/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 00:45:55,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 00:45:55,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 00:45:55,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 00:45:55,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 00:45:55,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 00:45:55,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 00:45:55,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 00:45:55,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 00:45:55,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 00:45:55,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 00:45:55,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 00:45:55,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 00:45:55,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 00:45:55,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 00:45:55,140 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 00:45:55,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 00:45:55,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 00:45:55,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 00:45:55,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 00:45:55,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 00:45:55,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 00:45:55,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 00:45:55,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 00:45:55,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 00:45:55,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 00:45:55,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 00:45:55,164 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 00:45:55,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 00:45:55,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 00:45:55,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 00:45:55,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 00:45:55,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 00:45:55,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 00:45:55,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 00:45:55,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 00:45:55,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 00:45:55,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 00:45:55,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 00:45:55,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 00:45:55,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 00:45:55,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2022-12-13 00:45:55,209 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 00:45:55,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 00:45:55,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 00:45:55,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 00:45:55,211 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 00:45:55,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 00:45:55,211 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 00:45:55,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 00:45:55,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 00:45:55,212 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 00:45:55,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 00:45:55,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 00:45:55,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 00:45:55,212 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 00:45:55,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 00:45:55,213 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 00:45:55,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 00:45:55,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 00:45:55,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 00:45:55,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 00:45:55,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 00:45:55,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 00:45:55,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 00:45:55,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 00:45:55,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 00:45:55,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 00:45:55,214 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 00:45:55,214 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 00:45:55,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 00:45:55,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 00:45:55,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 00:45:55,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 00:45:55,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 00:45:55,489 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 00:45:55,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 00:45:56,491 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 00:45:56,711 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 00:45:56,712 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix057_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 00:45:56,722 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b30c59fe/210a72fd815f439ea2b2093c263426fe/FLAG15855795a [2022-12-13 00:45:56,734 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b30c59fe/210a72fd815f439ea2b2093c263426fe [2022-12-13 00:45:56,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 00:45:56,736 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 00:45:56,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 00:45:56,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 00:45:56,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 00:45:56,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:45:56" (1/1) ... [2022-12-13 00:45:56,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da8a441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:56, skipping insertion in model container [2022-12-13 00:45:56,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:45:56" (1/1) ... [2022-12-13 00:45:56,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 00:45:56,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 00:45:56,904 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/mix057_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 00:45:57,039 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,041 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,042 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,047 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,048 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,054 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,055 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,057 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,063 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 00:45:57,097 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 00:45:57,106 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/mix057_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-12-13 00:45:57,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,131 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,134 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,146 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,151 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,152 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,155 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,156 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,158 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 00:45:57,160 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 00:45:57,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 00:45:57,193 INFO L208 MainTranslator]: Completed translation [2022-12-13 00:45:57,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57 WrapperNode [2022-12-13 00:45:57,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 00:45:57,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 00:45:57,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 00:45:57,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 00:45:57,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57" (1/1) ... [2022-12-13 00:45:57,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57" (1/1) ... [2022-12-13 00:45:57,242 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 142 [2022-12-13 00:45:57,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 00:45:57,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 00:45:57,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 00:45:57,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 00:45:57,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57" (1/1) ... [2022-12-13 00:45:57,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57" (1/1) ... [2022-12-13 00:45:57,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57" (1/1) ... [2022-12-13 00:45:57,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57" (1/1) ... [2022-12-13 00:45:57,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57" (1/1) ... [2022-12-13 00:45:57,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57" (1/1) ... [2022-12-13 00:45:57,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57" (1/1) ... [2022-12-13 00:45:57,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57" (1/1) ... [2022-12-13 00:45:57,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 00:45:57,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 00:45:57,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 00:45:57,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 00:45:57,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57" (1/1) ... [2022-12-13 00:45:57,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 00:45:57,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 00:45:57,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 00:45:57,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 00:45:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 00:45:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 00:45:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 00:45:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 00:45:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 00:45:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 00:45:57,361 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 00:45:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 00:45:57,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 00:45:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 00:45:57,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 00:45:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-12-13 00:45:57,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-12-13 00:45:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 00:45:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 00:45:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 00:45:57,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 00:45:57,364 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 00:45:57,462 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 00:45:57,463 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 00:45:57,810 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 00:45:57,894 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 00:45:57,894 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 00:45:57,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:45:57 BoogieIcfgContainer [2022-12-13 00:45:57,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 00:45:57,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 00:45:57,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 00:45:57,904 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 00:45:57,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:45:56" (1/3) ... [2022-12-13 00:45:57,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e57f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:45:57, skipping insertion in model container [2022-12-13 00:45:57,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:45:57" (2/3) ... [2022-12-13 00:45:57,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e57f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:45:57, skipping insertion in model container [2022-12-13 00:45:57,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:45:57" (3/3) ... [2022-12-13 00:45:57,906 INFO L112 eAbstractionObserver]: Analyzing ICFG mix057_power.oepc_pso.oepc_rmo.oepc.i [2022-12-13 00:45:57,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 00:45:57,920 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 00:45:57,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 00:45:57,967 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 00:45:57,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 127 transitions, 274 flow [2022-12-13 00:45:58,053 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2022-12-13 00:45:58,054 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:45:58,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 00:45:58,059 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 127 transitions, 274 flow [2022-12-13 00:45:58,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 123 transitions, 258 flow [2022-12-13 00:45:58,066 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:45:58,090 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 123 transitions, 258 flow [2022-12-13 00:45:58,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 123 transitions, 258 flow [2022-12-13 00:45:58,131 INFO L130 PetriNetUnfolder]: 2/123 cut-off events. [2022-12-13 00:45:58,132 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:45:58,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 123 events. 2/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 67 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-12-13 00:45:58,136 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 123 transitions, 258 flow [2022-12-13 00:45:58,137 INFO L226 LiptonReduction]: Number of co-enabled transitions 3058 [2022-12-13 00:46:02,760 INFO L241 LiptonReduction]: Total number of compositions: 96 [2022-12-13 00:46:02,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 00:46:02,789 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;@3dccda0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 00:46:02,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-12-13 00:46:02,792 INFO L130 PetriNetUnfolder]: 0/4 cut-off events. [2022-12-13 00:46:02,792 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:46:02,793 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:02,793 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 00:46:02,794 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 00:46:02,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash 561802, now seen corresponding path program 1 times [2022-12-13 00:46:02,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:02,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622917945] [2022-12-13 00:46:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:02,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 00:46:03,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:03,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622917945] [2022-12-13 00:46:03,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622917945] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:03,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:03,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 00:46:03,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190556480] [2022-12-13 00:46:03,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:03,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:46:03,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:03,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:46:03,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:46:03,121 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 81 [2022-12-13 00:46:03,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:03,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:03,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 81 [2022-12-13 00:46:03,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:09,996 INFO L130 PetriNetUnfolder]: 66790/94452 cut-off events. [2022-12-13 00:46:09,996 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-12-13 00:46:10,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182741 conditions, 94452 events. 66790/94452 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 4409. Compared 694568 event pairs, 26656 based on Foata normal form. 0/60521 useless extension candidates. Maximal degree in co-relation 182729. Up to 73765 conditions per place. [2022-12-13 00:46:10,339 INFO L137 encePairwiseOnDemand]: 77/81 looper letters, 48 selfloop transitions, 2 changer transitions 71/136 dead transitions. [2022-12-13 00:46:10,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 136 transitions, 533 flow [2022-12-13 00:46:10,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:46:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:46:10,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2022-12-13 00:46:10,347 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2022-12-13 00:46:10,348 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 174 flow. Second operand 3 states and 171 transitions. [2022-12-13 00:46:10,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 136 transitions, 533 flow [2022-12-13 00:46:10,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 136 transitions, 526 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 00:46:10,354 INFO L231 Difference]: Finished difference. Result has 90 places, 43 transitions, 98 flow [2022-12-13 00:46:10,356 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=90, PETRI_TRANSITIONS=43} [2022-12-13 00:46:10,360 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -4 predicate places. [2022-12-13 00:46:10,360 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:10,360 INFO L89 Accepts]: Start accepts. Operand has 90 places, 43 transitions, 98 flow [2022-12-13 00:46:10,364 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:10,364 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:10,364 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 43 transitions, 98 flow [2022-12-13 00:46:10,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 43 transitions, 98 flow [2022-12-13 00:46:10,382 INFO L130 PetriNetUnfolder]: 0/43 cut-off events. [2022-12-13 00:46:10,382 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 00:46:10,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 43 events. 0/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 119 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 00:46:10,386 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 54 places, 43 transitions, 98 flow [2022-12-13 00:46:10,386 INFO L226 LiptonReduction]: Number of co-enabled transitions 1106 [2022-12-13 00:46:10,666 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:46:10,669 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 309 [2022-12-13 00:46:10,669 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 98 flow [2022-12-13 00:46:10,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:10,670 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:10,670 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:10,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 00:46:10,673 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 00:46:10,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:10,673 INFO L85 PathProgramCache]: Analyzing trace with hash 195712061, now seen corresponding path program 1 times [2022-12-13 00:46:10,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:10,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589590164] [2022-12-13 00:46:10,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:10,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 00:46:10,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:10,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589590164] [2022-12-13 00:46:10,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589590164] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:10,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:10,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 00:46:10,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807856781] [2022-12-13 00:46:10,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:10,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:46:10,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:10,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:46:10,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:46:10,897 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 43 [2022-12-13 00:46:10,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 98 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 00:46:10,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:10,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 43 [2022-12-13 00:46:10,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:14,359 INFO L130 PetriNetUnfolder]: 37621/52263 cut-off events. [2022-12-13 00:46:14,359 INFO L131 PetriNetUnfolder]: For 2020/2020 co-relation queries the response was YES. [2022-12-13 00:46:14,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105174 conditions, 52263 events. 37621/52263 cut-off events. For 2020/2020 co-relation queries the response was YES. Maximal size of possible extension queue 1850. Compared 328183 event pairs, 14951 based on Foata normal form. 0/42653 useless extension candidates. Maximal degree in co-relation 105164. Up to 25250 conditions per place. [2022-12-13 00:46:14,610 INFO L137 encePairwiseOnDemand]: 34/43 looper letters, 49 selfloop transitions, 8 changer transitions 2/70 dead transitions. [2022-12-13 00:46:14,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 276 flow [2022-12-13 00:46:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:46:14,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:46:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2022-12-13 00:46:14,614 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7209302325581395 [2022-12-13 00:46:14,614 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 98 flow. Second operand 3 states and 93 transitions. [2022-12-13 00:46:14,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 276 flow [2022-12-13 00:46:14,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 00:46:14,617 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 154 flow [2022-12-13 00:46:14,617 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2022-12-13 00:46:14,618 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -38 predicate places. [2022-12-13 00:46:14,618 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:14,618 INFO L89 Accepts]: Start accepts. Operand has 56 places, 49 transitions, 154 flow [2022-12-13 00:46:14,619 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:14,619 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:14,619 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 56 places, 49 transitions, 154 flow [2022-12-13 00:46:14,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 49 transitions, 154 flow [2022-12-13 00:46:14,680 INFO L130 PetriNetUnfolder]: 284/953 cut-off events. [2022-12-13 00:46:14,680 INFO L131 PetriNetUnfolder]: For 91/104 co-relation queries the response was YES. [2022-12-13 00:46:14,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1647 conditions, 953 events. 284/953 cut-off events. For 91/104 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8009 event pairs, 114 based on Foata normal form. 0/691 useless extension candidates. Maximal degree in co-relation 1638. Up to 263 conditions per place. [2022-12-13 00:46:14,690 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 49 transitions, 154 flow [2022-12-13 00:46:14,690 INFO L226 LiptonReduction]: Number of co-enabled transitions 1306 [2022-12-13 00:46:14,729 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:46:14,730 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 112 [2022-12-13 00:46:14,731 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 154 flow [2022-12-13 00:46:14,731 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 00:46:14,731 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:14,731 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:14,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 00:46:14,732 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 00:46:14,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:14,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1772104124, now seen corresponding path program 1 times [2022-12-13 00:46:14,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:14,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890745355] [2022-12-13 00:46:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:14,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 00:46:14,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:14,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890745355] [2022-12-13 00:46:14,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890745355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:14,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:14,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:46:14,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562376730] [2022-12-13 00:46:14,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:14,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:46:14,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:14,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:46:14,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:46:14,915 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2022-12-13 00:46:14,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 154 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 00:46:14,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:14,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2022-12-13 00:46:14,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:17,654 INFO L130 PetriNetUnfolder]: 29276/41555 cut-off events. [2022-12-13 00:46:17,655 INFO L131 PetriNetUnfolder]: For 16035/16035 co-relation queries the response was YES. [2022-12-13 00:46:17,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99365 conditions, 41555 events. 29276/41555 cut-off events. For 16035/16035 co-relation queries the response was YES. Maximal size of possible extension queue 1553. Compared 264499 event pairs, 1942 based on Foata normal form. 42/34816 useless extension candidates. Maximal degree in co-relation 99353. Up to 18857 conditions per place. [2022-12-13 00:46:17,909 INFO L137 encePairwiseOnDemand]: 33/42 looper letters, 66 selfloop transitions, 12 changer transitions 0/89 dead transitions. [2022-12-13 00:46:17,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 89 transitions, 430 flow [2022-12-13 00:46:17,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:46:17,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:46:17,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2022-12-13 00:46:17,910 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2022-12-13 00:46:17,911 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 154 flow. Second operand 4 states and 117 transitions. [2022-12-13 00:46:17,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 89 transitions, 430 flow [2022-12-13 00:46:17,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 89 transitions, 402 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 00:46:17,934 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 232 flow [2022-12-13 00:46:17,935 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2022-12-13 00:46:17,935 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -35 predicate places. [2022-12-13 00:46:17,935 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:17,935 INFO L89 Accepts]: Start accepts. Operand has 59 places, 57 transitions, 232 flow [2022-12-13 00:46:17,936 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:17,936 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:17,936 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 232 flow [2022-12-13 00:46:17,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 232 flow [2022-12-13 00:46:18,116 INFO L130 PetriNetUnfolder]: 241/852 cut-off events. [2022-12-13 00:46:18,116 INFO L131 PetriNetUnfolder]: For 375/461 co-relation queries the response was YES. [2022-12-13 00:46:18,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1716 conditions, 852 events. 241/852 cut-off events. For 375/461 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7013 event pairs, 66 based on Foata normal form. 1/619 useless extension candidates. Maximal degree in co-relation 1704. Up to 227 conditions per place. [2022-12-13 00:46:18,123 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 57 transitions, 232 flow [2022-12-13 00:46:18,123 INFO L226 LiptonReduction]: Number of co-enabled transitions 1518 [2022-12-13 00:46:18,134 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:46:18,135 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 200 [2022-12-13 00:46:18,135 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 232 flow [2022-12-13 00:46:18,135 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 00:46:18,135 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:18,135 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:18,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 00:46:18,136 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 00:46:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:18,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1772104341, now seen corresponding path program 1 times [2022-12-13 00:46:18,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:18,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878280193] [2022-12-13 00:46:18,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:18,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 00:46:18,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:18,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878280193] [2022-12-13 00:46:18,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878280193] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:18,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:18,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:46:18,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875958628] [2022-12-13 00:46:18,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:18,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:46:18,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:18,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:46:18,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:46:18,250 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2022-12-13 00:46:18,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 232 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 00:46:18,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:18,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2022-12-13 00:46:18,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:21,158 INFO L130 PetriNetUnfolder]: 28854/40798 cut-off events. [2022-12-13 00:46:21,158 INFO L131 PetriNetUnfolder]: For 30679/30679 co-relation queries the response was YES. [2022-12-13 00:46:21,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105213 conditions, 40798 events. 28854/40798 cut-off events. For 30679/30679 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 258376 event pairs, 6101 based on Foata normal form. 60/34135 useless extension candidates. Maximal degree in co-relation 105198. Up to 19140 conditions per place. [2022-12-13 00:46:21,389 INFO L137 encePairwiseOnDemand]: 33/42 looper letters, 75 selfloop transitions, 20 changer transitions 0/106 dead transitions. [2022-12-13 00:46:21,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 106 transitions, 598 flow [2022-12-13 00:46:21,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:46:21,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:46:21,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2022-12-13 00:46:21,390 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7321428571428571 [2022-12-13 00:46:21,391 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 232 flow. Second operand 4 states and 123 transitions. [2022-12-13 00:46:21,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 106 transitions, 598 flow [2022-12-13 00:46:21,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 106 transitions, 598 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 00:46:21,425 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 412 flow [2022-12-13 00:46:21,425 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=412, PETRI_PLACES=65, PETRI_TRANSITIONS=69} [2022-12-13 00:46:21,427 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -29 predicate places. [2022-12-13 00:46:21,427 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:21,427 INFO L89 Accepts]: Start accepts. Operand has 65 places, 69 transitions, 412 flow [2022-12-13 00:46:21,428 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:21,428 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:21,428 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 69 transitions, 412 flow [2022-12-13 00:46:21,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 69 transitions, 412 flow [2022-12-13 00:46:21,475 INFO L130 PetriNetUnfolder]: 213/776 cut-off events. [2022-12-13 00:46:21,475 INFO L131 PetriNetUnfolder]: For 1128/1327 co-relation queries the response was YES. [2022-12-13 00:46:21,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 776 events. 213/776 cut-off events. For 1128/1327 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6278 event pairs, 23 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 1969. Up to 199 conditions per place. [2022-12-13 00:46:21,484 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 69 transitions, 412 flow [2022-12-13 00:46:21,484 INFO L226 LiptonReduction]: Number of co-enabled transitions 1792 [2022-12-13 00:46:21,495 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:46:21,499 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 72 [2022-12-13 00:46:21,499 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 412 flow [2022-12-13 00:46:21,499 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 00:46:21,500 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:21,500 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:21,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 00:46:21,500 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 00:46:21,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash -899349258, now seen corresponding path program 1 times [2022-12-13 00:46:21,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:21,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723917928] [2022-12-13 00:46:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:21,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 00:46:21,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:21,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723917928] [2022-12-13 00:46:21,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723917928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:21,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:21,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:46:21,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791717316] [2022-12-13 00:46:21,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:21,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:46:21,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:21,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:46:21,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:46:21,615 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2022-12-13 00:46:21,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 412 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 00:46:21,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:21,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2022-12-13 00:46:21,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:24,751 INFO L130 PetriNetUnfolder]: 28521/40327 cut-off events. [2022-12-13 00:46:24,751 INFO L131 PetriNetUnfolder]: For 69835/69835 co-relation queries the response was YES. [2022-12-13 00:46:24,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117515 conditions, 40327 events. 28521/40327 cut-off events. For 69835/69835 co-relation queries the response was YES. Maximal size of possible extension queue 1487. Compared 253808 event pairs, 3200 based on Foata normal form. 50/33701 useless extension candidates. Maximal degree in co-relation 117495. Up to 18996 conditions per place. [2022-12-13 00:46:25,010 INFO L137 encePairwiseOnDemand]: 33/42 looper letters, 78 selfloop transitions, 28 changer transitions 0/117 dead transitions. [2022-12-13 00:46:25,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 117 transitions, 856 flow [2022-12-13 00:46:25,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:46:25,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:46:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2022-12-13 00:46:25,012 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2022-12-13 00:46:25,012 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 412 flow. Second operand 4 states and 119 transitions. [2022-12-13 00:46:25,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 117 transitions, 856 flow [2022-12-13 00:46:25,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 117 transitions, 856 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 00:46:25,104 INFO L231 Difference]: Finished difference. Result has 71 places, 82 transitions, 676 flow [2022-12-13 00:46:25,105 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=676, PETRI_PLACES=71, PETRI_TRANSITIONS=82} [2022-12-13 00:46:25,107 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -23 predicate places. [2022-12-13 00:46:25,107 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:25,107 INFO L89 Accepts]: Start accepts. Operand has 71 places, 82 transitions, 676 flow [2022-12-13 00:46:25,108 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:25,108 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:25,108 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 71 places, 82 transitions, 676 flow [2022-12-13 00:46:25,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 82 transitions, 676 flow [2022-12-13 00:46:25,159 INFO L130 PetriNetUnfolder]: 190/691 cut-off events. [2022-12-13 00:46:25,159 INFO L131 PetriNetUnfolder]: For 2071/2285 co-relation queries the response was YES. [2022-12-13 00:46:25,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2191 conditions, 691 events. 190/691 cut-off events. For 2071/2285 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5364 event pairs, 17 based on Foata normal form. 1/509 useless extension candidates. Maximal degree in co-relation 2169. Up to 176 conditions per place. [2022-12-13 00:46:25,168 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 71 places, 82 transitions, 676 flow [2022-12-13 00:46:25,168 INFO L226 LiptonReduction]: Number of co-enabled transitions 2070 [2022-12-13 00:46:25,173 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:46:25,174 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 67 [2022-12-13 00:46:25,174 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 82 transitions, 676 flow [2022-12-13 00:46:25,174 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 00:46:25,174 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:25,175 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:25,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 00:46:25,175 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 00:46:25,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:25,175 INFO L85 PathProgramCache]: Analyzing trace with hash -2048195449, now seen corresponding path program 1 times [2022-12-13 00:46:25,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:25,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301771025] [2022-12-13 00:46:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:25,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:25,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 00:46:25,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:25,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301771025] [2022-12-13 00:46:25,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301771025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:25,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:25,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 00:46:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458701441] [2022-12-13 00:46:25,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:25,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:46:25,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:25,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:46:25,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:46:25,292 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2022-12-13 00:46:25,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 676 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:25,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:25,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2022-12-13 00:46:25,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:30,094 INFO L130 PetriNetUnfolder]: 41805/59212 cut-off events. [2022-12-13 00:46:30,094 INFO L131 PetriNetUnfolder]: For 178239/178239 co-relation queries the response was YES. [2022-12-13 00:46:30,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180614 conditions, 59212 events. 41805/59212 cut-off events. For 178239/178239 co-relation queries the response was YES. Maximal size of possible extension queue 2226. Compared 393293 event pairs, 11142 based on Foata normal form. 720/49188 useless extension candidates. Maximal degree in co-relation 180589. Up to 24572 conditions per place. [2022-12-13 00:46:30,438 INFO L137 encePairwiseOnDemand]: 33/42 looper letters, 79 selfloop transitions, 37 changer transitions 2/129 dead transitions. [2022-12-13 00:46:30,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 129 transitions, 1100 flow [2022-12-13 00:46:30,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 00:46:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 00:46:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2022-12-13 00:46:30,439 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-12-13 00:46:30,440 INFO L175 Difference]: Start difference. First operand has 71 places, 82 transitions, 676 flow. Second operand 4 states and 126 transitions. [2022-12-13 00:46:30,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 129 transitions, 1100 flow [2022-12-13 00:46:30,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 129 transitions, 1100 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 00:46:30,591 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 902 flow [2022-12-13 00:46:30,591 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=902, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2022-12-13 00:46:30,592 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -17 predicate places. [2022-12-13 00:46:30,592 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:30,592 INFO L89 Accepts]: Start accepts. Operand has 77 places, 86 transitions, 902 flow [2022-12-13 00:46:30,593 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:30,593 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:30,593 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 86 transitions, 902 flow [2022-12-13 00:46:30,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 86 transitions, 902 flow [2022-12-13 00:46:30,641 INFO L130 PetriNetUnfolder]: 184/786 cut-off events. [2022-12-13 00:46:30,641 INFO L131 PetriNetUnfolder]: For 3525/3930 co-relation queries the response was YES. [2022-12-13 00:46:30,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 786 events. 184/786 cut-off events. For 3525/3930 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6640 event pairs, 15 based on Foata normal form. 5/568 useless extension candidates. Maximal degree in co-relation 2729. Up to 176 conditions per place. [2022-12-13 00:46:30,650 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 86 transitions, 902 flow [2022-12-13 00:46:30,650 INFO L226 LiptonReduction]: Number of co-enabled transitions 2192 [2022-12-13 00:46:30,749 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:46:30,750 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 158 [2022-12-13 00:46:30,750 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 902 flow [2022-12-13 00:46:30,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:30,750 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:30,750 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:30,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 00:46:30,750 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 00:46:30,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:30,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2109961089, now seen corresponding path program 1 times [2022-12-13 00:46:30,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:30,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456766272] [2022-12-13 00:46:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:30,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 00:46:30,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:30,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456766272] [2022-12-13 00:46:30,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456766272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:30,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:30,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:46:30,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466375212] [2022-12-13 00:46:30,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:30,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:46:30,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:30,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:46:30,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:46:30,870 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2022-12-13 00:46:30,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 902 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 00:46:30,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:30,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2022-12-13 00:46:30,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:37,960 INFO L130 PetriNetUnfolder]: 61531/86406 cut-off events. [2022-12-13 00:46:37,960 INFO L131 PetriNetUnfolder]: For 297289/301044 co-relation queries the response was YES. [2022-12-13 00:46:38,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245426 conditions, 86406 events. 61531/86406 cut-off events. For 297289/301044 co-relation queries the response was YES. Maximal size of possible extension queue 3641. Compared 598219 event pairs, 19471 based on Foata normal form. 2052/59350 useless extension candidates. Maximal degree in co-relation 245396. Up to 83503 conditions per place. [2022-12-13 00:46:38,494 INFO L137 encePairwiseOnDemand]: 28/42 looper letters, 93 selfloop transitions, 13 changer transitions 0/135 dead transitions. [2022-12-13 00:46:38,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 135 transitions, 1570 flow [2022-12-13 00:46:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:46:38,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:46:38,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2022-12-13 00:46:38,495 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2022-12-13 00:46:38,495 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 902 flow. Second operand 3 states and 90 transitions. [2022-12-13 00:46:38,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 135 transitions, 1570 flow [2022-12-13 00:46:38,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 135 transitions, 1566 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 00:46:38,592 INFO L231 Difference]: Finished difference. Result has 80 places, 98 transitions, 989 flow [2022-12-13 00:46:38,592 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=989, PETRI_PLACES=80, PETRI_TRANSITIONS=98} [2022-12-13 00:46:38,593 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -14 predicate places. [2022-12-13 00:46:38,593 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:38,593 INFO L89 Accepts]: Start accepts. Operand has 80 places, 98 transitions, 989 flow [2022-12-13 00:46:38,594 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:38,594 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:38,594 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 98 transitions, 989 flow [2022-12-13 00:46:38,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 98 transitions, 989 flow [2022-12-13 00:46:39,954 INFO L130 PetriNetUnfolder]: 11475/20321 cut-off events. [2022-12-13 00:46:39,954 INFO L131 PetriNetUnfolder]: For 19338/20211 co-relation queries the response was YES. [2022-12-13 00:46:40,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45403 conditions, 20321 events. 11475/20321 cut-off events. For 19338/20211 co-relation queries the response was YES. Maximal size of possible extension queue 2605. Compared 206015 event pairs, 6412 based on Foata normal form. 26/10136 useless extension candidates. Maximal degree in co-relation 45373. Up to 16192 conditions per place. [2022-12-13 00:46:40,165 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 98 transitions, 989 flow [2022-12-13 00:46:40,165 INFO L226 LiptonReduction]: Number of co-enabled transitions 2810 [2022-12-13 00:46:40,536 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:46:40,537 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 1944 [2022-12-13 00:46:40,537 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 98 transitions, 989 flow [2022-12-13 00:46:40,537 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 00:46:40,537 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:40,537 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:40,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 00:46:40,538 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 00:46:40,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:40,538 INFO L85 PathProgramCache]: Analyzing trace with hash 517628412, now seen corresponding path program 1 times [2022-12-13 00:46:40,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:40,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956325884] [2022-12-13 00:46:40,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:40,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 00:46:40,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:40,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956325884] [2022-12-13 00:46:40,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956325884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:40,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:40,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 00:46:40,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922796734] [2022-12-13 00:46:40,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:40,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 00:46:40,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:40,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 00:46:40,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 00:46:40,620 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 42 [2022-12-13 00:46:40,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 98 transitions, 989 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 00:46:40,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:40,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 42 [2022-12-13 00:46:40,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 00:46:51,213 INFO L130 PetriNetUnfolder]: 88755/126902 cut-off events. [2022-12-13 00:46:51,214 INFO L131 PetriNetUnfolder]: For 366832/372449 co-relation queries the response was YES. [2022-12-13 00:46:51,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406829 conditions, 126902 events. 88755/126902 cut-off events. For 366832/372449 co-relation queries the response was YES. Maximal size of possible extension queue 6778. Compared 993204 event pairs, 31515 based on Foata normal form. 2642/99743 useless extension candidates. Maximal degree in co-relation 406796. Up to 79036 conditions per place. [2022-12-13 00:46:52,208 INFO L137 encePairwiseOnDemand]: 39/42 looper letters, 88 selfloop transitions, 11 changer transitions 0/129 dead transitions. [2022-12-13 00:46:52,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 129 transitions, 1357 flow [2022-12-13 00:46:52,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 00:46:52,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 00:46:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2022-12-13 00:46:52,210 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7063492063492064 [2022-12-13 00:46:52,210 INFO L175 Difference]: Start difference. First operand has 80 places, 98 transitions, 989 flow. Second operand 3 states and 89 transitions. [2022-12-13 00:46:52,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 129 transitions, 1357 flow [2022-12-13 00:46:52,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 129 transitions, 1336 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 00:46:52,491 INFO L231 Difference]: Finished difference. Result has 82 places, 98 transitions, 1011 flow [2022-12-13 00:46:52,492 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1011, PETRI_PLACES=82, PETRI_TRANSITIONS=98} [2022-12-13 00:46:52,492 INFO L295 CegarLoopForPetriNet]: 94 programPoint places, -12 predicate places. [2022-12-13 00:46:52,492 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 00:46:52,492 INFO L89 Accepts]: Start accepts. Operand has 82 places, 98 transitions, 1011 flow [2022-12-13 00:46:52,493 INFO L95 Accepts]: Finished accepts. [2022-12-13 00:46:52,493 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 00:46:52,493 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 98 transitions, 1011 flow [2022-12-13 00:46:52,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 98 transitions, 1011 flow [2022-12-13 00:46:54,223 INFO L130 PetriNetUnfolder]: 18775/30191 cut-off events. [2022-12-13 00:46:54,223 INFO L131 PetriNetUnfolder]: For 20578/21472 co-relation queries the response was YES. [2022-12-13 00:46:54,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65437 conditions, 30191 events. 18775/30191 cut-off events. For 20578/21472 co-relation queries the response was YES. Maximal size of possible extension queue 3867. Compared 283147 event pairs, 11092 based on Foata normal form. 38/13132 useless extension candidates. Maximal degree in co-relation 65406. Up to 27253 conditions per place. [2022-12-13 00:46:54,494 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 98 transitions, 1011 flow [2022-12-13 00:46:54,495 INFO L226 LiptonReduction]: Number of co-enabled transitions 2808 [2022-12-13 00:46:55,223 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 00:46:55,224 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2732 [2022-12-13 00:46:55,224 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 98 transitions, 1011 flow [2022-12-13 00:46:55,224 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 00:46:55,224 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 00:46:55,224 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 00:46:55,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 00:46:55,224 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 00:46:55,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 00:46:55,225 INFO L85 PathProgramCache]: Analyzing trace with hash 864552022, now seen corresponding path program 1 times [2022-12-13 00:46:55,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 00:46:55,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708277216] [2022-12-13 00:46:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 00:46:55,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 00:46:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 00:46:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 00:46:55,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 00:46:55,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708277216] [2022-12-13 00:46:55,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708277216] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 00:46:55,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 00:46:55,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 00:46:55,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33291202] [2022-12-13 00:46:55,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 00:46:55,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 00:46:55,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 00:46:55,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 00:46:55,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 00:46:55,319 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2022-12-13 00:46:55,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 98 transitions, 1011 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 00:46:55,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 00:46:55,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2022-12-13 00:46:55,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand