233 events. 32783/46233 cut-off events. For 65831/65831 co-relation queries the response was YES. Maximal size of possible extension queue 1535. Compared 293285 event pairs, 6577 based on Foata normal form. 60/38799 useless extension candidates. Maximal degree in co-relation 127367. Up to 24639 conditions per place. [2022-12-13 11:50:14,407 INFO L137 encePairwiseOnDemand]: 34/43 looper letters, 78 selfloop transitions, 24 changer transitions 0/113 dead transitions. [2022-12-13 11:50:14,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 113 transitions, 728 flow [2022-12-13 11:50:14,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:50:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:50:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2022-12-13 11:50:14,408 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7325581395348837 [2022-12-13 11:50:14,408 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 302 flow. Second operand 4 states and 126 transitions. [2022-12-13 11:50:14,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 113 transitions, 728 flow [2022-12-13 11:50:14,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 113 transitions, 723 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 11:50:14,788 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 532 flow [2022-12-13 11:50:14,788 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=532, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2022-12-13 11:50:14,789 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -24 predicate places. [2022-12-13 11:50:14,789 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:50:14,789 INFO L89 Accepts]: Start accepts. Operand has 71 places, 74 transitions, 532 flow [2022-12-13 11:50:14,790 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:50:14,790 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:50:14,790 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 74 transitions, 532 flow [2022-12-13 11:50:14,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 74 transitions, 532 flow [2022-12-13 11:50:14,820 INFO L130 PetriNetUnfolder]: 152/565 cut-off events. [2022-12-13 11:50:14,820 INFO L131 PetriNetUnfolder]: For 1260/1340 co-relation queries the response was YES. [2022-12-13 11:50:14,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 565 events. 152/565 cut-off events. For 1260/1340 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4052 event pairs, 31 based on Foata normal form. 2/413 useless extension candidates. Maximal degree in co-relation 1702. Up to 171 conditions per place. [2022-12-13 11:50:14,826 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 74 transitions, 532 flow [2022-12-13 11:50:14,826 INFO L226 LiptonReduction]: Number of co-enabled transitions 1926 [2022-12-13 11:50:14,889 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:50:14,890 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 101 [2022-12-13 11:50:14,890 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 532 flow [2022-12-13 11:50:14,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:14,890 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:50:14,890 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:14,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:50:14,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:50:14,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:14,891 INFO L85 PathProgramCache]: Analyzing trace with hash -818382772, now seen corresponding path program 1 times [2022-12-13 11:50:14,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:14,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506282999] [2022-12-13 11:50:14,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:14,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:50:15,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:15,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506282999] [2022-12-13 11:50:15,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506282999] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:15,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:15,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:50:15,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115937646] [2022-12-13 11:50:15,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:15,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:50:15,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:15,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:50:15,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:50:15,079 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 11:50:15,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:15,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:50:15,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 11:50:15,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:50:20,609 INFO L130 PetriNetUnfolder]: 52954/74480 cut-off events. [2022-12-13 11:50:20,609 INFO L131 PetriNetUnfolder]: For 132394/138785 co-relation queries the response was YES. [2022-12-13 11:50:20,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195444 conditions, 74480 events. 52954/74480 cut-off events. For 132394/138785 co-relation queries the response was YES. Maximal size of possible extension queue 3097. Compared 513277 event pairs, 13677 based on Foata normal form. 5748/55489 useless extension candidates. Maximal degree in co-relation 195420. Up to 57676 conditions per place. [2022-12-13 11:50:21,017 INFO L137 encePairwiseOnDemand]: 28/43 looper letters, 128 selfloop transitions, 26 changer transitions 0/182 dead transitions. [2022-12-13 11:50:21,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 182 transitions, 1486 flow [2022-12-13 11:50:21,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:50:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 11:50:21,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2022-12-13 11:50:21,019 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7395348837209302 [2022-12-13 11:50:21,019 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 532 flow. Second operand 5 states and 159 transitions. [2022-12-13 11:50:21,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 182 transitions, 1486 flow [2022-12-13 11:50:21,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 182 transitions, 1486 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 11:50:21,121 INFO L231 Difference]: Finished difference. Result has 78 places, 99 transitions, 727 flow [2022-12-13 11:50:21,121 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=727, PETRI_PLACES=78, PETRI_TRANSITIONS=99} [2022-12-13 11:50:21,122 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -17 predicate places. [2022-12-13 11:50:21,122 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:50:21,122 INFO L89 Accepts]: Start accepts. Operand has 78 places, 99 transitions, 727 flow [2022-12-13 11:50:21,123 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:50:21,123 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:50:21,124 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 99 transitions, 727 flow [2022-12-13 11:50:21,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 99 transitions, 727 flow [2022-12-13 11:50:22,402 INFO L130 PetriNetUnfolder]: 12439/19538 cut-off events. [2022-12-13 11:50:22,402 INFO L131 PetriNetUnfolder]: For 13112/19326 co-relation queries the response was YES. [2022-12-13 11:50:22,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59434 conditions, 19538 events. 12439/19538 cut-off events. For 13112/19326 co-relation queries the response was YES. Maximal size of possible extension queue 3051. Compared 174489 event pairs, 6871 based on Foata normal form. 18/8669 useless extension candidates. Maximal degree in co-relation 59408. Up to 16268 conditions per place. [2022-12-13 11:50:22,579 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 99 transitions, 727 flow [2022-12-13 11:50:22,579 INFO L226 LiptonReduction]: Number of co-enabled transitions 3174 [2022-12-13 11:50:50,957 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:50:50,958 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 29836 [2022-12-13 11:50:50,958 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 98 transitions, 721 flow [2022-12-13 11:50:50,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:50,959 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:50:50,959 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:50,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:50:50,959 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:50:50,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:50,959 INFO L85 PathProgramCache]: Analyzing trace with hash 525499090, now seen corresponding path program 1 times [2022-12-13 11:50:50,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:50,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279827017] [2022-12-13 11:50:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:50,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:50:51,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:51,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279827017] [2022-12-13 11:50:51,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279827017] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:51,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:51,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:50:51,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662492036] [2022-12-13 11:50:51,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:51,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:50:51,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:51,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:50:51,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:50:51,106 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 11:50:51,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 98 transitions, 721 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:51,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:50:51,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 11:50:51,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:50:54,909 INFO L130 PetriNetUnfolder]: 36023/53233 cut-off events. [2022-12-13 11:50:54,909 INFO L131 PetriNetUnfolder]: For 103837/107385 co-relation queries the response was YES. [2022-12-13 11:50:55,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198049 conditions, 53233 events. 36023/53233 cut-off events. For 103837/107385 co-relation queries the response was YES. Maximal size of possible extension queue 2422. Compared 387972 event pairs, 4155 based on Foata normal form. 4871/40855 useless extension candidates. Maximal degree in co-relation 198020. Up to 32941 conditions per place. [2022-12-13 11:50:55,397 INFO L137 encePairwiseOnDemand]: 28/43 looper letters, 143 selfloop transitions, 38 changer transitions 0/209 dead transitions. [2022-12-13 11:50:55,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 209 transitions, 1877 flow [2022-12-13 11:50:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:50:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:50:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2022-12-13 11:50:55,399 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7558139534883721 [2022-12-13 11:50:55,399 INFO L175 Difference]: Start difference. First operand has 78 places, 98 transitions, 721 flow. Second operand 6 states and 195 transitions. [2022-12-13 11:50:55,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 209 transitions, 1877 flow [2022-12-13 11:50:57,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 209 transitions, 1862 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 11:50:57,221 INFO L231 Difference]: Finished difference. Result has 82 places, 111 transitions, 962 flow [2022-12-13 11:50:57,221 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=962, PETRI_PLACES=82, PETRI_TRANSITIONS=111} [2022-12-13 11:50:57,222 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -13 predicate places. [2022-12-13 11:50:57,222 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:50:57,222 INFO L89 Accepts]: Start accepts. Operand has 82 places, 111 transitions, 962 flow [2022-12-13 11:50:57,225 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:50:57,225 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:50:57,225 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 111 transitions, 962 flow [2022-12-13 11:50:57,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 111 transitions, 962 flow [2022-12-13 11:50:58,696 INFO L130 PetriNetUnfolder]: 9679/16108 cut-off events. [2022-12-13 11:50:58,696 INFO L131 PetriNetUnfolder]: For 22034/37063 co-relation queries the response was YES. [2022-12-13 11:50:58,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75316 conditions, 16108 events. 9679/16108 cut-off events. For 22034/37063 co-relation queries the response was YES. Maximal size of possible extension queue 2493. Compared 144169 event pairs, 2614 based on Foata normal form. 35/7519 useless extension candidates. Maximal degree in co-relation 75287. Up to 13486 conditions per place. [2022-12-13 11:50:58,855 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 111 transitions, 962 flow [2022-12-13 11:50:58,855 INFO L226 LiptonReduction]: Number of co-enabled transitions 3588 [2022-12-13 11:51:52,090 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:51:52,090 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 54868 [2022-12-13 11:51:52,091 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 110 transitions, 954 flow [2022-12-13 11:51:52,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:51:52,091 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:51:52,091 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] [2022-12-13 11:51:52,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:51:52,091 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:51:52,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:51:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash -556209151, now seen corresponding path program 1 times [2022-12-13 11:51:52,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:51:52,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683732720] [2022-12-13 11:51:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:51:52,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:51:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:51:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:51:52,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:51:52,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683732720] [2022-12-13 11:51:52,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683732720] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:51:52,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:51:52,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:51:52,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316410380] [2022-12-13 11:51:52,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:51:52,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:51:52,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:51:52,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:51:52,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:51:52,312 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 11:51:52,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 110 transitions, 954 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:51:52,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:51:52,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 11:51:52,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:51:57,155 INFO L130 PetriNetUnfolder]: 46305/68121 cut-off events. [2022-12-13 11:51:57,155 INFO L131 PetriNetUnfolder]: For 239819/252106 co-relation queries the response was YES. [2022-12-13 11:51:57,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328039 conditions, 68121 events. 46305/68121 cut-off events. For 239819/252106 co-relation queries the response was YES. Maximal size of possible extension queue 3034. Compared 501633 event pairs, 12213 based on Foata normal form. 2705/58931 useless extension candidates. Maximal degree in co-relation 328007. Up to 36690 conditions per place. [2022-12-13 11:51:57,666 INFO L137 encePairwiseOnDemand]: 34/43 looper letters, 127 selfloop transitions, 28 changer transitions 11/185 dead transitions. [2022-12-13 11:51:57,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 185 transitions, 1814 flow [2022-12-13 11:51:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:51:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 11:51:57,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2022-12-13 11:51:57,668 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7616279069767442 [2022-12-13 11:51:57,668 INFO L175 Difference]: Start difference. First operand has 82 places, 110 transitions, 954 flow. Second operand 4 states and 131 transitions. [2022-12-13 11:51:57,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 185 transitions, 1814 flow [2022-12-13 11:52:08,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 185 transitions, 1576 flow, removed 90 selfloop flow, removed 4 redundant places. [2022-12-13 11:52:08,763 INFO L231 Difference]: Finished difference. Result has 82 places, 102 transitions, 927 flow [2022-12-13 11:52:08,763 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=927, PETRI_PLACES=82, PETRI_TRANSITIONS=102} [2022-12-13 11:52:08,764 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -13 predicate places. [2022-12-13 11:52:08,764 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:52:08,764 INFO L89 Accepts]: Start accepts. Operand has 82 places, 102 transitions, 927 flow [2022-12-13 11:52:08,765 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:52:08,765 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:52:08,766 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 102 transitions, 927 flow [2022-12-13 11:52:08,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 102 transitions, 927 flow [2022-12-13 11:52:09,774 INFO L130 PetriNetUnfolder]: 12522/20067 cut-off events. [2022-12-13 11:52:09,775 INFO L131 PetriNetUnfolder]: For 20571/23357 co-relation queries the response was YES. [2022-12-13 11:52:09,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72527 conditions, 20067 events. 12522/20067 cut-off events. For 20571/23357 co-relation queries the response was YES. Maximal size of possible extension queue 2925. Compared 176272 event pairs, 4041 based on Foata normal form. 53/9535 useless extension candidates. Maximal degree in co-relation 72497. Up to 16687 conditions per place. [2022-12-13 11:52:09,990 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 102 transitions, 927 flow [2022-12-13 11:52:09,990 INFO L226 LiptonReduction]: Number of co-enabled transitions 3152 [2022-12-13 11:52:10,340 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 11:52:10,341 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1577 [2022-12-13 11:52:10,341 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 102 transitions, 927 flow [2022-12-13 11:52:10,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:52:10,341 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:52:10,341 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] [2022-12-13 11:52:10,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:52:10,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:52:10,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:52:10,342 INFO L85 PathProgramCache]: Analyzing trace with hash -643807025, now seen corresponding path program 1 times [2022-12-13 11:52:10,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:52:10,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009651415] [2022-12-13 11:52:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:52:10,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:52:10,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:52:10,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:52:10,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009651415] [2022-12-13 11:52:10,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009651415] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:52:10,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:52:10,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:52:10,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802407189] [2022-12-13 11:52:10,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:52:10,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:52:10,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:52:10,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:52:10,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:52:10,588 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 11:52:10,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 102 transitions, 927 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:52:10,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:52:10,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 11:52:10,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:52:14,487 INFO L130 PetriNetUnfolder]: 29466/46161 cut-off events. [2022-12-13 11:52:14,488 INFO L131 PetriNetUnfolder]: For 107128/109331 co-relation queries the response was YES. [2022-12-13 11:52:14,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185443 conditions, 46161 events. 29466/46161 cut-off events. For 107128/109331 co-relation queries the response was YES. Maximal size of possible extension queue 2211. Compared 367115 event pairs, 1549 based on Foata normal form. 4703/34915 useless extension candidates. Maximal degree in co-relation 185410. Up to 25210 conditions per place. [2022-12-13 11:52:14,722 INFO L137 encePairwiseOnDemand]: 28/43 looper letters, 134 selfloop transitions, 50 changer transitions 24/238 dead transitions. [2022-12-13 11:52:14,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 238 transitions, 2511 flow [2022-12-13 11:52:14,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:52:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:52:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2022-12-13 11:52:14,728 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.760797342192691 [2022-12-13 11:52:14,728 INFO L175 Difference]: Start difference. First operand has 82 places, 102 transitions, 927 flow. Second operand 7 states and 229 transitions. [2022-12-13 11:52:14,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 238 transitions, 2511 flow [2022-12-13 11:52:14,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 238 transitions, 2431 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 11:52:14,923 INFO L231 Difference]: Finished difference. Result has 90 places, 127 transitions, 1273 flow [2022-12-13 11:52:14,923 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1273, PETRI_PLACES=90, PETRI_TRANSITIONS=127} [2022-12-13 11:52:14,924 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -5 predicate places. [2022-12-13 11:52:14,924 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:52:14,924 INFO L89 Accepts]: Start accepts. Operand has 90 places, 127 transitions, 1273 flow [2022-12-13 11:52:14,925 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:52:14,925 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:52:14,926 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 127 transitions, 1273 flow [2022-12-13 11:52:14,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 127 transitions, 1273 flow [2022-12-13 11:52:16,151 INFO L130 PetriNetUnfolder]: 7977/14820 cut-off events. [2022-12-13 11:52:16,151 INFO L131 PetriNetUnfolder]: For 25568/29965 co-relation queries the response was YES. [2022-12-13 11:52:16,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73773 conditions, 14820 events. 7977/14820 cut-off events. For 25568/29965 co-relation queries the response was YES. Maximal size of possible extension queue 2121. Compared 145631 event pairs, 801 based on Foata normal form. 4/7143 useless extension candidates. Maximal degree in co-relation 73739. Up to 12664 conditions per place. [2022-12-13 11:52:16,584 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 127 transitions, 1273 flow [2022-12-13 11:52:16,585 INFO L226 LiptonReduction]: Number of co-enabled transitions 3736 [2022-12-13 11:52:51,816 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:52:51,817 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 36893 [2022-12-13 11:52:51,817 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 126 transitions, 1263 flow [2022-12-13 11:52:51,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:52:51,817 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:52:51,817 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, 1, 1, 1] [2022-12-13 11:52:51,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:52:51,817 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:52:51,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:52:51,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1554606566, now seen corresponding path program 1 times [2022-12-13 11:52:51,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:52:51,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205186078] [2022-12-13 11:52:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:52:51,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:52:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:52:53,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:52:53,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205186078] [2022-12-13 11:52:53,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205186078] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:52:53,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:52:53,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 11:52:53,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425853326] [2022-12-13 11:52:53,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:52:53,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:52:53,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:52:53,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:52:53,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:52:53,082 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2022-12-13 11:52:53,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 126 transitions, 1263 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:52:53,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:52:53,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2022-12-13 11:52:53,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:52:59,300 INFO L130 PetriNetUnfolder]: 41074/65136 cut-off events. [2022-12-13 11:52:59,301 INFO L131 PetriNetUnfolder]: For 187081/195275 co-relation queries the response was YES. [2022-12-13 11:52:59,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316603 conditions, 65136 events. 41074/65136 cut-off events. For 187081/195275 co-relation queries the response was YES. Maximal size of possible extension queue 3773. Compared 560351 event pairs, 3414 based on Foata normal form. 2052/53027 useless extension candidates. Maximal degree in co-relation 316566. Up to 40113 conditions per place. [2022-12-13 11:52:59,877 INFO L137 encePairwiseOnDemand]: 36/43 looper letters, 219 selfloop transitions, 12 changer transitions 22/299 dead transitions. [2022-12-13 11:52:59,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 299 transitions, 3221 flow [2022-12-13 11:52:59,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:52:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 11:52:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2022-12-13 11:52:59,879 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6976744186046512 [2022-12-13 11:52:59,879 INFO L175 Difference]: Start difference. First operand has 90 places, 126 transitions, 1263 flow. Second operand 7 states and 210 transitions. [2022-12-13 11:52:59,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 299 transitions, 3221 flow [2022-12-13 11:53:30,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 299 transitions, 2822 flow, removed 136 selfloop flow, removed 4 redundant places. [2022-12-13 11:53:30,096 INFO L231 Difference]: Finished difference. Result has 93 places, 125 transitions, 1122 flow [2022-12-13 11:53:30,096 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1122, PETRI_PLACES=93, PETRI_TRANSITIONS=125} [2022-12-13 11:53:30,097 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, -2 predicate places. [2022-12-13 11:53:30,097 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:53:30,097 INFO L89 Accepts]: Start accepts. Operand has 93 places, 125 transitions, 1122 flow [2022-12-13 11:53:30,099 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:53:30,099 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:53:30,099 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 93 places, 125 transitions, 1122 flow [2022-12-13 11:53:30,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 125 transitions, 1122 flow [2022-12-13 11:53:32,140 INFO L130 PetriNetUnfolder]: 18654/31927 cut-off events. [2022-12-13 11:53:32,141 INFO L131 PetriNetUnfolder]: For 45345/46936 co-relation queries the response was YES. [2022-12-13 11:53:32,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125615 conditions, 31927 events. 18654/31927 cut-off events. For 45345/46936 co-relation queries the response was YES. Maximal size of possible extension queue 3807. Compared 305643 event pairs, 1790 based on Foata normal form. 6/15588 useless extension candidates. Maximal degree in co-relation 125579. Up to 18793 conditions per place. [2022-12-13 11:53:32,473 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 93 places, 125 transitions, 1122 flow [2022-12-13 11:53:32,474 INFO L226 LiptonReduction]: Number of co-enabled transitions 3658 [2022-12-13 11:53:33,035 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:53:33,036 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2939 [2022-12-13 11:53:33,036 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 125 transitions, 1128 flow [2022-12-13 11:53:33,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:33,036 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:53:33,036 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, 1, 1, 1, 1] [2022-12-13 11:53:33,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:53:33,036 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:53:33,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:33,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1195525313, now seen corresponding path program 1 times [2022-12-13 11:53:33,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:53:33,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554712659] [2022-12-13 11:53:33,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:33,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:53:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:33,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:53:33,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554712659] [2022-12-13 11:53:33,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554712659] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:53:33,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:53:33,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:53:33,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858873774] [2022-12-13 11:53:33,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:53:33,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:53:33,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:53:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:53:33,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:53:33,204 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2022-12-13 11:53:33,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 125 transitions, 1128 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:33,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:53:33,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2022-12-13 11:53:33,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 11:53:44,719 INFO L130 PetriNetUnfolder]: 78489/120610 cut-off events. [2022-12-13 11:53:44,719 INFO L131 PetriNetUnfolder]: For 435588/442764 co-relation queries the response was YES. [2022-12-13 11:53:45,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545352 conditions, 120610 events. 78489/120610 cut-off events. For 435588/442764 co-relation queries the response was YES. Maximal size of possible extension queue 6602. Compared 1058644 event pairs, 7974 based on Foata normal form. 3947/99349 useless extension candidates. Maximal degree in co-relation 545313. Up to 49000 conditions per place. [2022-12-13 11:53:45,336 INFO L137 encePairwiseOnDemand]: 34/44 looper letters, 193 selfloop transitions, 45 changer transitions 62/323 dead transitions. [2022-12-13 11:53:45,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 323 transitions, 3236 flow [2022-12-13 11:53:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:53:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 11:53:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2022-12-13 11:53:45,338 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2022-12-13 11:53:45,338 INFO L175 Difference]: Start difference. First operand has 93 places, 125 transitions, 1128 flow. Second operand 6 states and 192 transitions. [2022-12-13 11:53:45,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 323 transitions, 3236 flow [2022-12-13 11:54:03,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 323 transitions, 3229 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 11:54:03,312 INFO L231 Difference]: Finished difference. Result has 100 places, 140 transitions, 1549 flow [2022-12-13 11:54:03,312 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1549, PETRI_PLACES=100, PETRI_TRANSITIONS=140} [2022-12-13 11:54:03,313 INFO L295 CegarLoopForPetriNet]: 95 programPoint places, 5 predicate places. [2022-12-13 11:54:03,313 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 11:54:03,313 INFO L89 Accepts]: Start accepts. Operand has 100 places, 140 transitions, 1549 flow [2022-12-13 11:54:03,314 INFO L95 Accepts]: Finished accepts. [2022-12-13 11:54:03,314 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 11:54:03,314 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 140 transitions, 1549 flow [2022-12-13 11:54:03,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 140 transitions, 1549 flow [2022-12-13 11:54:06,841 INFO L130 PetriNetUnfolder]: 28783/48534 cut-off events. [2022-12-13 11:54:06,841 INFO L131 PetriNetUnfolder]: For 69404/71288 co-relation queries the response was YES. [2022-12-13 11:54:07,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193025 conditions, 48534 events. 28783/48534 cut-off events. For 69404/71288 co-relation queries the response was YES. Maximal size of possible extension queue 6084. Compared 485776 event pairs, 2088 based on Foata normal form. 57/22932 useless extension candidates. Maximal degree in co-relation 192985. Up to 30052 conditions per place. [2022-12-13 11:54:07,342 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 140 transitions, 1549 flow [2022-12-13 11:54:07,343 INFO L226 LiptonReduction]: Number of co-enabled transitions 4086 [2022-12-13 11:54:07,426 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [400] L824-->L840: Formula: (let ((.cse7 (= (mod v_~a$r_buff1_thd4~0_64 256) 0)) (.cse8 (= (mod v_~a$r_buff0_thd4~0_64 256) 0))) (let ((.cse9 (not .cse8)) (.cse2 (and .cse7 .cse8)) (.cse12 (= (mod v_~a$w_buff0_used~0_150 256) 0)) (.cse4 (and .cse8 (= (mod v_~a$w_buff1_used~0_139 256) 0)))) (let ((.cse10 (or .cse2 .cse12 .cse4)) (.cse11 (and (not .cse12) .cse9))) (let ((.cse5 (= (mod v_~a$w_buff1_used~0_138 256) 0)) (.cse3 (= (mod v_~a$w_buff0_used~0_149 256) 0)) (.cse1 (not (= (mod v_~weak$$choice2~0_30 256) 0))) (.cse0 (ite .cse10 v_~a~0_109 (ite .cse11 v_~a$w_buff0~0_69 v_~a$w_buff1~0_60)))) (and (= .cse0 v_~__unbuffered_p3_EBX~0_14) (= v_~weak$$choice2~0_30 |v_P3Thread1of1ForFork0_#t~nondet4_1|) (= (ite .cse1 v_~a$w_buff1_used~0_139 (ite (or .cse2 .cse3 .cse4) v_~a$w_buff1_used~0_139 0)) v_~a$w_buff1_used~0_138) (= v_~a~0_109 v_~a$mem_tmp~0_26) (= v_~weak$$choice0~0_5 |v_P3Thread1of1ForFork0_#t~nondet3_1|) (= v_~a$flush_delayed~0_29 0) (= v_~a$w_buff1~0_60 v_~a$w_buff1~0_59) (= (ite .cse1 v_~a$r_buff1_thd4~0_64 (ite (let ((.cse6 (= (mod v_~a$r_buff0_thd4~0_63 256) 0))) (or (and .cse5 .cse6) (and .cse7 .cse6) .cse3)) v_~a$r_buff1_thd4~0_64 0)) v_~a$r_buff1_thd4~0_63) (= v_~a$r_buff0_thd4~0_63 (ite .cse1 v_~a$r_buff0_thd4~0_64 (ite (or .cse2 (and .cse5 .cse8) .cse3) v_~a$r_buff0_thd4~0_64 (ite (and .cse9 (not .cse3)) 0 v_~a$r_buff0_thd4~0_64)))) (= (ite .cse1 v_~a$w_buff0_used~0_150 (ite .cse10 v_~a$w_buff0_used~0_150 (ite .cse11 0 v_~a$w_buff0_used~0_150))) v_~a$w_buff0_used~0_149) (= v_~a~0_108 (ite .cse1 v_~a$mem_tmp~0_26 .cse0)) (= v_~a$w_buff0~0_69 v_~a$w_buff0~0_68)))))) InVars {~a~0=v_~a~0_109, ~a$w_buff1~0=v_~a$w_buff1~0_60, ~a$w_buff0~0=v_~a$w_buff0~0_69, ~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_64, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_150, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_139, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_64, P3Thread1of1ForFork0_#t~nondet3=|v_P3Thread1of1ForFork0_#t~nondet3_1|, P3Thread1of1ForFork0_#t~nondet4=|v_P3Thread1of1ForFork0_#t~nondet4_1|} OutVars{~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_63, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_149, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_14, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_63, ~a~0=v_~a~0_108, ~a$mem_tmp~0=v_~a$mem_tmp~0_26, ~weak$$choice0~0=v_~weak$$choice0~0_5, ~a$w_buff1~0=v_~a$w_buff1~0_59, ~a$flush_delayed~0=v_~a$flush_delayed~0_29, ~a$w_buff0~0=v_~a$w_buff0~0_68, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_138, ~weak$$choice2~0=v_~weak$$choice2~0_30} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0, P3Thread1of1ForFork0_#t~nondet3, P3Thread1of1ForFork0_#t~nondet4] and [393] L804-->L811: Formula: (let ((.cse2 (not (= (mod v_~a$w_buff0_used~0_83 256) 0))) (.cse1 (not (= 0 (mod v_~a$r_buff1_thd3~0_16 256)))) (.cse5 (not (= (mod v_~a$r_buff0_thd3~0_20 256) 0)))) (let ((.cse0 (and (not (= (mod v_~a$w_buff0_used~0_84 256) 0)) .cse5)) (.cse3 (and (not (= (mod v_~a$w_buff1_used~0_75 256) 0)) .cse1)) (.cse4 (and .cse2 .cse5))) (and (= v_~a$w_buff0_used~0_83 (ite .cse0 0 v_~a$w_buff0_used~0_84)) (= v_~a$r_buff1_thd3~0_15 (ite (or (and .cse1 (not (= (mod v_~a$w_buff1_used~0_74 256) 0))) (and (not (= (mod v_~a$r_buff0_thd3~0_19 256) 0)) .cse2)) 0 v_~a$r_buff1_thd3~0_16)) (= v_~a~0_46 (ite .cse0 v_~a$w_buff0~0_30 (ite .cse3 v_~a$w_buff1~0_25 v_~a~0_47))) (= v_~a$r_buff0_thd3~0_19 (ite .cse4 0 v_~a$r_buff0_thd3~0_20)) (= (ite (or .cse3 .cse4) 0 v_~a$w_buff1_used~0_75) v_~a$w_buff1_used~0_74)))) InVars {~a~0=v_~a~0_47, ~a$w_buff1~0=v_~a$w_buff1~0_25, ~a$w_buff0~0=v_~a$w_buff0~0_30, ~a$r_buff1_thd3~0=v_~a$r_buff1_thd3~0_16, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_84, ~a$r_buff0_thd3~0=v_~a$r_buff0_thd3~0_20, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_75} OutVars{~a~0=v_~a~0_46, ~a$w_buff1~0=v_~a$w_buff1~0_25, ~a$w_buff0~0=v_~a$w_buff0~0_30, ~a$r_buff1_thd3~0=v_~a$r_buff1_thd3~0_15, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_83, ~a$r_buff0_thd3~0=v_~a$r_buff0_thd3~0_19, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_74} AuxVars[] AssignedVars[~a~0, ~a$r_buff1_thd3~0, ~a$w_buff0_used~0, ~a$r_buff0_thd3~0, ~a$w_buff1_used~0] [2022-12-13 11:54:07,708 ERROR L112 fgCompositionFactory]: Composing non-subsequent actions: [400] L824-->L840: Formula: (let ((.cse7 (= (mod v_~a$r_buff1_thd4~0_64 256) 0)) (.cse8 (= (mod v_~a$r_buff0_thd4~0_64 256) 0))) (let ((.cse9 (not .cse8)) (.cse2 (and .cse7 .cse8)) (.cse12 (= (mod v_~a$w_buff0_used~0_150 256) 0)) (.cse4 (and .cse8 (= (mod v_~a$w_buff1_used~0_139 256) 0)))) (let ((.cse10 (or .cse2 .cse12 .cse4)) (.cse11 (and (not .cse12) .cse9))) (let ((.cse5 (= (mod v_~a$w_buff1_used~0_138 256) 0)) (.cse3 (= (mod v_~a$w_buff0_used~0_149 256) 0)) (.cse1 (not (= (mod v_~weak$$choice2~0_30 256) 0))) (.cse0 (ite .cse10 v_~a~0_109 (ite .cse11 v_~a$w_buff0~0_69 v_~a$w_buff1~0_60)))) (and (= .cse0 v_~__unbuffered_p3_EBX~0_14) (= v_~weak$$choice2~0_30 |v_P3Thread1of1ForFork0_#t~nondet4_1|) (= (ite .cse1 v_~a$w_buff1_used~0_139 (ite (or .cse2 .cse3 .cse4) v_~a$w_buff1_used~0_139 0)) v_~a$w_buff1_used~0_138) (= v_~a~0_109 v_~a$mem_tmp~0_26) (= v_~weak$$choice0~0_5 |v_P3Thread1of1ForFork0_#t~nondet3_1|) (= v_~a$flush_delayed~0_29 0) (= v_~a$w_buff1~0_60 v_~a$w_buff1~0_59) (= (ite .cse1 v_~a$r_buff1_thd4~0_64 (ite (let ((.cse6 (= (mod v_~a$r_buff0_thd4~0_63 256) 0))) (or (and .cse5 .cse6) (and .cse7 .cse6) .cse3)) v_~a$r_buff1_thd4~0_64 0)) v_~a$r_buff1_thd4~0_63) (= v_~a$r_buff0_thd4~0_63 (ite .cse1 v_~a$r_buff0_thd4~0_64 (ite (or .cse2 (and .cse5 .cse8) .cse3) v_~a$r_buff0_thd4~0_64 (ite (and .cse9 (not .cse3)) 0 v_~a$r_buff0_thd4~0_64)))) (= (ite .cse1 v_~a$w_buff0_used~0_150 (ite .cse10 v_~a$w_buff0_used~0_150 (ite .cse11 0 v_~a$w_buff0_used~0_150))) v_~a$w_buff0_used~0_149) (= v_~a~0_108 (ite .cse1 v_~a$mem_tmp~0_26 .cse0)) (= v_~a$w_buff0~0_69 v_~a$w_buff0~0_68)))))) InVars {~a~0=v_~a~0_109, ~a$w_buff1~0=v_~a$w_buff1~0_60, ~a$w_buff0~0=v_~a$w_buff0~0_69, ~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_64, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_150, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_139, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_64, P3Thread1of1ForFork0_#t~nondet3=|v_P3Thread1of1ForFork0_#t~nondet3_1|, P3Thread1of1ForFork0_#t~nondet4=|v_P3Thread1of1ForFork0_#t~nondet4_1|} OutVars{~a$r_buff1_thd4~0=v_~a$r_buff1_thd4~0_63, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_149, ~__unbuffered_p3_EBX~0=v_~__unbuffered_p3_EBX~0_14, ~a$r_buff0_thd4~0=v_~a$r_buff0_thd4~0_63, ~a~0=v_~a~0_108, ~a$mem_tmp~0=v_~a$mem_tmp~0_26, ~weak$$choice0~0=v_~weak$$choice0~0_5, ~a$w_buff1~0=v_~a$w_buff1~0_59, ~a$flush_delayed~0=v_~a$flush_delayed~0_29, ~a$w_buff0~0=v_~a$w_buff0~0_68, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_138, ~weak$$choice2~0=v_~weak$$choice2~0_30} AuxVars[] AssignedVars[~a$r_buff1_thd4~0, ~a$w_buff0_used~0, ~__unbuffered_p3_EBX~0, ~a$r_buff0_thd4~0, ~a~0, ~a$mem_tmp~0, ~weak$$choice0~0, ~a$w_buff1~0, ~a$flush_delayed~0, ~a$w_buff0~0, ~a$w_buff1_used~0, ~weak$$choice2~0, P3Thread1of1ForFork0_#t~nondet3, P3Thread1of1ForFork0_#t~nondet4] and [393] L804-->L811: Formula: (let ((.cse2 (not (= (mod v_~a$w_buff0_used~0_83 256) 0))) (.cse1 (not (= 0 (mod v_~a$r_buff1_thd3~0_16 256)))) (.cse5 (not (= (mod v_~a$r_buff0_thd3~0_20 256) 0)))) (let ((.cse0 (and (not (= (mod v_~a$w_buff0_used~0_84 256) 0)) .cse5)) (.cse3 (and (not (= (mod v_~a$w_buff1_used~0_75 256) 0)) .cse1)) (.cse4 (and .cse2 .cse5))) (and (= v_~a$w_buff0_used~0_83 (ite .cse0 0 v_~a$w_buff0_used~0_84)) (= v_~a$r_buff1_thd3~0_15 (ite (or (and .cse1 (not (= (mod v_~a$w_buff1_used~0_74 256) 0))) (and (not (= (mod v_~a$r_buff0_thd3~0_19 256) 0)) .cse2)) 0 v_~a$r_buff1_thd3~0_16)) (= v_~a~0_46 (ite .cse0 v_~a$w_buff0~0_30 (ite .cse3 v_~a$w_buff1~0_25 v_~a~0_47))) (= v_~a$r_buff0_thd3~0_19 (ite .cse4 0 v_~a$r_buff0_thd3~0_20)) (= (ite (or .cse3 .cse4) 0 v_~a$w_buff1_used~0_75) v_~a$w_buff1_used~0_74)))) InVars {~a~0=v_~a~0_47, ~a$w_buff1~0=v_~a$w_buff1~0_25, ~a$w_buff0~0=v_~a$w_buff0~0_30, ~a$r_buff1_thd3~0=v_~a$r_buff1_thd3~0_16, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_84, ~a$r_buff0_thd3~0=v_~a$r_buff0_thd3~0_20, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_75} OutVars{~a~0=v_~a~0_46, ~a$w_buff1~0=v_~a$w_buff1~0_25, ~a$w_buff0~0=v_~a$w_buff0~0_30, ~a$r_buff1_thd3~0=v_~a$r_buff1_thd3~0_15, ~a$w_buff0_used~0=v_~a$w_buff0_used~0_83, ~a$r_buff0_thd3~0=v_~a$r_buff0_thd3~0_19, ~a$w_buff1_used~0=v_~a$w_buff1_used~0_74} AuxVars[] AssignedVars[~a~0, ~a$r_buff1_thd3~0, ~a$w_buff0_used~0, ~a$r_buff0_thd3~0, ~a$w_buff1_used~0] [2022-12-13 11:54:08,719 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 11:54:08,720 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 5407 [2022-12-13 11:54:08,720 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 140 transitions, 1555 flow [2022-12-13 11:54:08,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:08,721 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 11:54:08,721 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, 1, 1, 1] [2022-12-13 11:54:08,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:54:08,721 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-13 11:54:08,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:54:08,721 INFO L85 PathProgramCache]: Analyzing trace with hash -36654822, now seen corresponding path program 1 times [2022-12-13 11:54:08,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:54:08,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793198272] [2022-12-13 11:54:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:54:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:54:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:54:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:54:08,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:54:08,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793198272] [2022-12-13 11:54:08,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793198272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:54:08,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:54:08,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 11:54:08,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692766332] [2022-12-13 11:54:08,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:54:08,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:54:08,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:54:08,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:54:08,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:54:08,954 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2022-12-13 11:54:08,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 140 transitions, 1555 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:54:08,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 11:54:08,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2022-12-13 11:54:08,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand