/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 21:10:24,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 21:10:24,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 21:10:24,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 21:10:24,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 21:10:24,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 21:10:24,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 21:10:24,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 21:10:24,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 21:10:24,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 21:10:24,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 21:10:24,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 21:10:24,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 21:10:24,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 21:10:24,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 21:10:24,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 21:10:24,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 21:10:24,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 21:10:24,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 21:10:24,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 21:10:24,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 21:10:24,235 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 21:10:24,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 21:10:24,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 21:10:24,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 21:10:24,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 21:10:24,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 21:10:24,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 21:10:24,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 21:10:24,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 21:10:24,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 21:10:24,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 21:10:24,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 21:10:24,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 21:10:24,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 21:10:24,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 21:10:24,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 21:10:24,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 21:10:24,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 21:10:24,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 21:10:24,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 21:10:24,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 21:10:24,259 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 21:10:24,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 21:10:24,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 21:10:24,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 21:10:24,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 21:10:24,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 21:10:24,260 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 21:10:24,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 21:10:24,260 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 21:10:24,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 21:10:24,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 21:10:24,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 21:10:24,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 21:10:24,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 21:10:24,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 21:10:24,261 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 21:10:24,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 21:10:24,261 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 21:10:24,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 21:10:24,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 21:10:24,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 21:10:24,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 21:10:24,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 21:10:24,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:10:24,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 21:10:24,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 21:10:24,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 21:10:24,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 21:10:24,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 21:10:24,262 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 21:10:24,262 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 21:10:24,262 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 21:10:24,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 21:10:24,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 21:10:24,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 21:10:24,414 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 21:10:24,415 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 21:10:24,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2023-01-27 21:10:25,440 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 21:10:25,557 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 21:10:25,557 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2023-01-27 21:10:25,562 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5f999ee0/9d01603b8f5a46dfa9f7842a05c07498/FLAG2c240534e [2023-01-27 21:10:25,570 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5f999ee0/9d01603b8f5a46dfa9f7842a05c07498 [2023-01-27 21:10:25,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 21:10:25,572 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 21:10:25,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 21:10:25,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 21:10:25,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 21:10:25,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79739e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25, skipping insertion in model container [2023-01-27 21:10:25,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 21:10:25,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 21:10:25,699 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c[3963,3976] [2023-01-27 21:10:25,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:10:25,710 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 21:10:25,739 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c[3963,3976] [2023-01-27 21:10:25,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:10:25,746 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:10:25,746 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:10:25,750 INFO L208 MainTranslator]: Completed translation [2023-01-27 21:10:25,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25 WrapperNode [2023-01-27 21:10:25,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 21:10:25,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 21:10:25,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 21:10:25,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 21:10:25,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,775 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 247 [2023-01-27 21:10:25,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 21:10:25,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 21:10:25,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 21:10:25,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 21:10:25,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,794 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 21:10:25,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 21:10:25,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 21:10:25,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 21:10:25,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25" (1/1) ... [2023-01-27 21:10:25,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:10:25,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:10:25,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 21:10:25,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 21:10:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 21:10:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 21:10:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 21:10:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 21:10:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 21:10:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 21:10:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 21:10:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-27 21:10:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-27 21:10:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 21:10:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-01-27 21:10:25,844 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-01-27 21:10:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 21:10:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 21:10:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 21:10:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 21:10:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 21:10:25,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 21:10:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 21:10:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 21:10:25,846 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 21:10:25,939 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 21:10:25,940 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 21:10:26,217 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 21:10:26,278 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 21:10:26,278 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 21:10:26,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:10:26 BoogieIcfgContainer [2023-01-27 21:10:26,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 21:10:26,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 21:10:26,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 21:10:26,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 21:10:26,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 09:10:25" (1/3) ... [2023-01-27 21:10:26,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619fac6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:10:26, skipping insertion in model container [2023-01-27 21:10:26,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:10:25" (2/3) ... [2023-01-27 21:10:26,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@619fac6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:10:26, skipping insertion in model container [2023-01-27 21:10:26,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:10:26" (3/3) ... [2023-01-27 21:10:26,285 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2023-01-27 21:10:26,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 21:10:26,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 21:10:26,295 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 21:10:26,386 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-27 21:10:26,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 167 transitions, 374 flow [2023-01-27 21:10:26,463 INFO L130 PetriNetUnfolder]: 2/162 cut-off events. [2023-01-27 21:10:26,464 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-27 21:10:26,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 162 events. 2/162 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2023-01-27 21:10:26,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 167 transitions, 374 flow [2023-01-27 21:10:26,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 148 transitions, 326 flow [2023-01-27 21:10:26,472 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 21:10:26,483 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 148 transitions, 326 flow [2023-01-27 21:10:26,485 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 148 transitions, 326 flow [2023-01-27 21:10:26,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 148 transitions, 326 flow [2023-01-27 21:10:26,518 INFO L130 PetriNetUnfolder]: 2/148 cut-off events. [2023-01-27 21:10:26,519 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-27 21:10:26,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 148 events. 2/148 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 124. Up to 2 conditions per place. [2023-01-27 21:10:26,520 INFO L119 LiptonReduction]: Number of co-enabled transitions 2082 [2023-01-27 21:10:30,257 INFO L134 LiptonReduction]: Checked pairs total: 10775 [2023-01-27 21:10:30,258 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-01-27 21:10:30,267 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 21:10:30,270 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5522ebc4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 21:10:30,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 21:10:30,279 INFO L130 PetriNetUnfolder]: 0/41 cut-off events. [2023-01-27 21:10:30,279 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-27 21:10:30,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:30,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:30,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:10:30,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:30,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1886582129, now seen corresponding path program 1 times [2023-01-27 21:10:30,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:30,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085164638] [2023-01-27 21:10:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:30,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:31,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:31,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085164638] [2023-01-27 21:10:31,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085164638] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:31,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:31,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:10:31,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062073844] [2023-01-27 21:10:31,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:31,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:10:31,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:31,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:10:31,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:10:31,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 281 [2023-01-27 21:10:31,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 114 flow. Second operand has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:31,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:31,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 281 [2023-01-27 21:10:31,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:35,721 INFO L130 PetriNetUnfolder]: 64349/83635 cut-off events. [2023-01-27 21:10:35,721 INFO L131 PetriNetUnfolder]: For 5019/5019 co-relation queries the response was YES. [2023-01-27 21:10:35,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171328 conditions, 83635 events. 64349/83635 cut-off events. For 5019/5019 co-relation queries the response was YES. Maximal size of possible extension queue 2027. Compared 448494 event pairs, 14972 based on Foata normal form. 1/83636 useless extension candidates. Maximal degree in co-relation 170159. Up to 35393 conditions per place. [2023-01-27 21:10:35,998 INFO L137 encePairwiseOnDemand]: 268/281 looper letters, 153 selfloop transitions, 26 changer transitions 15/194 dead transitions. [2023-01-27 21:10:35,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 194 transitions, 875 flow [2023-01-27 21:10:36,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 21:10:36,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 21:10:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1284 transitions. [2023-01-27 21:10:36,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5077105575326216 [2023-01-27 21:10:36,011 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1284 transitions. [2023-01-27 21:10:36,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1284 transitions. [2023-01-27 21:10:36,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:36,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1284 transitions. [2023-01-27 21:10:36,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 142.66666666666666) internal successors, (1284), 9 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:36,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:36,025 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:36,026 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 114 flow. Second operand 9 states and 1284 transitions. [2023-01-27 21:10:36,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 194 transitions, 875 flow [2023-01-27 21:10:36,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 194 transitions, 809 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-01-27 21:10:36,179 INFO L231 Difference]: Finished difference. Result has 60 places, 74 transitions, 273 flow [2023-01-27 21:10:36,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=273, PETRI_PLACES=60, PETRI_TRANSITIONS=74} [2023-01-27 21:10:36,182 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-01-27 21:10:36,182 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 74 transitions, 273 flow [2023-01-27 21:10:36,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:36,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:36,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:36,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 21:10:36,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:10:36,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:36,184 INFO L85 PathProgramCache]: Analyzing trace with hash -169135167, now seen corresponding path program 2 times [2023-01-27 21:10:36,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:36,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663074956] [2023-01-27 21:10:36,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:36,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:36,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:36,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663074956] [2023-01-27 21:10:36,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663074956] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:36,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:36,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:10:36,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825207668] [2023-01-27 21:10:36,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:36,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:10:36,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:36,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:10:36,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:10:36,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:10:36,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 74 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:36,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:36,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:10:36,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:38,112 INFO L130 PetriNetUnfolder]: 22462/32041 cut-off events. [2023-01-27 21:10:38,112 INFO L131 PetriNetUnfolder]: For 6920/7024 co-relation queries the response was YES. [2023-01-27 21:10:38,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72603 conditions, 32041 events. 22462/32041 cut-off events. For 6920/7024 co-relation queries the response was YES. Maximal size of possible extension queue 1524. Compared 206335 event pairs, 3182 based on Foata normal form. 472/30857 useless extension candidates. Maximal degree in co-relation 50401. Up to 22809 conditions per place. [2023-01-27 21:10:38,243 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 101 selfloop transitions, 25 changer transitions 0/158 dead transitions. [2023-01-27 21:10:38,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 158 transitions, 738 flow [2023-01-27 21:10:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:10:38,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:10:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1038 transitions. [2023-01-27 21:10:38,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277071682765633 [2023-01-27 21:10:38,245 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1038 transitions. [2023-01-27 21:10:38,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1038 transitions. [2023-01-27 21:10:38,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:38,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1038 transitions. [2023-01-27 21:10:38,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.28571428571428) internal successors, (1038), 7 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:38,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:38,251 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:38,251 INFO L175 Difference]: Start difference. First operand has 60 places, 74 transitions, 273 flow. Second operand 7 states and 1038 transitions. [2023-01-27 21:10:38,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 158 transitions, 738 flow [2023-01-27 21:10:38,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 158 transitions, 731 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 21:10:38,370 INFO L231 Difference]: Finished difference. Result has 68 places, 92 transitions, 390 flow [2023-01-27 21:10:38,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=68, PETRI_TRANSITIONS=92} [2023-01-27 21:10:38,371 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2023-01-27 21:10:38,371 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 92 transitions, 390 flow [2023-01-27 21:10:38,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:38,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:38,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:38,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 21:10:38,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:10:38,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:38,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1209127043, now seen corresponding path program 3 times [2023-01-27 21:10:38,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:38,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478603181] [2023-01-27 21:10:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:38,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:38,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:38,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478603181] [2023-01-27 21:10:38,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478603181] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:38,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:38,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:10:38,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23361218] [2023-01-27 21:10:38,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:38,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:10:38,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:38,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:10:38,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:10:38,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:10:38,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 92 transitions, 390 flow. Second operand has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:38,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:38,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:10:38,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:40,021 INFO L130 PetriNetUnfolder]: 19232/28041 cut-off events. [2023-01-27 21:10:40,021 INFO L131 PetriNetUnfolder]: For 17437/18411 co-relation queries the response was YES. [2023-01-27 21:10:40,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77155 conditions, 28041 events. 19232/28041 cut-off events. For 17437/18411 co-relation queries the response was YES. Maximal size of possible extension queue 1177. Compared 184532 event pairs, 3723 based on Foata normal form. 896/27579 useless extension candidates. Maximal degree in co-relation 50573. Up to 19959 conditions per place. [2023-01-27 21:10:40,156 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 97 selfloop transitions, 36 changer transitions 0/164 dead transitions. [2023-01-27 21:10:40,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 164 transitions, 886 flow [2023-01-27 21:10:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:10:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:10:40,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1032 transitions. [2023-01-27 21:10:40,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246568378240977 [2023-01-27 21:10:40,159 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1032 transitions. [2023-01-27 21:10:40,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1032 transitions. [2023-01-27 21:10:40,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:40,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1032 transitions. [2023-01-27 21:10:40,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.42857142857142) internal successors, (1032), 7 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:40,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:40,165 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:40,165 INFO L175 Difference]: Start difference. First operand has 68 places, 92 transitions, 390 flow. Second operand 7 states and 1032 transitions. [2023-01-27 21:10:40,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 164 transitions, 886 flow [2023-01-27 21:10:40,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 164 transitions, 880 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:10:40,275 INFO L231 Difference]: Finished difference. Result has 75 places, 104 transitions, 534 flow [2023-01-27 21:10:40,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=534, PETRI_PLACES=75, PETRI_TRANSITIONS=104} [2023-01-27 21:10:40,275 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-01-27 21:10:40,275 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 104 transitions, 534 flow [2023-01-27 21:10:40,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:40,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:40,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:40,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 21:10:40,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:10:40,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:40,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1580156935, now seen corresponding path program 4 times [2023-01-27 21:10:40,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:40,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525535746] [2023-01-27 21:10:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:40,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:40,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:40,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:40,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525535746] [2023-01-27 21:10:40,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525535746] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:40,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:40,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:10:40,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202507037] [2023-01-27 21:10:40,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:40,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:10:40,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:40,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:10:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:10:40,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:10:40,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 104 transitions, 534 flow. Second operand has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:40,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:40,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:10:40,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:44,174 INFO L130 PetriNetUnfolder]: 43502/65145 cut-off events. [2023-01-27 21:10:44,175 INFO L131 PetriNetUnfolder]: For 57077/57949 co-relation queries the response was YES. [2023-01-27 21:10:44,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186197 conditions, 65145 events. 43502/65145 cut-off events. For 57077/57949 co-relation queries the response was YES. Maximal size of possible extension queue 3147. Compared 507173 event pairs, 6834 based on Foata normal form. 868/63085 useless extension candidates. Maximal degree in co-relation 111031. Up to 19576 conditions per place. [2023-01-27 21:10:44,703 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 134 selfloop transitions, 85 changer transitions 0/250 dead transitions. [2023-01-27 21:10:44,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 250 transitions, 1560 flow [2023-01-27 21:10:44,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 21:10:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 21:10:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1338 transitions. [2023-01-27 21:10:44,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5290628706998813 [2023-01-27 21:10:44,706 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1338 transitions. [2023-01-27 21:10:44,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1338 transitions. [2023-01-27 21:10:44,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:44,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1338 transitions. [2023-01-27 21:10:44,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 148.66666666666666) internal successors, (1338), 9 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:44,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:44,713 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:44,713 INFO L175 Difference]: Start difference. First operand has 75 places, 104 transitions, 534 flow. Second operand 9 states and 1338 transitions. [2023-01-27 21:10:44,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 250 transitions, 1560 flow [2023-01-27 21:10:45,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 250 transitions, 1554 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 21:10:45,937 INFO L231 Difference]: Finished difference. Result has 86 places, 155 transitions, 1138 flow [2023-01-27 21:10:45,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=528, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1138, PETRI_PLACES=86, PETRI_TRANSITIONS=155} [2023-01-27 21:10:45,937 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-01-27 21:10:45,937 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 155 transitions, 1138 flow [2023-01-27 21:10:45,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:45,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:45,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:45,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 21:10:45,938 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:10:45,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:45,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1901603651, now seen corresponding path program 5 times [2023-01-27 21:10:45,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:45,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156831189] [2023-01-27 21:10:45,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:45,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:46,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:46,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156831189] [2023-01-27 21:10:46,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156831189] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:46,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:46,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:10:46,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135124674] [2023-01-27 21:10:46,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:46,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:10:46,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:46,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:10:46,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:10:46,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:10:46,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 155 transitions, 1138 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:46,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:46,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:10:46,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:10:51,543 INFO L130 PetriNetUnfolder]: 53657/81911 cut-off events. [2023-01-27 21:10:51,543 INFO L131 PetriNetUnfolder]: For 163467/170473 co-relation queries the response was YES. [2023-01-27 21:10:51,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286265 conditions, 81911 events. 53657/81911 cut-off events. For 163467/170473 co-relation queries the response was YES. Maximal size of possible extension queue 4020. Compared 678860 event pairs, 9236 based on Foata normal form. 1728/80203 useless extension candidates. Maximal degree in co-relation 160961. Up to 22391 conditions per place. [2023-01-27 21:10:52,044 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 145 selfloop transitions, 178 changer transitions 3/357 dead transitions. [2023-01-27 21:10:52,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 357 transitions, 2957 flow [2023-01-27 21:10:52,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 21:10:52,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 21:10:52,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1631 transitions. [2023-01-27 21:10:52,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276609511484956 [2023-01-27 21:10:52,048 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1631 transitions. [2023-01-27 21:10:52,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1631 transitions. [2023-01-27 21:10:52,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:10:52,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1631 transitions. [2023-01-27 21:10:52,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 148.27272727272728) internal successors, (1631), 11 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:52,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:52,054 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:52,054 INFO L175 Difference]: Start difference. First operand has 86 places, 155 transitions, 1138 flow. Second operand 11 states and 1631 transitions. [2023-01-27 21:10:52,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 357 transitions, 2957 flow [2023-01-27 21:10:54,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 357 transitions, 2911 flow, removed 20 selfloop flow, removed 1 redundant places. [2023-01-27 21:10:54,246 INFO L231 Difference]: Finished difference. Result has 100 places, 250 transitions, 2543 flow [2023-01-27 21:10:54,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2543, PETRI_PLACES=100, PETRI_TRANSITIONS=250} [2023-01-27 21:10:54,247 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 42 predicate places. [2023-01-27 21:10:54,247 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 250 transitions, 2543 flow [2023-01-27 21:10:54,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:54,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:10:54,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:10:54,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 21:10:54,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:10:54,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:10:54,249 INFO L85 PathProgramCache]: Analyzing trace with hash 480139849, now seen corresponding path program 6 times [2023-01-27 21:10:54,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:10:54,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674855112] [2023-01-27 21:10:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:10:54,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:10:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:10:54,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:10:54,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:10:54,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674855112] [2023-01-27 21:10:54,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674855112] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:10:54,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:10:54,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 21:10:54,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549859396] [2023-01-27 21:10:54,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:10:54,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 21:10:54,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:10:54,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 21:10:54,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-27 21:10:54,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:10:54,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 250 transitions, 2543 flow. Second operand has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:10:54,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:10:54,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:10:54,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:11:01,271 INFO L130 PetriNetUnfolder]: 52963/80980 cut-off events. [2023-01-27 21:11:01,272 INFO L131 PetriNetUnfolder]: For 327024/341072 co-relation queries the response was YES. [2023-01-27 21:11:01,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344916 conditions, 80980 events. 52963/80980 cut-off events. For 327024/341072 co-relation queries the response was YES. Maximal size of possible extension queue 4072. Compared 667582 event pairs, 15921 based on Foata normal form. 4340/82124 useless extension candidates. Maximal degree in co-relation 264833. Up to 58116 conditions per place. [2023-01-27 21:11:01,887 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 266 selfloop transitions, 184 changer transitions 16/495 dead transitions. [2023-01-27 21:11:01,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 495 transitions, 5235 flow [2023-01-27 21:11:01,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 21:11:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 21:11:01,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2759 transitions. [2023-01-27 21:11:01,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167634388462259 [2023-01-27 21:11:01,892 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2759 transitions. [2023-01-27 21:11:01,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2759 transitions. [2023-01-27 21:11:01,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:11:01,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2759 transitions. [2023-01-27 21:11:01,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 145.21052631578948) internal successors, (2759), 19 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:01,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 281.0) internal successors, (5620), 20 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:01,902 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 281.0) internal successors, (5620), 20 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:01,902 INFO L175 Difference]: Start difference. First operand has 100 places, 250 transitions, 2543 flow. Second operand 19 states and 2759 transitions. [2023-01-27 21:11:01,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 495 transitions, 5235 flow [2023-01-27 21:11:04,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 495 transitions, 5102 flow, removed 61 selfloop flow, removed 2 redundant places. [2023-01-27 21:11:04,487 INFO L231 Difference]: Finished difference. Result has 125 places, 321 transitions, 3939 flow [2023-01-27 21:11:04,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3939, PETRI_PLACES=125, PETRI_TRANSITIONS=321} [2023-01-27 21:11:04,488 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 67 predicate places. [2023-01-27 21:11:04,488 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 321 transitions, 3939 flow [2023-01-27 21:11:04,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:04,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:11:04,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:11:04,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 21:11:04,489 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:11:04,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:11:04,489 INFO L85 PathProgramCache]: Analyzing trace with hash -72860955, now seen corresponding path program 7 times [2023-01-27 21:11:04,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:11:04,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342125076] [2023-01-27 21:11:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:11:04,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:11:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:11:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:11:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:11:04,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342125076] [2023-01-27 21:11:04,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342125076] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:11:04,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:11:04,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:11:04,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888312161] [2023-01-27 21:11:04,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:11:04,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:11:04,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:11:04,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:11:04,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:11:04,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:11:04,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 321 transitions, 3939 flow. Second operand has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:04,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:11:04,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:11:04,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:11:12,372 INFO L130 PetriNetUnfolder]: 52693/80659 cut-off events. [2023-01-27 21:11:12,372 INFO L131 PetriNetUnfolder]: For 470916/484287 co-relation queries the response was YES. [2023-01-27 21:11:12,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373274 conditions, 80659 events. 52693/80659 cut-off events. For 470916/484287 co-relation queries the response was YES. Maximal size of possible extension queue 4008. Compared 664669 event pairs, 16059 based on Foata normal form. 1300/78809 useless extension candidates. Maximal degree in co-relation 296902. Up to 62649 conditions per place. [2023-01-27 21:11:13,068 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 200 selfloop transitions, 159 changer transitions 16/404 dead transitions. [2023-01-27 21:11:13,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 404 transitions, 5302 flow [2023-01-27 21:11:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 21:11:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 21:11:13,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1309 transitions. [2023-01-27 21:11:13,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175958877026493 [2023-01-27 21:11:13,072 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1309 transitions. [2023-01-27 21:11:13,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1309 transitions. [2023-01-27 21:11:13,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:11:13,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1309 transitions. [2023-01-27 21:11:13,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.44444444444446) internal successors, (1309), 9 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:13,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:13,077 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:13,077 INFO L175 Difference]: Start difference. First operand has 125 places, 321 transitions, 3939 flow. Second operand 9 states and 1309 transitions. [2023-01-27 21:11:13,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 404 transitions, 5302 flow [2023-01-27 21:11:17,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 404 transitions, 5189 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-01-27 21:11:17,468 INFO L231 Difference]: Finished difference. Result has 128 places, 335 transitions, 4563 flow [2023-01-27 21:11:17,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=3706, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4563, PETRI_PLACES=128, PETRI_TRANSITIONS=335} [2023-01-27 21:11:17,469 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 70 predicate places. [2023-01-27 21:11:17,469 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 335 transitions, 4563 flow [2023-01-27 21:11:17,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:17,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:11:17,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:11:17,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 21:11:17,469 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:11:17,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:11:17,470 INFO L85 PathProgramCache]: Analyzing trace with hash -156230979, now seen corresponding path program 8 times [2023-01-27 21:11:17,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:11:17,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118074028] [2023-01-27 21:11:17,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:11:17,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:11:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:11:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:11:17,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:11:17,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118074028] [2023-01-27 21:11:17,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118074028] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:11:17,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:11:17,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:11:17,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457146499] [2023-01-27 21:11:17,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:11:17,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:11:17,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:11:17,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:11:17,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:11:17,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:11:17,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 335 transitions, 4563 flow. Second operand has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:17,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:11:17,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:11:17,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:11:24,489 INFO L130 PetriNetUnfolder]: 47585/73441 cut-off events. [2023-01-27 21:11:24,489 INFO L131 PetriNetUnfolder]: For 433084/441886 co-relation queries the response was YES. [2023-01-27 21:11:24,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341779 conditions, 73441 events. 47585/73441 cut-off events. For 433084/441886 co-relation queries the response was YES. Maximal size of possible extension queue 3871. Compared 607612 event pairs, 15596 based on Foata normal form. 1202/71697 useless extension candidates. Maximal degree in co-relation 341326. Up to 57735 conditions per place. [2023-01-27 21:11:25,093 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 178 selfloop transitions, 151 changer transitions 20/377 dead transitions. [2023-01-27 21:11:25,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 377 transitions, 5533 flow [2023-01-27 21:11:25,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 21:11:25,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 21:11:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1011 transitions. [2023-01-27 21:11:25,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5139806812404677 [2023-01-27 21:11:25,096 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1011 transitions. [2023-01-27 21:11:25,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1011 transitions. [2023-01-27 21:11:25,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:11:25,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1011 transitions. [2023-01-27 21:11:25,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.42857142857142) internal successors, (1011), 7 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:25,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:25,099 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:25,100 INFO L175 Difference]: Start difference. First operand has 128 places, 335 transitions, 4563 flow. Second operand 7 states and 1011 transitions. [2023-01-27 21:11:25,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 377 transitions, 5533 flow [2023-01-27 21:11:27,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 377 transitions, 5353 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-01-27 21:11:27,020 INFO L231 Difference]: Finished difference. Result has 126 places, 324 transitions, 4751 flow [2023-01-27 21:11:27,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4010, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4751, PETRI_PLACES=126, PETRI_TRANSITIONS=324} [2023-01-27 21:11:27,022 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 68 predicate places. [2023-01-27 21:11:27,022 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 324 transitions, 4751 flow [2023-01-27 21:11:27,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:27,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:11:27,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:11:27,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 21:11:27,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:11:27,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:11:27,023 INFO L85 PathProgramCache]: Analyzing trace with hash -977038993, now seen corresponding path program 9 times [2023-01-27 21:11:27,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:11:27,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412425585] [2023-01-27 21:11:27,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:11:27,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:11:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:11:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:11:27,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:11:27,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412425585] [2023-01-27 21:11:27,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412425585] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:11:27,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:11:27,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 21:11:27,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885594967] [2023-01-27 21:11:27,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:11:27,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 21:11:27,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:11:27,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 21:11:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-27 21:11:27,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:11:27,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 324 transitions, 4751 flow. Second operand has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:27,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:11:27,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:11:27,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:11:33,670 INFO L130 PetriNetUnfolder]: 45993/71560 cut-off events. [2023-01-27 21:11:33,670 INFO L131 PetriNetUnfolder]: For 392738/402925 co-relation queries the response was YES. [2023-01-27 21:11:34,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329380 conditions, 71560 events. 45993/71560 cut-off events. For 392738/402925 co-relation queries the response was YES. Maximal size of possible extension queue 3768. Compared 598508 event pairs, 16223 based on Foata normal form. 932/69863 useless extension candidates. Maximal degree in co-relation 329344. Up to 58847 conditions per place. [2023-01-27 21:11:34,525 INFO L137 encePairwiseOnDemand]: 273/281 looper letters, 295 selfloop transitions, 50 changer transitions 0/372 dead transitions. [2023-01-27 21:11:34,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 372 transitions, 5883 flow [2023-01-27 21:11:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:11:34,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:11:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 723 transitions. [2023-01-27 21:11:34,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145907473309609 [2023-01-27 21:11:34,527 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 723 transitions. [2023-01-27 21:11:34,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 723 transitions. [2023-01-27 21:11:34,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:11:34,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 723 transitions. [2023-01-27 21:11:34,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:34,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:34,530 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:34,530 INFO L175 Difference]: Start difference. First operand has 126 places, 324 transitions, 4751 flow. Second operand 5 states and 723 transitions. [2023-01-27 21:11:34,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 372 transitions, 5883 flow [2023-01-27 21:11:36,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 372 transitions, 5655 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-27 21:11:36,972 INFO L231 Difference]: Finished difference. Result has 113 places, 332 transitions, 4836 flow [2023-01-27 21:11:36,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4383, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4836, PETRI_PLACES=113, PETRI_TRANSITIONS=332} [2023-01-27 21:11:36,973 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 55 predicate places. [2023-01-27 21:11:36,973 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 332 transitions, 4836 flow [2023-01-27 21:11:36,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:36,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:11:36,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:11:36,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 21:11:36,973 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:11:36,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:11:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash -444821677, now seen corresponding path program 10 times [2023-01-27 21:11:36,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:11:36,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111486059] [2023-01-27 21:11:36,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:11:36,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:11:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:11:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:11:37,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:11:37,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111486059] [2023-01-27 21:11:37,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111486059] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:11:37,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:11:37,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:11:37,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645712696] [2023-01-27 21:11:37,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:11:37,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:11:37,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:11:37,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:11:37,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:11:37,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:11:37,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 332 transitions, 4836 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:37,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:11:37,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:11:37,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:11:43,517 INFO L130 PetriNetUnfolder]: 45908/71973 cut-off events. [2023-01-27 21:11:43,518 INFO L131 PetriNetUnfolder]: For 355428/365764 co-relation queries the response was YES. [2023-01-27 21:11:43,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317514 conditions, 71973 events. 45908/71973 cut-off events. For 355428/365764 co-relation queries the response was YES. Maximal size of possible extension queue 3721. Compared 605377 event pairs, 9981 based on Foata normal form. 2652/71980 useless extension candidates. Maximal degree in co-relation 317481. Up to 44942 conditions per place. [2023-01-27 21:11:44,219 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 231 selfloop transitions, 238 changer transitions 0/496 dead transitions. [2023-01-27 21:11:44,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 496 transitions, 7138 flow [2023-01-27 21:11:44,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 21:11:44,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 21:11:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1594 transitions. [2023-01-27 21:11:44,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5156907149789712 [2023-01-27 21:11:44,222 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1594 transitions. [2023-01-27 21:11:44,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1594 transitions. [2023-01-27 21:11:44,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:11:44,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1594 transitions. [2023-01-27 21:11:44,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.9090909090909) internal successors, (1594), 11 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:44,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:44,228 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:44,228 INFO L175 Difference]: Start difference. First operand has 113 places, 332 transitions, 4836 flow. Second operand 11 states and 1594 transitions. [2023-01-27 21:11:44,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 496 transitions, 7138 flow [2023-01-27 21:11:45,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 496 transitions, 7088 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 21:11:45,691 INFO L231 Difference]: Finished difference. Result has 123 places, 386 transitions, 6192 flow [2023-01-27 21:11:45,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=4786, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6192, PETRI_PLACES=123, PETRI_TRANSITIONS=386} [2023-01-27 21:11:45,691 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 65 predicate places. [2023-01-27 21:11:45,691 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 386 transitions, 6192 flow [2023-01-27 21:11:45,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:45,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:11:45,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:11:45,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 21:11:45,692 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:11:45,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:11:45,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1085046347, now seen corresponding path program 11 times [2023-01-27 21:11:45,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:11:45,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479740430] [2023-01-27 21:11:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:11:45,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:11:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:11:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:11:45,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:11:45,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479740430] [2023-01-27 21:11:45,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479740430] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:11:45,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:11:45,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:11:45,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921626418] [2023-01-27 21:11:45,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:11:45,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:11:45,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:11:45,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:11:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:11:45,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:11:45,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 386 transitions, 6192 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:45,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:11:45,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:11:45,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:11:52,976 INFO L130 PetriNetUnfolder]: 46704/73161 cut-off events. [2023-01-27 21:11:52,976 INFO L131 PetriNetUnfolder]: For 460825/474473 co-relation queries the response was YES. [2023-01-27 21:11:53,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347926 conditions, 73161 events. 46704/73161 cut-off events. For 460825/474473 co-relation queries the response was YES. Maximal size of possible extension queue 3753. Compared 615344 event pairs, 10463 based on Foata normal form. 4456/74946 useless extension candidates. Maximal degree in co-relation 347891. Up to 45586 conditions per place. [2023-01-27 21:11:53,923 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 232 selfloop transitions, 250 changer transitions 0/509 dead transitions. [2023-01-27 21:11:53,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 509 transitions, 8028 flow [2023-01-27 21:11:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 21:11:53,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 21:11:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1600 transitions. [2023-01-27 21:11:53,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517631834357813 [2023-01-27 21:11:53,926 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1600 transitions. [2023-01-27 21:11:53,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1600 transitions. [2023-01-27 21:11:53,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:11:53,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1600 transitions. [2023-01-27 21:11:53,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 145.45454545454547) internal successors, (1600), 11 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:53,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:53,932 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:53,932 INFO L175 Difference]: Start difference. First operand has 123 places, 386 transitions, 6192 flow. Second operand 11 states and 1600 transitions. [2023-01-27 21:11:53,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 509 transitions, 8028 flow [2023-01-27 21:11:55,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 509 transitions, 7694 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-01-27 21:11:55,640 INFO L231 Difference]: Finished difference. Result has 130 places, 405 transitions, 6867 flow [2023-01-27 21:11:55,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=5874, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6867, PETRI_PLACES=130, PETRI_TRANSITIONS=405} [2023-01-27 21:11:55,640 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 72 predicate places. [2023-01-27 21:11:55,640 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 405 transitions, 6867 flow [2023-01-27 21:11:55,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:55,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:11:55,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:11:55,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 21:11:55,641 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:11:55,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:11:55,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1710255359, now seen corresponding path program 12 times [2023-01-27 21:11:55,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:11:55,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006181041] [2023-01-27 21:11:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:11:55,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:11:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:11:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:11:55,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:11:55,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006181041] [2023-01-27 21:11:55,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006181041] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:11:55,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:11:55,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 21:11:55,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129628277] [2023-01-27 21:11:55,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:11:55,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 21:11:55,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:11:55,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 21:11:55,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-27 21:11:55,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:11:55,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 405 transitions, 6867 flow. Second operand has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:11:55,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:11:55,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:11:55,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:12:03,389 INFO L130 PetriNetUnfolder]: 47161/74505 cut-off events. [2023-01-27 21:12:03,389 INFO L131 PetriNetUnfolder]: For 530125/551656 co-relation queries the response was YES. [2023-01-27 21:12:03,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373452 conditions, 74505 events. 47161/74505 cut-off events. For 530125/551656 co-relation queries the response was YES. Maximal size of possible extension queue 3938. Compared 639660 event pairs, 8013 based on Foata normal form. 8133/79817 useless extension candidates. Maximal degree in co-relation 373415. Up to 31268 conditions per place. [2023-01-27 21:12:04,244 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 193 selfloop transitions, 327 changer transitions 6/553 dead transitions. [2023-01-27 21:12:04,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 553 transitions, 9176 flow [2023-01-27 21:12:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 21:12:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 21:12:04,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1331 transitions. [2023-01-27 21:12:04,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5262949782522737 [2023-01-27 21:12:04,246 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1331 transitions. [2023-01-27 21:12:04,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1331 transitions. [2023-01-27 21:12:04,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:12:04,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1331 transitions. [2023-01-27 21:12:04,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 147.88888888888889) internal successors, (1331), 9 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:04,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:04,250 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 281.0) internal successors, (2810), 10 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:04,250 INFO L175 Difference]: Start difference. First operand has 130 places, 405 transitions, 6867 flow. Second operand 9 states and 1331 transitions. [2023-01-27 21:12:04,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 553 transitions, 9176 flow [2023-01-27 21:12:06,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 553 transitions, 8967 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-01-27 21:12:06,734 INFO L231 Difference]: Finished difference. Result has 135 places, 445 transitions, 8175 flow [2023-01-27 21:12:06,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=6696, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8175, PETRI_PLACES=135, PETRI_TRANSITIONS=445} [2023-01-27 21:12:06,735 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 77 predicate places. [2023-01-27 21:12:06,735 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 445 transitions, 8175 flow [2023-01-27 21:12:06,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:06,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:12:06,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:12:06,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 21:12:06,736 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:12:06,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:12:06,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1006455521, now seen corresponding path program 13 times [2023-01-27 21:12:06,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:12:06,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404132190] [2023-01-27 21:12:06,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:12:06,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:12:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:12:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:12:07,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:12:07,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404132190] [2023-01-27 21:12:07,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404132190] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:12:07,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:12:07,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 21:12:07,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377606717] [2023-01-27 21:12:07,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:12:07,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 21:12:07,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:12:07,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 21:12:07,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-01-27 21:12:07,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:12:07,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 445 transitions, 8175 flow. Second operand has 11 states, 11 states have (on average 133.27272727272728) internal successors, (1466), 11 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:07,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:12:07,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:12:07,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:12:16,780 INFO L130 PetriNetUnfolder]: 55494/88480 cut-off events. [2023-01-27 21:12:16,780 INFO L131 PetriNetUnfolder]: For 824747/847499 co-relation queries the response was YES. [2023-01-27 21:12:17,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470900 conditions, 88480 events. 55494/88480 cut-off events. For 824747/847499 co-relation queries the response was YES. Maximal size of possible extension queue 4912. Compared 791366 event pairs, 13611 based on Foata normal form. 7426/92345 useless extension candidates. Maximal degree in co-relation 470862. Up to 47855 conditions per place. [2023-01-27 21:12:17,587 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 342 selfloop transitions, 316 changer transitions 1/686 dead transitions. [2023-01-27 21:12:17,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 686 transitions, 12055 flow [2023-01-27 21:12:17,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-27 21:12:17,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-27 21:12:17,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2605 transitions. [2023-01-27 21:12:17,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150257018584421 [2023-01-27 21:12:17,590 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2605 transitions. [2023-01-27 21:12:17,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2605 transitions. [2023-01-27 21:12:17,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:12:17,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2605 transitions. [2023-01-27 21:12:17,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 144.72222222222223) internal successors, (2605), 18 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:17,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:17,596 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 281.0) internal successors, (5339), 19 states have internal predecessors, (5339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:17,596 INFO L175 Difference]: Start difference. First operand has 135 places, 445 transitions, 8175 flow. Second operand 18 states and 2605 transitions. [2023-01-27 21:12:17,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 686 transitions, 12055 flow [2023-01-27 21:12:20,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 686 transitions, 11573 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 21:12:20,976 INFO L231 Difference]: Finished difference. Result has 153 places, 542 transitions, 10556 flow [2023-01-27 21:12:20,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=7809, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10556, PETRI_PLACES=153, PETRI_TRANSITIONS=542} [2023-01-27 21:12:20,977 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 95 predicate places. [2023-01-27 21:12:20,977 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 542 transitions, 10556 flow [2023-01-27 21:12:20,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.27272727272728) internal successors, (1466), 11 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:20,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:12:20,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:12:20,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 21:12:20,977 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:12:20,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:12:20,978 INFO L85 PathProgramCache]: Analyzing trace with hash -27895093, now seen corresponding path program 14 times [2023-01-27 21:12:20,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:12:20,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850968531] [2023-01-27 21:12:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:12:20,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:12:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:12:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:12:21,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:12:21,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850968531] [2023-01-27 21:12:21,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850968531] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:12:21,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:12:21,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:12:21,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282843036] [2023-01-27 21:12:21,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:12:21,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:12:21,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:12:21,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:12:21,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:12:21,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:12:21,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 542 transitions, 10556 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:21,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:12:21,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:12:21,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:12:32,080 INFO L130 PetriNetUnfolder]: 55468/88956 cut-off events. [2023-01-27 21:12:32,081 INFO L131 PetriNetUnfolder]: For 1006395/1028238 co-relation queries the response was YES. [2023-01-27 21:12:32,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493933 conditions, 88956 events. 55468/88956 cut-off events. For 1006395/1028238 co-relation queries the response was YES. Maximal size of possible extension queue 4801. Compared 799264 event pairs, 16756 based on Foata normal form. 3102/88762 useless extension candidates. Maximal degree in co-relation 493890. Up to 67607 conditions per place. [2023-01-27 21:12:33,171 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 454 selfloop transitions, 226 changer transitions 11/718 dead transitions. [2023-01-27 21:12:33,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 718 transitions, 14442 flow [2023-01-27 21:12:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 21:12:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 21:12:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1733 transitions. [2023-01-27 21:12:33,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513938315539739 [2023-01-27 21:12:33,173 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1733 transitions. [2023-01-27 21:12:33,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1733 transitions. [2023-01-27 21:12:33,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:12:33,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1733 transitions. [2023-01-27 21:12:33,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.41666666666666) internal successors, (1733), 12 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:33,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:33,177 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:33,177 INFO L175 Difference]: Start difference. First operand has 153 places, 542 transitions, 10556 flow. Second operand 12 states and 1733 transitions. [2023-01-27 21:12:33,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 718 transitions, 14442 flow [2023-01-27 21:12:38,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 718 transitions, 14095 flow, removed 61 selfloop flow, removed 5 redundant places. [2023-01-27 21:12:38,980 INFO L231 Difference]: Finished difference. Result has 160 places, 604 transitions, 12381 flow [2023-01-27 21:12:38,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=10279, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12381, PETRI_PLACES=160, PETRI_TRANSITIONS=604} [2023-01-27 21:12:38,981 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 102 predicate places. [2023-01-27 21:12:38,981 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 604 transitions, 12381 flow [2023-01-27 21:12:38,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:38,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:12:38,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:12:38,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 21:12:38,981 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:12:38,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:12:38,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1533231369, now seen corresponding path program 15 times [2023-01-27 21:12:38,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:12:38,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883744761] [2023-01-27 21:12:38,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:12:38,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:12:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:12:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:12:39,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:12:39,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883744761] [2023-01-27 21:12:39,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883744761] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:12:39,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:12:39,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:12:39,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730261217] [2023-01-27 21:12:39,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:12:39,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:12:39,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:12:39,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:12:39,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:12:39,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 281 [2023-01-27 21:12:39,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 604 transitions, 12381 flow. Second operand has 8 states, 8 states have (on average 124.25) internal successors, (994), 8 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:12:39,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:12:39,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 281 [2023-01-27 21:12:39,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:12:58,657 INFO L130 PetriNetUnfolder]: 106658/152519 cut-off events. [2023-01-27 21:12:58,658 INFO L131 PetriNetUnfolder]: For 1373639/1373639 co-relation queries the response was YES. [2023-01-27 21:12:59,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820192 conditions, 152519 events. 106658/152519 cut-off events. For 1373639/1373639 co-relation queries the response was YES. Maximal size of possible extension queue 5184. Compared 1137372 event pairs, 21897 based on Foata normal form. 2592/155111 useless extension candidates. Maximal degree in co-relation 820147. Up to 59518 conditions per place. [2023-01-27 21:13:00,071 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 328 selfloop transitions, 554 changer transitions 8/890 dead transitions. [2023-01-27 21:13:00,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 890 transitions, 16763 flow [2023-01-27 21:13:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 21:13:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 21:13:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1662 transitions. [2023-01-27 21:13:00,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928825622775801 [2023-01-27 21:13:00,073 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1662 transitions. [2023-01-27 21:13:00,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1662 transitions. [2023-01-27 21:13:00,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:13:00,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1662 transitions. [2023-01-27 21:13:00,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 138.5) internal successors, (1662), 12 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:00,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:00,081 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 281.0) internal successors, (3653), 13 states have internal predecessors, (3653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:00,081 INFO L175 Difference]: Start difference. First operand has 160 places, 604 transitions, 12381 flow. Second operand 12 states and 1662 transitions. [2023-01-27 21:13:00,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 890 transitions, 16763 flow [2023-01-27 21:13:18,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 890 transitions, 16295 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-01-27 21:13:18,181 INFO L231 Difference]: Finished difference. Result has 167 places, 672 transitions, 14889 flow [2023-01-27 21:13:18,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=11941, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=481, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14889, PETRI_PLACES=167, PETRI_TRANSITIONS=672} [2023-01-27 21:13:18,182 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 109 predicate places. [2023-01-27 21:13:18,182 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 672 transitions, 14889 flow [2023-01-27 21:13:18,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.25) internal successors, (994), 8 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:18,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:13:18,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:13:18,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 21:13:18,182 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:13:18,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:13:18,183 INFO L85 PathProgramCache]: Analyzing trace with hash -218457063, now seen corresponding path program 16 times [2023-01-27 21:13:18,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:13:18,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175389008] [2023-01-27 21:13:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:13:18,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:13:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:13:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:13:18,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:13:18,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175389008] [2023-01-27 21:13:18,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175389008] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:13:18,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:13:18,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:13:18,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311214534] [2023-01-27 21:13:18,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:13:18,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:13:18,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:13:18,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:13:18,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:13:18,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:13:18,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 672 transitions, 14889 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:18,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:13:18,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:13:18,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:13:26,241 INFO L130 PetriNetUnfolder]: 31302/52977 cut-off events. [2023-01-27 21:13:26,241 INFO L131 PetriNetUnfolder]: For 581636/599340 co-relation queries the response was YES. [2023-01-27 21:13:26,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295682 conditions, 52977 events. 31302/52977 cut-off events. For 581636/599340 co-relation queries the response was YES. Maximal size of possible extension queue 2641. Compared 477424 event pairs, 7055 based on Foata normal form. 7280/58417 useless extension candidates. Maximal degree in co-relation 295633. Up to 22433 conditions per place. [2023-01-27 21:13:26,765 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 215 selfloop transitions, 756 changer transitions 11/1004 dead transitions. [2023-01-27 21:13:26,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 1004 transitions, 22708 flow [2023-01-27 21:13:26,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 21:13:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 21:13:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1618 transitions. [2023-01-27 21:13:26,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234551924943384 [2023-01-27 21:13:26,767 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1618 transitions. [2023-01-27 21:13:26,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1618 transitions. [2023-01-27 21:13:26,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:13:26,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1618 transitions. [2023-01-27 21:13:26,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 147.0909090909091) internal successors, (1618), 11 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:26,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:26,771 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:26,771 INFO L175 Difference]: Start difference. First operand has 167 places, 672 transitions, 14889 flow. Second operand 11 states and 1618 transitions. [2023-01-27 21:13:26,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 1004 transitions, 22708 flow [2023-01-27 21:13:30,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1004 transitions, 21599 flow, removed 39 selfloop flow, removed 9 redundant places. [2023-01-27 21:13:30,973 INFO L231 Difference]: Finished difference. Result has 171 places, 874 transitions, 20912 flow [2023-01-27 21:13:30,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=12218, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=484, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=20912, PETRI_PLACES=171, PETRI_TRANSITIONS=874} [2023-01-27 21:13:30,974 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 113 predicate places. [2023-01-27 21:13:30,974 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 874 transitions, 20912 flow [2023-01-27 21:13:30,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:30,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:13:30,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:13:30,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 21:13:30,975 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:13:30,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:13:30,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1679870159, now seen corresponding path program 17 times [2023-01-27 21:13:30,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:13:30,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882295843] [2023-01-27 21:13:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:13:30,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:13:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:13:31,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:13:31,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:13:31,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882295843] [2023-01-27 21:13:31,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882295843] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:13:31,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:13:31,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 21:13:31,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753396687] [2023-01-27 21:13:31,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:13:31,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 21:13:31,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:13:31,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 21:13:31,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-27 21:13:31,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:13:31,157 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 874 transitions, 20912 flow. Second operand has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:31,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:13:31,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:13:31,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:13:41,560 INFO L130 PetriNetUnfolder]: 36872/62506 cut-off events. [2023-01-27 21:13:41,561 INFO L131 PetriNetUnfolder]: For 696767/714626 co-relation queries the response was YES. [2023-01-27 21:13:41,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347240 conditions, 62506 events. 36872/62506 cut-off events. For 696767/714626 co-relation queries the response was YES. Maximal size of possible extension queue 3099. Compared 577086 event pairs, 4123 based on Foata normal form. 4888/65616 useless extension candidates. Maximal degree in co-relation 347189. Up to 19141 conditions per place. [2023-01-27 21:13:42,205 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 200 selfloop transitions, 834 changer transitions 0/1056 dead transitions. [2023-01-27 21:13:42,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1056 transitions, 24318 flow [2023-01-27 21:13:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 21:13:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 21:13:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1913 transitions. [2023-01-27 21:13:42,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236791678072816 [2023-01-27 21:13:42,207 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1913 transitions. [2023-01-27 21:13:42,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1913 transitions. [2023-01-27 21:13:42,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:13:42,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1913 transitions. [2023-01-27 21:13:42,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 147.15384615384616) internal successors, (1913), 13 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:42,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 281.0) internal successors, (3934), 14 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:42,211 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 281.0) internal successors, (3934), 14 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:42,211 INFO L175 Difference]: Start difference. First operand has 171 places, 874 transitions, 20912 flow. Second operand 13 states and 1913 transitions. [2023-01-27 21:13:42,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1056 transitions, 24318 flow [2023-01-27 21:13:47,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 1056 transitions, 24086 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-01-27 21:13:47,243 INFO L231 Difference]: Finished difference. Result has 181 places, 917 transitions, 23968 flow [2023-01-27 21:13:47,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=20702, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=874, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=797, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=23968, PETRI_PLACES=181, PETRI_TRANSITIONS=917} [2023-01-27 21:13:47,244 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 123 predicate places. [2023-01-27 21:13:47,244 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 917 transitions, 23968 flow [2023-01-27 21:13:47,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:47,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:13:47,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:13:47,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 21:13:47,245 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:13:47,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:13:47,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1000282989, now seen corresponding path program 18 times [2023-01-27 21:13:47,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:13:47,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067537849] [2023-01-27 21:13:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:13:47,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:13:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:13:47,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:13:47,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:13:47,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067537849] [2023-01-27 21:13:47,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067537849] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:13:47,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:13:47,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 21:13:47,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721556843] [2023-01-27 21:13:47,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:13:47,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 21:13:47,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:13:47,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 21:13:47,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-01-27 21:13:47,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:13:47,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 917 transitions, 23968 flow. Second operand has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:47,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:13:47,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:13:47,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:13:58,779 INFO L130 PetriNetUnfolder]: 35824/61265 cut-off events. [2023-01-27 21:13:58,779 INFO L131 PetriNetUnfolder]: For 893737/914627 co-relation queries the response was YES. [2023-01-27 21:13:59,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377047 conditions, 61265 events. 35824/61265 cut-off events. For 893737/914627 co-relation queries the response was YES. Maximal size of possible extension queue 3111. Compared 570380 event pairs, 6390 based on Foata normal form. 6104/65725 useless extension candidates. Maximal degree in co-relation 376993. Up to 20507 conditions per place. [2023-01-27 21:13:59,463 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 214 selfloop transitions, 894 changer transitions 18/1148 dead transitions. [2023-01-27 21:13:59,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 1148 transitions, 29077 flow [2023-01-27 21:13:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 21:13:59,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 21:13:59,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2189 transitions. [2023-01-27 21:13:59,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5193357058125742 [2023-01-27 21:13:59,466 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2189 transitions. [2023-01-27 21:13:59,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2189 transitions. [2023-01-27 21:13:59,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:13:59,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2189 transitions. [2023-01-27 21:13:59,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.93333333333334) internal successors, (2189), 15 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:59,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 281.0) internal successors, (4496), 16 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:59,470 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 281.0) internal successors, (4496), 16 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:13:59,470 INFO L175 Difference]: Start difference. First operand has 181 places, 917 transitions, 23968 flow. Second operand 15 states and 2189 transitions. [2023-01-27 21:13:59,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 1148 transitions, 29077 flow [2023-01-27 21:14:08,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 1148 transitions, 28071 flow, removed 146 selfloop flow, removed 9 redundant places. [2023-01-27 21:14:08,379 INFO L231 Difference]: Finished difference. Result has 189 places, 991 transitions, 26911 flow [2023-01-27 21:14:08,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=23009, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=914, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=804, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=26911, PETRI_PLACES=189, PETRI_TRANSITIONS=991} [2023-01-27 21:14:08,380 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 131 predicate places. [2023-01-27 21:14:08,381 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 991 transitions, 26911 flow [2023-01-27 21:14:08,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:08,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:14:08,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:14:08,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 21:14:08,381 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:14:08,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:14:08,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1781493359, now seen corresponding path program 19 times [2023-01-27 21:14:08,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:14:08,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239316009] [2023-01-27 21:14:08,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:14:08,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:14:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:14:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:14:08,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:14:08,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239316009] [2023-01-27 21:14:08,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239316009] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:14:08,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:14:08,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 21:14:08,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410242909] [2023-01-27 21:14:08,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:14:08,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:14:08,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:14:08,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:14:08,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-27 21:14:08,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:14:08,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 991 transitions, 26911 flow. Second operand has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:08,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:14:08,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:14:08,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:14:19,843 INFO L130 PetriNetUnfolder]: 35326/60839 cut-off events. [2023-01-27 21:14:19,843 INFO L131 PetriNetUnfolder]: For 962143/979451 co-relation queries the response was YES. [2023-01-27 21:14:20,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377521 conditions, 60839 events. 35326/60839 cut-off events. For 962143/979451 co-relation queries the response was YES. Maximal size of possible extension queue 3081. Compared 572649 event pairs, 3828 based on Foata normal form. 4606/63785 useless extension candidates. Maximal degree in co-relation 377467. Up to 18636 conditions per place. [2023-01-27 21:14:20,511 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 181 selfloop transitions, 906 changer transitions 5/1114 dead transitions. [2023-01-27 21:14:20,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 1114 transitions, 29934 flow [2023-01-27 21:14:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-27 21:14:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-27 21:14:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1486 transitions. [2023-01-27 21:14:20,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288256227758007 [2023-01-27 21:14:20,513 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1486 transitions. [2023-01-27 21:14:20,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1486 transitions. [2023-01-27 21:14:20,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:14:20,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1486 transitions. [2023-01-27 21:14:20,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 148.6) internal successors, (1486), 10 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:20,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 281.0) internal successors, (3091), 11 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:20,516 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 281.0) internal successors, (3091), 11 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:20,516 INFO L175 Difference]: Start difference. First operand has 189 places, 991 transitions, 26911 flow. Second operand 10 states and 1486 transitions. [2023-01-27 21:14:20,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 1114 transitions, 29934 flow [2023-01-27 21:14:29,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 1114 transitions, 28741 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 21:14:29,333 INFO L231 Difference]: Finished difference. Result has 192 places, 998 transitions, 28271 flow [2023-01-27 21:14:29,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=25722, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=894, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28271, PETRI_PLACES=192, PETRI_TRANSITIONS=998} [2023-01-27 21:14:29,334 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 134 predicate places. [2023-01-27 21:14:29,334 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 998 transitions, 28271 flow [2023-01-27 21:14:29,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.5) internal successors, (1076), 8 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:29,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:14:29,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:14:29,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 21:14:29,334 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:14:29,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:14:29,335 INFO L85 PathProgramCache]: Analyzing trace with hash -25389585, now seen corresponding path program 20 times [2023-01-27 21:14:29,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:14:29,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324010951] [2023-01-27 21:14:29,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:14:29,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:14:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:14:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:14:29,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:14:29,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324010951] [2023-01-27 21:14:29,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324010951] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:14:29,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:14:29,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 21:14:29,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068680227] [2023-01-27 21:14:29,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:14:29,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 21:14:29,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:14:29,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 21:14:29,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-01-27 21:14:29,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 281 [2023-01-27 21:14:29,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 998 transitions, 28271 flow. Second operand has 9 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:29,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:14:29,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 281 [2023-01-27 21:14:29,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:14:41,666 INFO L130 PetriNetUnfolder]: 36546/63352 cut-off events. [2023-01-27 21:14:41,666 INFO L131 PetriNetUnfolder]: For 1067144/1083440 co-relation queries the response was YES. [2023-01-27 21:14:42,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411276 conditions, 63352 events. 36546/63352 cut-off events. For 1067144/1083440 co-relation queries the response was YES. Maximal size of possible extension queue 3072. Compared 600077 event pairs, 7552 based on Foata normal form. 2528/64178 useless extension candidates. Maximal degree in co-relation 411220. Up to 24802 conditions per place. [2023-01-27 21:14:42,326 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 257 selfloop transitions, 882 changer transitions 0/1161 dead transitions. [2023-01-27 21:14:42,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 1161 transitions, 32244 flow [2023-01-27 21:14:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 21:14:42,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 21:14:42,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1651 transitions. [2023-01-27 21:14:42,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5341313490779683 [2023-01-27 21:14:42,328 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1651 transitions. [2023-01-27 21:14:42,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1651 transitions. [2023-01-27 21:14:42,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:14:42,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1651 transitions. [2023-01-27 21:14:42,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 150.0909090909091) internal successors, (1651), 11 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:42,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:42,331 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 281.0) internal successors, (3372), 12 states have internal predecessors, (3372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:42,331 INFO L175 Difference]: Start difference. First operand has 192 places, 998 transitions, 28271 flow. Second operand 11 states and 1651 transitions. [2023-01-27 21:14:42,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 1161 transitions, 32244 flow [2023-01-27 21:14:52,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 1161 transitions, 30711 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-01-27 21:14:52,114 INFO L231 Difference]: Finished difference. Result has 195 places, 1050 transitions, 30316 flow [2023-01-27 21:14:52,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=26868, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=998, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=839, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=30316, PETRI_PLACES=195, PETRI_TRANSITIONS=1050} [2023-01-27 21:14:52,115 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 137 predicate places. [2023-01-27 21:14:52,115 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 1050 transitions, 30316 flow [2023-01-27 21:14:52,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:52,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:14:52,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:14:52,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-27 21:14:52,115 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:14:52,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:14:52,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1983354975, now seen corresponding path program 21 times [2023-01-27 21:14:52,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:14:52,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886927522] [2023-01-27 21:14:52,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:14:52,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:14:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:14:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:14:52,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:14:52,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886927522] [2023-01-27 21:14:52,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886927522] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:14:52,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:14:52,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 21:14:52,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136096205] [2023-01-27 21:14:52,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:14:52,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 21:14:52,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:14:52,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 21:14:52,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-27 21:14:52,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:14:52,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 1050 transitions, 30316 flow. Second operand has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:14:52,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:14:52,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:14:52,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:15:05,328 INFO L130 PetriNetUnfolder]: 36686/64008 cut-off events. [2023-01-27 21:15:05,328 INFO L131 PetriNetUnfolder]: For 1170308/1184502 co-relation queries the response was YES. [2023-01-27 21:15:05,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415987 conditions, 64008 events. 36686/64008 cut-off events. For 1170308/1184502 co-relation queries the response was YES. Maximal size of possible extension queue 3174. Compared 612005 event pairs, 10818 based on Foata normal form. 1570/64116 useless extension candidates. Maximal degree in co-relation 415931. Up to 46276 conditions per place. [2023-01-27 21:15:05,969 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 661 selfloop transitions, 503 changer transitions 8/1194 dead transitions. [2023-01-27 21:15:05,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 1194 transitions, 34255 flow [2023-01-27 21:15:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 21:15:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 21:15:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2706 transitions. [2023-01-27 21:15:05,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068364862333771 [2023-01-27 21:15:05,972 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2706 transitions. [2023-01-27 21:15:05,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2706 transitions. [2023-01-27 21:15:05,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:15:05,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2706 transitions. [2023-01-27 21:15:05,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 142.42105263157896) internal successors, (2706), 19 states have internal predecessors, (2706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:05,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 281.0) internal successors, (5620), 20 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:05,977 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 281.0) internal successors, (5620), 20 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:05,977 INFO L175 Difference]: Start difference. First operand has 195 places, 1050 transitions, 30316 flow. Second operand 19 states and 2706 transitions. [2023-01-27 21:15:05,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 1194 transitions, 34255 flow [2023-01-27 21:15:15,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 1194 transitions, 34216 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-01-27 21:15:15,995 INFO L231 Difference]: Finished difference. Result has 212 places, 1062 transitions, 31658 flow [2023-01-27 21:15:15,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=30277, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=31658, PETRI_PLACES=212, PETRI_TRANSITIONS=1062} [2023-01-27 21:15:15,996 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 154 predicate places. [2023-01-27 21:15:15,996 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 1062 transitions, 31658 flow [2023-01-27 21:15:15,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:15,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:15:15,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:15:15,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 21:15:15,997 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:15:15,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:15:15,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1281576133, now seen corresponding path program 22 times [2023-01-27 21:15:15,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:15:15,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995281097] [2023-01-27 21:15:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:15:15,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:15:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:15:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:15:16,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:15:16,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995281097] [2023-01-27 21:15:16,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995281097] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:15:16,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:15:16,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 21:15:16,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183047438] [2023-01-27 21:15:16,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:15:16,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 21:15:16,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:15:16,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 21:15:16,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-01-27 21:15:16,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 281 [2023-01-27 21:15:16,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 1062 transitions, 31658 flow. Second operand has 11 states, 11 states have (on average 122.81818181818181) internal successors, (1351), 11 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:16,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:15:16,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 281 [2023-01-27 21:15:16,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:15:38,815 INFO L130 PetriNetUnfolder]: 70571/107634 cut-off events. [2023-01-27 21:15:38,815 INFO L131 PetriNetUnfolder]: For 1557046/1557046 co-relation queries the response was YES. [2023-01-27 21:15:39,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 674987 conditions, 107634 events. 70571/107634 cut-off events. For 1557046/1557046 co-relation queries the response was YES. Maximal size of possible extension queue 3612. Compared 864377 event pairs, 14308 based on Foata normal form. 120/107754 useless extension candidates. Maximal degree in co-relation 674929. Up to 36967 conditions per place. [2023-01-27 21:15:39,878 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 368 selfloop transitions, 1175 changer transitions 8/1551 dead transitions. [2023-01-27 21:15:39,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 1551 transitions, 42030 flow [2023-01-27 21:15:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 21:15:39,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 21:15:39,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2836 transitions. [2023-01-27 21:15:39,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48059650906625995 [2023-01-27 21:15:39,882 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2836 transitions. [2023-01-27 21:15:39,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2836 transitions. [2023-01-27 21:15:39,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:15:39,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2836 transitions. [2023-01-27 21:15:39,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 135.04761904761904) internal successors, (2836), 21 states have internal predecessors, (2836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:39,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 281.0) internal successors, (6182), 22 states have internal predecessors, (6182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:39,888 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 281.0) internal successors, (6182), 22 states have internal predecessors, (6182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:15:39,889 INFO L175 Difference]: Start difference. First operand has 212 places, 1062 transitions, 31658 flow. Second operand 21 states and 2836 transitions. [2023-01-27 21:15:39,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 1551 transitions, 42030 flow [2023-01-27 21:16:02,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 1551 transitions, 40913 flow, removed 39 selfloop flow, removed 18 redundant places. [2023-01-27 21:16:02,066 INFO L231 Difference]: Finished difference. Result has 220 places, 1277 transitions, 39689 flow [2023-01-27 21:16:02,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=30654, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=966, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=39689, PETRI_PLACES=220, PETRI_TRANSITIONS=1277} [2023-01-27 21:16:02,068 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 162 predicate places. [2023-01-27 21:16:02,068 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 1277 transitions, 39689 flow [2023-01-27 21:16:02,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 122.81818181818181) internal successors, (1351), 11 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:02,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:16:02,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:16:02,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-27 21:16:02,068 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:16:02,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:16:02,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1515037635, now seen corresponding path program 23 times [2023-01-27 21:16:02,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:16:02,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905644770] [2023-01-27 21:16:02,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:16:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:16:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:16:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:16:02,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:16:02,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905644770] [2023-01-27 21:16:02,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905644770] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:16:02,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:16:02,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 21:16:02,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981294856] [2023-01-27 21:16:02,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:16:02,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 21:16:02,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:16:02,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 21:16:02,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-27 21:16:02,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:16:02,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 1277 transitions, 39689 flow. Second operand has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:02,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:16:02,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:16:02,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:16:17,358 INFO L130 PetriNetUnfolder]: 36302/63914 cut-off events. [2023-01-27 21:16:17,358 INFO L131 PetriNetUnfolder]: For 1462101/1484000 co-relation queries the response was YES. [2023-01-27 21:16:17,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455767 conditions, 63914 events. 36302/63914 cut-off events. For 1462101/1484000 co-relation queries the response was YES. Maximal size of possible extension queue 3148. Compared 619353 event pairs, 4414 based on Foata normal form. 5784/68325 useless extension candidates. Maximal degree in co-relation 455703. Up to 18710 conditions per place. [2023-01-27 21:16:18,249 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 252 selfloop transitions, 1211 changer transitions 4/1489 dead transitions. [2023-01-27 21:16:18,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 1489 transitions, 45745 flow [2023-01-27 21:16:18,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 21:16:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 21:16:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1921 transitions. [2023-01-27 21:16:18,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5258691486449494 [2023-01-27 21:16:18,251 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1921 transitions. [2023-01-27 21:16:18,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1921 transitions. [2023-01-27 21:16:18,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:16:18,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1921 transitions. [2023-01-27 21:16:18,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 147.76923076923077) internal successors, (1921), 13 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:18,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 281.0) internal successors, (3934), 14 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:18,255 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 281.0) internal successors, (3934), 14 states have internal predecessors, (3934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:18,255 INFO L175 Difference]: Start difference. First operand has 220 places, 1277 transitions, 39689 flow. Second operand 13 states and 1921 transitions. [2023-01-27 21:16:18,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 1489 transitions, 45745 flow [2023-01-27 21:16:33,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 1489 transitions, 45391 flow, removed 109 selfloop flow, removed 6 redundant places. [2023-01-27 21:16:33,413 INFO L231 Difference]: Finished difference. Result has 228 places, 1338 transitions, 44366 flow [2023-01-27 21:16:33,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=39403, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=44366, PETRI_PLACES=228, PETRI_TRANSITIONS=1338} [2023-01-27 21:16:33,414 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 170 predicate places. [2023-01-27 21:16:33,414 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 1338 transitions, 44366 flow [2023-01-27 21:16:33,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:33,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:16:33,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:16:33,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-27 21:16:33,415 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:16:33,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:16:33,415 INFO L85 PathProgramCache]: Analyzing trace with hash 18294399, now seen corresponding path program 24 times [2023-01-27 21:16:33,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:16:33,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303490902] [2023-01-27 21:16:33,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:16:33,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:16:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:16:33,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:16:33,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:16:33,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303490902] [2023-01-27 21:16:33,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303490902] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:16:33,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:16:33,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 21:16:33,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401872446] [2023-01-27 21:16:33,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:16:33,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 21:16:33,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:16:33,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 21:16:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-01-27 21:16:33,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:16:33,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 1338 transitions, 44366 flow. Second operand has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:33,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:16:33,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:16:33,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:16:50,171 INFO L130 PetriNetUnfolder]: 36267/64185 cut-off events. [2023-01-27 21:16:50,171 INFO L131 PetriNetUnfolder]: For 1701748/1720676 co-relation queries the response was YES. [2023-01-27 21:16:50,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488219 conditions, 64185 events. 36267/64185 cut-off events. For 1701748/1720676 co-relation queries the response was YES. Maximal size of possible extension queue 3179. Compared 623886 event pairs, 11079 based on Foata normal form. 1460/64266 useless extension candidates. Maximal degree in co-relation 488153. Up to 50027 conditions per place. [2023-01-27 21:16:50,907 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 1086 selfloop transitions, 350 changer transitions 14/1472 dead transitions. [2023-01-27 21:16:50,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 1472 transitions, 48727 flow [2023-01-27 21:16:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 21:16:50,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 21:16:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2688 transitions. [2023-01-27 21:16:50,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034650683648624 [2023-01-27 21:16:50,910 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2688 transitions. [2023-01-27 21:16:50,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2688 transitions. [2023-01-27 21:16:50,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:16:50,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2688 transitions. [2023-01-27 21:16:50,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 141.47368421052633) internal successors, (2688), 19 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:50,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 281.0) internal successors, (5620), 20 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:50,915 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 281.0) internal successors, (5620), 20 states have internal predecessors, (5620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:16:50,915 INFO L175 Difference]: Start difference. First operand has 228 places, 1338 transitions, 44366 flow. Second operand 19 states and 2688 transitions. [2023-01-27 21:16:50,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 1472 transitions, 48727 flow [2023-01-27 21:17:08,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 1472 transitions, 48223 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-01-27 21:17:08,869 INFO L231 Difference]: Finished difference. Result has 241 places, 1346 transitions, 44867 flow [2023-01-27 21:17:08,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=43929, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=988, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=44867, PETRI_PLACES=241, PETRI_TRANSITIONS=1346} [2023-01-27 21:17:08,870 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 183 predicate places. [2023-01-27 21:17:08,870 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 1346 transitions, 44867 flow [2023-01-27 21:17:08,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 133.6) internal successors, (1336), 10 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:17:08,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:17:08,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:17:08,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-27 21:17:08,870 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:17:08,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:17:08,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1864138089, now seen corresponding path program 25 times [2023-01-27 21:17:08,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:17:08,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921203965] [2023-01-27 21:17:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:17:08,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:17:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:17:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:17:09,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:17:09,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921203965] [2023-01-27 21:17:09,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921203965] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:17:09,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:17:09,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 21:17:09,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095006099] [2023-01-27 21:17:09,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:17:09,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 21:17:09,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:17:09,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 21:17:09,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-01-27 21:17:09,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:17:09,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 1346 transitions, 44867 flow. Second operand has 11 states, 11 states have (on average 133.27272727272728) internal successors, (1466), 11 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:17:09,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:17:09,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:17:09,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:17:25,690 INFO L130 PetriNetUnfolder]: 36806/65268 cut-off events. [2023-01-27 21:17:25,690 INFO L131 PetriNetUnfolder]: For 1743411/1767207 co-relation queries the response was YES. [2023-01-27 21:17:26,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488248 conditions, 65268 events. 36806/65268 cut-off events. For 1743411/1767207 co-relation queries the response was YES. Maximal size of possible extension queue 3296. Compared 640661 event pairs, 4499 based on Foata normal form. 5474/69425 useless extension candidates. Maximal degree in co-relation 488181. Up to 17612 conditions per place. [2023-01-27 21:17:26,488 INFO L137 encePairwiseOnDemand]: 269/281 looper letters, 280 selfloop transitions, 1247 changer transitions 0/1549 dead transitions. [2023-01-27 21:17:26,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1549 transitions, 49686 flow [2023-01-27 21:17:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-27 21:17:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-27 21:17:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2485 transitions. [2023-01-27 21:17:26,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202009629474565 [2023-01-27 21:17:26,490 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2485 transitions. [2023-01-27 21:17:26,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2485 transitions. [2023-01-27 21:17:26,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:17:26,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2485 transitions. [2023-01-27 21:17:26,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 146.1764705882353) internal successors, (2485), 17 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:17:26,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:17:26,495 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:17:26,495 INFO L175 Difference]: Start difference. First operand has 241 places, 1346 transitions, 44867 flow. Second operand 17 states and 2485 transitions. [2023-01-27 21:17:26,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 1549 transitions, 49686 flow [2023-01-27 21:17:46,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 1549 transitions, 49218 flow, removed 26 selfloop flow, removed 13 redundant places. [2023-01-27 21:17:46,041 INFO L231 Difference]: Finished difference. Result has 246 places, 1375 transitions, 47801 flow [2023-01-27 21:17:46,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=44413, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=47801, PETRI_PLACES=246, PETRI_TRANSITIONS=1375} [2023-01-27 21:17:46,042 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 188 predicate places. [2023-01-27 21:17:46,042 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 1375 transitions, 47801 flow [2023-01-27 21:17:46,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 133.27272727272728) internal successors, (1466), 11 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:17:46,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:17:46,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:17:46,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-27 21:17:46,042 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-01-27 21:17:46,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:17:46,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2147096413, now seen corresponding path program 26 times [2023-01-27 21:17:46,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:17:46,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178411106] [2023-01-27 21:17:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:17:46,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:17:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:17:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:17:46,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:17:46,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178411106] [2023-01-27 21:17:46,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178411106] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:17:46,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:17:46,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-27 21:17:46,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087336583] [2023-01-27 21:17:46,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:17:46,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 21:17:46,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:17:46,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 21:17:46,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-27 21:17:46,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 281 [2023-01-27 21:17:46,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 1375 transitions, 47801 flow. Second operand has 9 states, 9 states have (on average 134.0) internal successors, (1206), 9 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:17:46,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:17:46,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 281 [2023-01-27 21:17:46,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand