/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:01:16,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:01:16,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:01:16,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:01:16,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:01:16,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:01:16,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:01:16,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:01:16,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:01:16,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:01:16,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:01:16,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:01:16,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:01:16,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:01:16,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:01:16,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:01:16,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:01:16,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:01:16,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:01:16,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:01:16,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:01:16,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:01:16,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:01:16,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:01:16,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:01:16,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:01:16,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:01:16,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:01:16,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:01:16,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:01:16,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:01:16,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:01:16,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:01:16,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:01:16,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:01:16,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:01:16,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:01:16,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:01:16,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:01:16,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:01:16,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:01:16,412 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 [2023-01-28 09:01:16,433 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:01:16,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:01:16,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:01:16,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:01:16,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:01:16,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:01:16,435 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:01:16,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:01:16,436 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:01:16,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:01:16,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:01:16,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:01:16,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:01:16,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:01:16,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:01:16,437 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:01:16,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:01:16,437 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:01:16,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:01:16,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:01:16,437 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:01:16,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:01:16,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:01:16,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:01:16,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:01:16,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:01:16,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:01:16,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:01:16,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:01:16,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:01:16,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:01:16,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:01:16,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:01:16,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:01:16,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:01:16,639 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:01:16,639 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:01:16,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-01-28 09:01:17,650 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:01:17,820 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:01:17,820 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-01-28 09:01:17,826 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1edf3bf64/5fbecd22317d41f7979836289c266985/FLAGef5797352 [2023-01-28 09:01:17,852 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1edf3bf64/5fbecd22317d41f7979836289c266985 [2023-01-28 09:01:17,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:01:17,855 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:01:17,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:01:17,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:01:17,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:01:17,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:01:17" (1/1) ... [2023-01-28 09:01:17,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@799482f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:17, skipping insertion in model container [2023-01-28 09:01:17,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:01:17" (1/1) ... [2023-01-28 09:01:17,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:01:17,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:01:18,034 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/chl-node-symm.wvr.c[3305,3318] [2023-01-28 09:01:18,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:01:18,059 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:01:18,090 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/chl-node-symm.wvr.c[3305,3318] [2023-01-28 09:01:18,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:01:18,108 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:01:18,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18 WrapperNode [2023-01-28 09:01:18,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:01:18,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:01:18,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:01:18,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:01:18,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18" (1/1) ... [2023-01-28 09:01:18,130 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18" (1/1) ... [2023-01-28 09:01:18,162 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 294 [2023-01-28 09:01:18,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:01:18,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:01:18,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:01:18,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:01:18,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18" (1/1) ... [2023-01-28 09:01:18,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18" (1/1) ... [2023-01-28 09:01:18,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18" (1/1) ... [2023-01-28 09:01:18,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18" (1/1) ... [2023-01-28 09:01:18,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18" (1/1) ... [2023-01-28 09:01:18,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18" (1/1) ... [2023-01-28 09:01:18,198 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18" (1/1) ... [2023-01-28 09:01:18,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18" (1/1) ... [2023-01-28 09:01:18,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:01:18,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:01:18,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:01:18,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:01:18,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18" (1/1) ... [2023-01-28 09:01:18,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:01:18,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:01:18,225 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) [2023-01-28 09:01:18,250 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 [2023-01-28 09:01:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:01:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:01:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:01:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:01:18,269 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:01:18,270 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:01:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:01:18,270 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:01:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:01:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 09:01:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:01:18,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:01:18,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:01:18,271 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:01:18,343 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:01:18,344 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:01:18,738 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:01:18,747 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:01:18,747 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 09:01:18,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:01:18 BoogieIcfgContainer [2023-01-28 09:01:18,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:01:18,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:01:18,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:01:18,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:01:18,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:01:17" (1/3) ... [2023-01-28 09:01:18,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337d1254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:01:18, skipping insertion in model container [2023-01-28 09:01:18,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:01:18" (2/3) ... [2023-01-28 09:01:18,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337d1254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:01:18, skipping insertion in model container [2023-01-28 09:01:18,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:01:18" (3/3) ... [2023-01-28 09:01:18,755 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-01-28 09:01:18,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:01:18,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:01:18,768 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:01:18,834 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 09:01:18,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 343 transitions, 702 flow [2023-01-28 09:01:18,945 INFO L130 PetriNetUnfolder]: 28/341 cut-off events. [2023-01-28 09:01:18,945 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:01:18,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 341 events. 28/341 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 339 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 270. Up to 2 conditions per place. [2023-01-28 09:01:18,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 343 transitions, 702 flow [2023-01-28 09:01:18,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 333 transitions, 678 flow [2023-01-28 09:01:18,958 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:01:18,969 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 333 transitions, 678 flow [2023-01-28 09:01:18,971 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 333 transitions, 678 flow [2023-01-28 09:01:18,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 333 transitions, 678 flow [2023-01-28 09:01:19,064 INFO L130 PetriNetUnfolder]: 28/333 cut-off events. [2023-01-28 09:01:19,064 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:01:19,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 333 events. 28/333 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 338 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 270. Up to 2 conditions per place. [2023-01-28 09:01:19,068 INFO L119 LiptonReduction]: Number of co-enabled transitions 6048 [2023-01-28 09:01:28,726 INFO L134 LiptonReduction]: Checked pairs total: 6391 [2023-01-28 09:01:28,726 INFO L136 LiptonReduction]: Total number of compositions: 393 [2023-01-28 09:01:28,743 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:01:28,751 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;@7cd4d155, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:01:28,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 09:01:28,761 INFO L130 PetriNetUnfolder]: 5/24 cut-off events. [2023-01-28 09:01:28,761 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:01:28,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:28,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:28,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:28,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:28,769 INFO L85 PathProgramCache]: Analyzing trace with hash 432883374, now seen corresponding path program 1 times [2023-01-28 09:01:28,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:28,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914098609] [2023-01-28 09:01:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:28,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:01:29,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:29,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914098609] [2023-01-28 09:01:29,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914098609] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:29,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:29,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:01:29,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579088074] [2023-01-28 09:01:29,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:29,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:01:29,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:29,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:01:29,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:01:29,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 736 [2023-01-28 09:01:29,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 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) [2023-01-28 09:01:29,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:29,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 736 [2023-01-28 09:01:29,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:29,246 INFO L130 PetriNetUnfolder]: 49/103 cut-off events. [2023-01-28 09:01:29,246 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 09:01:29,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 103 events. 49/103 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 39 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 182. Up to 103 conditions per place. [2023-01-28 09:01:29,251 INFO L137 encePairwiseOnDemand]: 733/736 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-01-28 09:01:29,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 116 flow [2023-01-28 09:01:29,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:01:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:01:29,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 915 transitions. [2023-01-28 09:01:29,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41440217391304346 [2023-01-28 09:01:29,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 915 transitions. [2023-01-28 09:01:29,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 915 transitions. [2023-01-28 09:01:29,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:29,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 915 transitions. [2023-01-28 09:01:29,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.0) internal successors, (915), 3 states have internal predecessors, (915), 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) [2023-01-28 09:01:29,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 736.0) internal successors, (2944), 4 states have internal predecessors, (2944), 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) [2023-01-28 09:01:29,289 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 736.0) internal successors, (2944), 4 states have internal predecessors, (2944), 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) [2023-01-28 09:01:29,290 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 62 flow. Second operand 3 states and 915 transitions. [2023-01-28 09:01:29,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 116 flow [2023-01-28 09:01:29,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 09:01:29,294 INFO L231 Difference]: Finished difference. Result has 26 places, 26 transitions, 66 flow [2023-01-28 09:01:29,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=26, PETRI_TRANSITIONS=26} [2023-01-28 09:01:29,299 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -1 predicate places. [2023-01-28 09:01:29,299 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 26 transitions, 66 flow [2023-01-28 09:01:29,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 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) [2023-01-28 09:01:29,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:29,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:01:29,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:01:29,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:29,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:29,301 INFO L85 PathProgramCache]: Analyzing trace with hash 855870377, now seen corresponding path program 1 times [2023-01-28 09:01:29,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:29,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501645331] [2023-01-28 09:01:29,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:29,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:01:29,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:29,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501645331] [2023-01-28 09:01:29,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501645331] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:29,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:29,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:01:29,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492331201] [2023-01-28 09:01:29,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:29,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:01:29,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:29,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:01:29,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:01:29,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 736 [2023-01-28 09:01:29,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 26 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 288.75) internal successors, (1155), 4 states have internal predecessors, (1155), 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) [2023-01-28 09:01:29,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:29,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 736 [2023-01-28 09:01:29,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:29,560 INFO L130 PetriNetUnfolder]: 49/104 cut-off events. [2023-01-28 09:01:29,561 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 09:01:29,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 104 events. 49/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 39 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 214. Up to 102 conditions per place. [2023-01-28 09:01:29,561 INFO L137 encePairwiseOnDemand]: 731/736 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-01-28 09:01:29,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 122 flow [2023-01-28 09:01:29,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:01:29,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:01:29,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1164 transitions. [2023-01-28 09:01:29,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3953804347826087 [2023-01-28 09:01:29,565 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1164 transitions. [2023-01-28 09:01:29,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1164 transitions. [2023-01-28 09:01:29,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:29,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1164 transitions. [2023-01-28 09:01:29,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-01-28 09:01:29,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 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) [2023-01-28 09:01:29,575 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 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) [2023-01-28 09:01:29,575 INFO L175 Difference]: Start difference. First operand has 26 places, 26 transitions, 66 flow. Second operand 4 states and 1164 transitions. [2023-01-28 09:01:29,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 122 flow [2023-01-28 09:01:29,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 118 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:29,576 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 80 flow [2023-01-28 09:01:29,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-01-28 09:01:29,577 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-01-28 09:01:29,577 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 80 flow [2023-01-28 09:01:29,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 288.75) internal successors, (1155), 4 states have internal predecessors, (1155), 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) [2023-01-28 09:01:29,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:29,578 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] [2023-01-28 09:01:29,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:01:29,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:29,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:29,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1025184123, now seen corresponding path program 1 times [2023-01-28 09:01:29,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:29,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858374323] [2023-01-28 09:01:29,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:29,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 09:01:29,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:29,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858374323] [2023-01-28 09:01:29,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858374323] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:29,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:29,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:01:29,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553736373] [2023-01-28 09:01:29,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:29,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:01:29,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:29,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:01:29,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:01:29,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 736 [2023-01-28 09:01:29,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-01-28 09:01:29,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:29,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 736 [2023-01-28 09:01:29,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:29,822 INFO L130 PetriNetUnfolder]: 49/105 cut-off events. [2023-01-28 09:01:29,822 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 09:01:29,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 105 events. 49/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 39 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 214. Up to 104 conditions per place. [2023-01-28 09:01:29,823 INFO L137 encePairwiseOnDemand]: 732/736 looper letters, 25 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-01-28 09:01:29,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 138 flow [2023-01-28 09:01:29,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:01:29,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:01:29,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1171 transitions. [2023-01-28 09:01:29,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397758152173913 [2023-01-28 09:01:29,839 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1171 transitions. [2023-01-28 09:01:29,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1171 transitions. [2023-01-28 09:01:29,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:29,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1171 transitions. [2023-01-28 09:01:29,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 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) [2023-01-28 09:01:29,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 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) [2023-01-28 09:01:29,846 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 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) [2023-01-28 09:01:29,846 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 80 flow. Second operand 4 states and 1171 transitions. [2023-01-28 09:01:29,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 138 flow [2023-01-28 09:01:29,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 137 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:29,847 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 93 flow [2023-01-28 09:01:29,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-01-28 09:01:29,848 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-28 09:01:29,848 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 93 flow [2023-01-28 09:01:29,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.0) internal successors, (1164), 4 states have internal predecessors, (1164), 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) [2023-01-28 09:01:29,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:29,849 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] [2023-01-28 09:01:29,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:01:29,849 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:29,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:29,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2006272341, now seen corresponding path program 1 times [2023-01-28 09:01:29,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:29,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20499876] [2023-01-28 09:01:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:29,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:01:29,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:29,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20499876] [2023-01-28 09:01:29,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20499876] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:29,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:29,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:01:29,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029839242] [2023-01-28 09:01:29,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:29,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:01:29,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:29,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:01:29,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:01:29,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 736 [2023-01-28 09:01:29,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 291.25) internal successors, (1165), 4 states have internal predecessors, (1165), 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) [2023-01-28 09:01:29,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:29,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 736 [2023-01-28 09:01:29,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:29,976 INFO L130 PetriNetUnfolder]: 49/106 cut-off events. [2023-01-28 09:01:29,976 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 09:01:29,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 106 events. 49/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 39 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 221. Up to 105 conditions per place. [2023-01-28 09:01:29,977 INFO L137 encePairwiseOnDemand]: 732/736 looper letters, 26 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-01-28 09:01:29,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 153 flow [2023-01-28 09:01:29,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:01:29,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:01:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1171 transitions. [2023-01-28 09:01:29,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397758152173913 [2023-01-28 09:01:29,980 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1171 transitions. [2023-01-28 09:01:29,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1171 transitions. [2023-01-28 09:01:29,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:29,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1171 transitions. [2023-01-28 09:01:29,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 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) [2023-01-28 09:01:29,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 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) [2023-01-28 09:01:29,986 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 736.0) internal successors, (3680), 5 states have internal predecessors, (3680), 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) [2023-01-28 09:01:29,987 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 93 flow. Second operand 4 states and 1171 transitions. [2023-01-28 09:01:29,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 153 flow [2023-01-28 09:01:29,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 147 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:29,988 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 101 flow [2023-01-28 09:01:29,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-01-28 09:01:29,988 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-01-28 09:01:29,989 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 101 flow [2023-01-28 09:01:29,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 291.25) internal successors, (1165), 4 states have internal predecessors, (1165), 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) [2023-01-28 09:01:29,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:29,989 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] [2023-01-28 09:01:29,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 09:01:29,990 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:29,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:29,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1187833151, now seen corresponding path program 1 times [2023-01-28 09:01:29,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:29,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18696304] [2023-01-28 09:01:29,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:29,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:31,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:31,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:31,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18696304] [2023-01-28 09:01:31,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18696304] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:31,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:31,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:01:31,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300718291] [2023-01-28 09:01:31,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:31,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:01:31,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:31,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:01:31,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:01:31,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 736 [2023-01-28 09:01:31,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 101 flow. Second operand has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 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) [2023-01-28 09:01:31,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:31,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 736 [2023-01-28 09:01:31,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:31,435 INFO L130 PetriNetUnfolder]: 83/192 cut-off events. [2023-01-28 09:01:31,435 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 09:01:31,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 192 events. 83/192 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 724 event pairs, 8 based on Foata normal form. 1/179 useless extension candidates. Maximal degree in co-relation 402. Up to 84 conditions per place. [2023-01-28 09:01:31,436 INFO L137 encePairwiseOnDemand]: 725/736 looper letters, 50 selfloop transitions, 14 changer transitions 5/69 dead transitions. [2023-01-28 09:01:31,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 330 flow [2023-01-28 09:01:31,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:01:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:01:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2516 transitions. [2023-01-28 09:01:31,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3418478260869565 [2023-01-28 09:01:31,441 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2516 transitions. [2023-01-28 09:01:31,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2516 transitions. [2023-01-28 09:01:31,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:31,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2516 transitions. [2023-01-28 09:01:31,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.6) internal successors, (2516), 10 states have internal predecessors, (2516), 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) [2023-01-28 09:01:31,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 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) [2023-01-28 09:01:31,455 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 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) [2023-01-28 09:01:31,456 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 101 flow. Second operand 10 states and 2516 transitions. [2023-01-28 09:01:31,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 330 flow [2023-01-28 09:01:31,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 324 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:31,458 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 177 flow [2023-01-28 09:01:31,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=177, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-01-28 09:01:31,460 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-01-28 09:01:31,460 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 177 flow [2023-01-28 09:01:31,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 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) [2023-01-28 09:01:31,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:31,461 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] [2023-01-28 09:01:31,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:01:31,461 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:31,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:31,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1223626605, now seen corresponding path program 2 times [2023-01-28 09:01:31,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:31,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877898800] [2023-01-28 09:01:31,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:31,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:32,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:32,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877898800] [2023-01-28 09:01:32,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877898800] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:32,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:32,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:01:32,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384605063] [2023-01-28 09:01:32,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:32,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:32,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:32,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:32,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 736 [2023-01-28 09:01:32,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 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) [2023-01-28 09:01:32,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:32,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 736 [2023-01-28 09:01:32,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:32,941 INFO L130 PetriNetUnfolder]: 88/215 cut-off events. [2023-01-28 09:01:32,942 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2023-01-28 09:01:32,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 215 events. 88/215 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 826 event pairs, 16 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 634. Up to 88 conditions per place. [2023-01-28 09:01:32,943 INFO L137 encePairwiseOnDemand]: 727/736 looper letters, 53 selfloop transitions, 18 changer transitions 5/76 dead transitions. [2023-01-28 09:01:32,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 460 flow [2023-01-28 09:01:32,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:01:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:01:32,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2355 transitions. [2023-01-28 09:01:32,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3555253623188406 [2023-01-28 09:01:32,948 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2355 transitions. [2023-01-28 09:01:32,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2355 transitions. [2023-01-28 09:01:32,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:32,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2355 transitions. [2023-01-28 09:01:32,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 261.6666666666667) internal successors, (2355), 9 states have internal predecessors, (2355), 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) [2023-01-28 09:01:32,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:32,958 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:32,958 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 177 flow. Second operand 9 states and 2355 transitions. [2023-01-28 09:01:32,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 460 flow [2023-01-28 09:01:32,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 453 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 09:01:32,964 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 297 flow [2023-01-28 09:01:32,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2023-01-28 09:01:32,966 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2023-01-28 09:01:32,966 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 297 flow [2023-01-28 09:01:32,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 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) [2023-01-28 09:01:32,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:32,967 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] [2023-01-28 09:01:32,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 09:01:32,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:32,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:32,968 INFO L85 PathProgramCache]: Analyzing trace with hash -12608099, now seen corresponding path program 3 times [2023-01-28 09:01:32,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:32,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654698785] [2023-01-28 09:01:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:32,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:33,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:33,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654698785] [2023-01-28 09:01:33,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654698785] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:33,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:33,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:01:33,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090276489] [2023-01-28 09:01:33,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:33,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:33,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:33,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:33,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:33,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 736 [2023-01-28 09:01:33,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 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) [2023-01-28 09:01:33,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:33,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 736 [2023-01-28 09:01:33,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:33,860 INFO L130 PetriNetUnfolder]: 127/319 cut-off events. [2023-01-28 09:01:33,861 INFO L131 PetriNetUnfolder]: For 551/551 co-relation queries the response was YES. [2023-01-28 09:01:33,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 319 events. 127/319 cut-off events. For 551/551 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1479 event pairs, 49 based on Foata normal form. 1/319 useless extension candidates. Maximal degree in co-relation 1104. Up to 160 conditions per place. [2023-01-28 09:01:33,863 INFO L137 encePairwiseOnDemand]: 727/736 looper letters, 50 selfloop transitions, 31 changer transitions 5/86 dead transitions. [2023-01-28 09:01:33,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 86 transitions, 643 flow [2023-01-28 09:01:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:01:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:01:33,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2102 transitions. [2023-01-28 09:01:33,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3569972826086957 [2023-01-28 09:01:33,869 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2102 transitions. [2023-01-28 09:01:33,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2102 transitions. [2023-01-28 09:01:33,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:33,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2102 transitions. [2023-01-28 09:01:33,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 262.75) internal successors, (2102), 8 states have internal predecessors, (2102), 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) [2023-01-28 09:01:33,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 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) [2023-01-28 09:01:33,882 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 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) [2023-01-28 09:01:33,882 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 297 flow. Second operand 8 states and 2102 transitions. [2023-01-28 09:01:33,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 86 transitions, 643 flow [2023-01-28 09:01:33,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 629 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:33,887 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 482 flow [2023-01-28 09:01:33,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=482, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2023-01-28 09:01:33,887 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 37 predicate places. [2023-01-28 09:01:33,888 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 482 flow [2023-01-28 09:01:33,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 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) [2023-01-28 09:01:33,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:33,889 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] [2023-01-28 09:01:33,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 09:01:33,889 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:33,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:33,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1226252381, now seen corresponding path program 4 times [2023-01-28 09:01:33,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:33,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436924198] [2023-01-28 09:01:33,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:33,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:34,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:34,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436924198] [2023-01-28 09:01:34,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436924198] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:34,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:34,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:01:34,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167557162] [2023-01-28 09:01:34,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:34,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:34,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:34,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:34,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:34,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 736 [2023-01-28 09:01:34,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 269.14285714285717) internal successors, (1884), 7 states have internal predecessors, (1884), 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) [2023-01-28 09:01:34,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:34,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 736 [2023-01-28 09:01:34,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:35,111 INFO L130 PetriNetUnfolder]: 126/320 cut-off events. [2023-01-28 09:01:35,112 INFO L131 PetriNetUnfolder]: For 769/769 co-relation queries the response was YES. [2023-01-28 09:01:35,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 320 events. 126/320 cut-off events. For 769/769 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1513 event pairs, 37 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1258. Up to 178 conditions per place. [2023-01-28 09:01:35,114 INFO L137 encePairwiseOnDemand]: 729/736 looper letters, 77 selfloop transitions, 12 changer transitions 5/94 dead transitions. [2023-01-28 09:01:35,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 94 transitions, 809 flow [2023-01-28 09:01:35,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:35,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1927 transitions. [2023-01-28 09:01:35,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3740295031055901 [2023-01-28 09:01:35,120 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1927 transitions. [2023-01-28 09:01:35,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1927 transitions. [2023-01-28 09:01:35,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:35,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1927 transitions. [2023-01-28 09:01:35,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 275.2857142857143) internal successors, (1927), 7 states have internal predecessors, (1927), 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) [2023-01-28 09:01:35,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 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) [2023-01-28 09:01:35,133 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 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) [2023-01-28 09:01:35,133 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 482 flow. Second operand 7 states and 1927 transitions. [2023-01-28 09:01:35,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 94 transitions, 809 flow [2023-01-28 09:01:35,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 791 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-01-28 09:01:35,140 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 565 flow [2023-01-28 09:01:35,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=565, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2023-01-28 09:01:35,142 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 46 predicate places. [2023-01-28 09:01:35,142 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 565 flow [2023-01-28 09:01:35,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 269.14285714285717) internal successors, (1884), 7 states have internal predecessors, (1884), 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) [2023-01-28 09:01:35,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:35,143 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] [2023-01-28 09:01:35,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 09:01:35,143 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:35,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:35,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1088873191, now seen corresponding path program 5 times [2023-01-28 09:01:35,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:35,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957461675] [2023-01-28 09:01:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:35,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:35,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:35,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957461675] [2023-01-28 09:01:35,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957461675] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:35,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:35,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:01:35,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260972548] [2023-01-28 09:01:35,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:35,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:35,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:35,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:35,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:35,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 736 [2023-01-28 09:01:35,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 565 flow. Second operand has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 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) [2023-01-28 09:01:35,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:35,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 736 [2023-01-28 09:01:35,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:36,114 INFO L130 PetriNetUnfolder]: 125/313 cut-off events. [2023-01-28 09:01:36,114 INFO L131 PetriNetUnfolder]: For 1118/1118 co-relation queries the response was YES. [2023-01-28 09:01:36,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 313 events. 125/313 cut-off events. For 1118/1118 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1432 event pairs, 53 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1333. Up to 178 conditions per place. [2023-01-28 09:01:36,117 INFO L137 encePairwiseOnDemand]: 728/736 looper letters, 61 selfloop transitions, 19 changer transitions 9/89 dead transitions. [2023-01-28 09:01:36,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 833 flow [2023-01-28 09:01:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:36,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1843 transitions. [2023-01-28 09:01:36,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577251552795031 [2023-01-28 09:01:36,122 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1843 transitions. [2023-01-28 09:01:36,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1843 transitions. [2023-01-28 09:01:36,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:36,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1843 transitions. [2023-01-28 09:01:36,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.2857142857143) internal successors, (1843), 7 states have internal predecessors, (1843), 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) [2023-01-28 09:01:36,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 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) [2023-01-28 09:01:36,132 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 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) [2023-01-28 09:01:36,132 INFO L175 Difference]: Start difference. First operand has 73 places, 66 transitions, 565 flow. Second operand 7 states and 1843 transitions. [2023-01-28 09:01:36,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 833 flow [2023-01-28 09:01:36,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 89 transitions, 818 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:36,141 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 639 flow [2023-01-28 09:01:36,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=639, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2023-01-28 09:01:36,141 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 52 predicate places. [2023-01-28 09:01:36,142 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 639 flow [2023-01-28 09:01:36,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.14285714285717) internal successors, (1807), 7 states have internal predecessors, (1807), 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) [2023-01-28 09:01:36,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:36,142 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] [2023-01-28 09:01:36,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 09:01:36,143 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:36,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:36,143 INFO L85 PathProgramCache]: Analyzing trace with hash 73416431, now seen corresponding path program 6 times [2023-01-28 09:01:36,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:36,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119108019] [2023-01-28 09:01:36,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:36,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:36,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:36,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119108019] [2023-01-28 09:01:36,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119108019] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:36,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:36,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:01:36,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757542574] [2023-01-28 09:01:36,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:36,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:01:36,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:36,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:01:36,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:01:36,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 736 [2023-01-28 09:01:36,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 639 flow. Second operand has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 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) [2023-01-28 09:01:36,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:36,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 736 [2023-01-28 09:01:36,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:37,306 INFO L130 PetriNetUnfolder]: 126/320 cut-off events. [2023-01-28 09:01:37,306 INFO L131 PetriNetUnfolder]: For 1229/1229 co-relation queries the response was YES. [2023-01-28 09:01:37,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 320 events. 126/320 cut-off events. For 1229/1229 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1502 event pairs, 15 based on Foata normal form. 1/320 useless extension candidates. Maximal degree in co-relation 1425. Up to 120 conditions per place. [2023-01-28 09:01:37,308 INFO L137 encePairwiseOnDemand]: 725/736 looper letters, 57 selfloop transitions, 33 changer transitions 5/95 dead transitions. [2023-01-28 09:01:37,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 95 transitions, 948 flow [2023-01-28 09:01:37,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:01:37,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:01:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2507 transitions. [2023-01-28 09:01:37,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2023-01-28 09:01:37,313 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2507 transitions. [2023-01-28 09:01:37,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2507 transitions. [2023-01-28 09:01:37,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:37,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2507 transitions. [2023-01-28 09:01:37,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 250.7) internal successors, (2507), 10 states have internal predecessors, (2507), 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) [2023-01-28 09:01:37,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 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) [2023-01-28 09:01:37,323 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 736.0) internal successors, (8096), 11 states have internal predecessors, (8096), 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) [2023-01-28 09:01:37,323 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 639 flow. Second operand 10 states and 2507 transitions. [2023-01-28 09:01:37,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 95 transitions, 948 flow [2023-01-28 09:01:37,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 95 transitions, 915 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 09:01:37,330 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 779 flow [2023-01-28 09:01:37,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=779, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2023-01-28 09:01:37,331 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 62 predicate places. [2023-01-28 09:01:37,331 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 779 flow [2023-01-28 09:01:37,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 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) [2023-01-28 09:01:37,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:37,332 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] [2023-01-28 09:01:37,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 09:01:37,332 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:37,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash 328223971, now seen corresponding path program 7 times [2023-01-28 09:01:37,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:37,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790152034] [2023-01-28 09:01:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:37,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:38,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:38,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790152034] [2023-01-28 09:01:38,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790152034] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:38,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:38,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:01:38,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240885770] [2023-01-28 09:01:38,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:38,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:01:38,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:38,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:01:38,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:01:38,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 736 [2023-01-28 09:01:38,010 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 779 flow. Second operand has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 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) [2023-01-28 09:01:38,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:38,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 736 [2023-01-28 09:01:38,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:38,325 INFO L130 PetriNetUnfolder]: 125/313 cut-off events. [2023-01-28 09:01:38,326 INFO L131 PetriNetUnfolder]: For 1813/1813 co-relation queries the response was YES. [2023-01-28 09:01:38,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1607 conditions, 313 events. 125/313 cut-off events. For 1813/1813 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1428 event pairs, 41 based on Foata normal form. 1/313 useless extension candidates. Maximal degree in co-relation 1561. Up to 212 conditions per place. [2023-01-28 09:01:38,328 INFO L137 encePairwiseOnDemand]: 725/736 looper letters, 44 selfloop transitions, 39 changer transitions 5/88 dead transitions. [2023-01-28 09:01:38,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 88 transitions, 1019 flow [2023-01-28 09:01:38,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:01:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:01:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2254 transitions. [2023-01-28 09:01:38,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2023-01-28 09:01:38,333 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2254 transitions. [2023-01-28 09:01:38,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2254 transitions. [2023-01-28 09:01:38,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:38,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2254 transitions. [2023-01-28 09:01:38,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.44444444444446) internal successors, (2254), 9 states have internal predecessors, (2254), 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) [2023-01-28 09:01:38,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:38,345 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:38,345 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 779 flow. Second operand 9 states and 2254 transitions. [2023-01-28 09:01:38,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 88 transitions, 1019 flow [2023-01-28 09:01:38,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 88 transitions, 1001 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-28 09:01:38,354 INFO L231 Difference]: Finished difference. Result has 94 places, 75 transitions, 905 flow [2023-01-28 09:01:38,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=905, PETRI_PLACES=94, PETRI_TRANSITIONS=75} [2023-01-28 09:01:38,355 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 67 predicate places. [2023-01-28 09:01:38,355 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 75 transitions, 905 flow [2023-01-28 09:01:38,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 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) [2023-01-28 09:01:38,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:38,356 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] [2023-01-28 09:01:38,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 09:01:38,356 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:38,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:38,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1402950657, now seen corresponding path program 8 times [2023-01-28 09:01:38,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:38,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336457182] [2023-01-28 09:01:38,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:38,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:39,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:39,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336457182] [2023-01-28 09:01:39,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336457182] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:39,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:39,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:01:39,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526880882] [2023-01-28 09:01:39,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:39,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:01:39,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:39,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:01:39,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-01-28 09:01:39,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 736 [2023-01-28 09:01:39,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 75 transitions, 905 flow. Second operand has 11 states, 11 states have (on average 241.0) internal successors, (2651), 11 states have internal predecessors, (2651), 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) [2023-01-28 09:01:39,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:39,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 736 [2023-01-28 09:01:39,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:39,587 INFO L130 PetriNetUnfolder]: 149/375 cut-off events. [2023-01-28 09:01:39,588 INFO L131 PetriNetUnfolder]: For 2815/2815 co-relation queries the response was YES. [2023-01-28 09:01:39,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 375 events. 149/375 cut-off events. For 2815/2815 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1891 event pairs, 11 based on Foata normal form. 1/375 useless extension candidates. Maximal degree in co-relation 2009. Up to 122 conditions per place. [2023-01-28 09:01:39,590 INFO L137 encePairwiseOnDemand]: 726/736 looper letters, 59 selfloop transitions, 46 changer transitions 5/110 dead transitions. [2023-01-28 09:01:39,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 110 transitions, 1344 flow [2023-01-28 09:01:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:01:39,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:01:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2216 transitions. [2023-01-28 09:01:39,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33454106280193235 [2023-01-28 09:01:39,596 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2216 transitions. [2023-01-28 09:01:39,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2216 transitions. [2023-01-28 09:01:39,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:39,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2216 transitions. [2023-01-28 09:01:39,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 246.22222222222223) internal successors, (2216), 9 states have internal predecessors, (2216), 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) [2023-01-28 09:01:39,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:39,604 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:39,604 INFO L175 Difference]: Start difference. First operand has 94 places, 75 transitions, 905 flow. Second operand 9 states and 2216 transitions. [2023-01-28 09:01:39,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 110 transitions, 1344 flow [2023-01-28 09:01:39,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 110 transitions, 1287 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 09:01:39,614 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 1121 flow [2023-01-28 09:01:39,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1121, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2023-01-28 09:01:39,615 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 72 predicate places. [2023-01-28 09:01:39,615 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 1121 flow [2023-01-28 09:01:39,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 241.0) internal successors, (2651), 11 states have internal predecessors, (2651), 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) [2023-01-28 09:01:39,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:39,616 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] [2023-01-28 09:01:39,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 09:01:39,617 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:39,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1906425293, now seen corresponding path program 9 times [2023-01-28 09:01:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:39,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779623328] [2023-01-28 09:01:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:39,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:40,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:40,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779623328] [2023-01-28 09:01:40,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779623328] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:40,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:40,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 09:01:40,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689802498] [2023-01-28 09:01:40,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:40,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-28 09:01:40,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:40,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-28 09:01:40,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-01-28 09:01:40,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 736 [2023-01-28 09:01:40,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 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) [2023-01-28 09:01:40,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:40,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 736 [2023-01-28 09:01:40,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:40,497 INFO L130 PetriNetUnfolder]: 148/368 cut-off events. [2023-01-28 09:01:40,497 INFO L131 PetriNetUnfolder]: For 3810/3810 co-relation queries the response was YES. [2023-01-28 09:01:40,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2227 conditions, 368 events. 148/368 cut-off events. For 3810/3810 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1830 event pairs, 38 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 2174. Up to 196 conditions per place. [2023-01-28 09:01:40,500 INFO L137 encePairwiseOnDemand]: 726/736 looper letters, 62 selfloop transitions, 28 changer transitions 10/100 dead transitions. [2023-01-28 09:01:40,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 100 transitions, 1391 flow [2023-01-28 09:01:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:01:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:01:40,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2258 transitions. [2023-01-28 09:01:40,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3408816425120773 [2023-01-28 09:01:40,504 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2258 transitions. [2023-01-28 09:01:40,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2258 transitions. [2023-01-28 09:01:40,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:40,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2258 transitions. [2023-01-28 09:01:40,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 250.88888888888889) internal successors, (2258), 9 states have internal predecessors, (2258), 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) [2023-01-28 09:01:40,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:40,512 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:40,512 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 1121 flow. Second operand 9 states and 2258 transitions. [2023-01-28 09:01:40,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 100 transitions, 1391 flow [2023-01-28 09:01:40,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 100 transitions, 1368 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-01-28 09:01:40,528 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 1179 flow [2023-01-28 09:01:40,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1179, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2023-01-28 09:01:40,529 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 78 predicate places. [2023-01-28 09:01:40,529 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 1179 flow [2023-01-28 09:01:40,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 247.2) internal successors, (2472), 10 states have internal predecessors, (2472), 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) [2023-01-28 09:01:40,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:40,530 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] [2023-01-28 09:01:40,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 09:01:40,530 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:40,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:40,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1423168621, now seen corresponding path program 10 times [2023-01-28 09:01:40,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:40,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244383211] [2023-01-28 09:01:40,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:40,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:41,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:41,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:41,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244383211] [2023-01-28 09:01:41,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244383211] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:41,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:41,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:01:41,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549713073] [2023-01-28 09:01:41,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:41,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:01:41,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:41,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:01:41,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-01-28 09:01:41,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 736 [2023-01-28 09:01:41,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 1179 flow. Second operand has 11 states, 11 states have (on average 241.0) internal successors, (2651), 11 states have internal predecessors, (2651), 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) [2023-01-28 09:01:41,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:41,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 736 [2023-01-28 09:01:41,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:41,537 INFO L130 PetriNetUnfolder]: 143/352 cut-off events. [2023-01-28 09:01:41,537 INFO L131 PetriNetUnfolder]: For 3798/3798 co-relation queries the response was YES. [2023-01-28 09:01:41,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2222 conditions, 352 events. 143/352 cut-off events. For 3798/3798 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1696 event pairs, 40 based on Foata normal form. 1/352 useless extension candidates. Maximal degree in co-relation 2169. Up to 229 conditions per place. [2023-01-28 09:01:41,541 INFO L137 encePairwiseOnDemand]: 726/736 looper letters, 48 selfloop transitions, 45 changer transitions 5/98 dead transitions. [2023-01-28 09:01:41,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 98 transitions, 1445 flow [2023-01-28 09:01:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:01:41,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:01:41,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1960 transitions. [2023-01-28 09:01:41,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3328804347826087 [2023-01-28 09:01:41,546 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1960 transitions. [2023-01-28 09:01:41,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1960 transitions. [2023-01-28 09:01:41,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:41,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1960 transitions. [2023-01-28 09:01:41,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 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) [2023-01-28 09:01:41,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 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) [2023-01-28 09:01:41,555 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 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) [2023-01-28 09:01:41,555 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 1179 flow. Second operand 8 states and 1960 transitions. [2023-01-28 09:01:41,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 98 transitions, 1445 flow [2023-01-28 09:01:41,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 1375 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-01-28 09:01:41,575 INFO L231 Difference]: Finished difference. Result has 105 places, 85 transitions, 1276 flow [2023-01-28 09:01:41,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1276, PETRI_PLACES=105, PETRI_TRANSITIONS=85} [2023-01-28 09:01:41,576 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 78 predicate places. [2023-01-28 09:01:41,576 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 85 transitions, 1276 flow [2023-01-28 09:01:41,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 241.0) internal successors, (2651), 11 states have internal predecessors, (2651), 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) [2023-01-28 09:01:41,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:41,577 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] [2023-01-28 09:01:41,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 09:01:41,577 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:41,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:41,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1807068179, now seen corresponding path program 11 times [2023-01-28 09:01:41,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:41,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697693324] [2023-01-28 09:01:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:41,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:42,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:42,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697693324] [2023-01-28 09:01:42,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697693324] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:42,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:42,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-28 09:01:42,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129959298] [2023-01-28 09:01:42,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:42,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:01:42,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:42,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:01:42,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-01-28 09:01:42,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 736 [2023-01-28 09:01:42,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 85 transitions, 1276 flow. Second operand has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 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) [2023-01-28 09:01:42,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:42,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 736 [2023-01-28 09:01:42,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:42,814 INFO L130 PetriNetUnfolder]: 143/362 cut-off events. [2023-01-28 09:01:42,814 INFO L131 PetriNetUnfolder]: For 4462/4462 co-relation queries the response was YES. [2023-01-28 09:01:42,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2364 conditions, 362 events. 143/362 cut-off events. For 4462/4462 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1787 event pairs, 22 based on Foata normal form. 2/363 useless extension candidates. Maximal degree in co-relation 2310. Up to 246 conditions per place. [2023-01-28 09:01:42,819 INFO L137 encePairwiseOnDemand]: 729/736 looper letters, 79 selfloop transitions, 18 changer transitions 9/106 dead transitions. [2023-01-28 09:01:42,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 1614 flow [2023-01-28 09:01:42,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:01:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:01:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2050 transitions. [2023-01-28 09:01:42,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34816576086956524 [2023-01-28 09:01:42,824 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2050 transitions. [2023-01-28 09:01:42,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2050 transitions. [2023-01-28 09:01:42,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:42,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2050 transitions. [2023-01-28 09:01:42,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 256.25) internal successors, (2050), 8 states have internal predecessors, (2050), 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) [2023-01-28 09:01:42,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 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) [2023-01-28 09:01:42,833 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 736.0) internal successors, (6624), 9 states have internal predecessors, (6624), 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) [2023-01-28 09:01:42,834 INFO L175 Difference]: Start difference. First operand has 105 places, 85 transitions, 1276 flow. Second operand 8 states and 2050 transitions. [2023-01-28 09:01:42,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 1614 flow [2023-01-28 09:01:42,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 1513 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-28 09:01:42,857 INFO L231 Difference]: Finished difference. Result has 107 places, 83 transitions, 1194 flow [2023-01-28 09:01:42,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1194, PETRI_PLACES=107, PETRI_TRANSITIONS=83} [2023-01-28 09:01:42,859 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 80 predicate places. [2023-01-28 09:01:42,859 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 83 transitions, 1194 flow [2023-01-28 09:01:42,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 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) [2023-01-28 09:01:42,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:42,860 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] [2023-01-28 09:01:42,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 09:01:42,860 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:42,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1455020015, now seen corresponding path program 12 times [2023-01-28 09:01:42,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:42,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201601983] [2023-01-28 09:01:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:42,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:43,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:43,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201601983] [2023-01-28 09:01:43,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201601983] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:43,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:43,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 09:01:43,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346671501] [2023-01-28 09:01:43,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:43,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:01:43,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:43,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:01:43,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-01-28 09:01:43,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 736 [2023-01-28 09:01:43,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 83 transitions, 1194 flow. Second operand has 12 states, 12 states have (on average 234.83333333333334) internal successors, (2818), 12 states have internal predecessors, (2818), 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) [2023-01-28 09:01:43,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:43,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 736 [2023-01-28 09:01:43,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:44,182 INFO L130 PetriNetUnfolder]: 134/336 cut-off events. [2023-01-28 09:01:44,183 INFO L131 PetriNetUnfolder]: For 3865/3865 co-relation queries the response was YES. [2023-01-28 09:01:44,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 336 events. 134/336 cut-off events. For 3865/3865 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1582 event pairs, 13 based on Foata normal form. 1/336 useless extension candidates. Maximal degree in co-relation 2100. Up to 94 conditions per place. [2023-01-28 09:01:44,185 INFO L137 encePairwiseOnDemand]: 725/736 looper letters, 46 selfloop transitions, 47 changer transitions 8/101 dead transitions. [2023-01-28 09:01:44,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 101 transitions, 1475 flow [2023-01-28 09:01:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:01:44,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:01:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2149 transitions. [2023-01-28 09:01:44,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3244263285024155 [2023-01-28 09:01:44,188 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2149 transitions. [2023-01-28 09:01:44,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2149 transitions. [2023-01-28 09:01:44,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:44,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2149 transitions. [2023-01-28 09:01:44,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 238.77777777777777) internal successors, (2149), 9 states have internal predecessors, (2149), 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) [2023-01-28 09:01:44,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:44,196 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:44,196 INFO L175 Difference]: Start difference. First operand has 107 places, 83 transitions, 1194 flow. Second operand 9 states and 2149 transitions. [2023-01-28 09:01:44,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 101 transitions, 1475 flow [2023-01-28 09:01:44,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 101 transitions, 1378 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-01-28 09:01:44,210 INFO L231 Difference]: Finished difference. Result has 104 places, 84 transitions, 1234 flow [2023-01-28 09:01:44,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1234, PETRI_PLACES=104, PETRI_TRANSITIONS=84} [2023-01-28 09:01:44,211 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 77 predicate places. [2023-01-28 09:01:44,211 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 84 transitions, 1234 flow [2023-01-28 09:01:44,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 234.83333333333334) internal successors, (2818), 12 states have internal predecessors, (2818), 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) [2023-01-28 09:01:44,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:44,212 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] [2023-01-28 09:01:44,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 09:01:44,212 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:44,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:44,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1783573119, now seen corresponding path program 1 times [2023-01-28 09:01:44,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:44,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044358936] [2023-01-28 09:01:44,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:44,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:44,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:44,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044358936] [2023-01-28 09:01:44,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044358936] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:44,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:44,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 09:01:44,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553680761] [2023-01-28 09:01:44,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:44,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:01:44,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:44,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:01:44,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:01:44,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 736 [2023-01-28 09:01:44,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 84 transitions, 1234 flow. Second operand has 7 states, 7 states have (on average 264.42857142857144) internal successors, (1851), 7 states have internal predecessors, (1851), 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) [2023-01-28 09:01:44,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:44,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 736 [2023-01-28 09:01:44,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:44,849 INFO L130 PetriNetUnfolder]: 129/337 cut-off events. [2023-01-28 09:01:44,849 INFO L131 PetriNetUnfolder]: For 4233/4233 co-relation queries the response was YES. [2023-01-28 09:01:44,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2202 conditions, 337 events. 129/337 cut-off events. For 4233/4233 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1625 event pairs, 27 based on Foata normal form. 2/338 useless extension candidates. Maximal degree in co-relation 2151. Up to 128 conditions per place. [2023-01-28 09:01:44,852 INFO L137 encePairwiseOnDemand]: 729/736 looper letters, 65 selfloop transitions, 34 changer transitions 9/108 dead transitions. [2023-01-28 09:01:44,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 108 transitions, 1624 flow [2023-01-28 09:01:44,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:01:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:01:44,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1879 transitions. [2023-01-28 09:01:44,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36471273291925466 [2023-01-28 09:01:44,854 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1879 transitions. [2023-01-28 09:01:44,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1879 transitions. [2023-01-28 09:01:44,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:44,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1879 transitions. [2023-01-28 09:01:44,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 268.42857142857144) internal successors, (1879), 7 states have internal predecessors, (1879), 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) [2023-01-28 09:01:44,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 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) [2023-01-28 09:01:44,859 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 736.0) internal successors, (5888), 8 states have internal predecessors, (5888), 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) [2023-01-28 09:01:44,859 INFO L175 Difference]: Start difference. First operand has 104 places, 84 transitions, 1234 flow. Second operand 7 states and 1879 transitions. [2023-01-28 09:01:44,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 108 transitions, 1624 flow [2023-01-28 09:01:44,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 108 transitions, 1500 flow, removed 12 selfloop flow, removed 11 redundant places. [2023-01-28 09:01:44,872 INFO L231 Difference]: Finished difference. Result has 100 places, 85 transitions, 1209 flow [2023-01-28 09:01:44,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1209, PETRI_PLACES=100, PETRI_TRANSITIONS=85} [2023-01-28 09:01:44,872 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 73 predicate places. [2023-01-28 09:01:44,872 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 85 transitions, 1209 flow [2023-01-28 09:01:44,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 264.42857142857144) internal successors, (1851), 7 states have internal predecessors, (1851), 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) [2023-01-28 09:01:44,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:44,873 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] [2023-01-28 09:01:44,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 09:01:44,873 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:44,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:44,873 INFO L85 PathProgramCache]: Analyzing trace with hash -75835145, now seen corresponding path program 2 times [2023-01-28 09:01:44,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:44,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454444241] [2023-01-28 09:01:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:44,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:45,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:45,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454444241] [2023-01-28 09:01:45,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454444241] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:45,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:45,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:01:45,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276308109] [2023-01-28 09:01:45,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:45,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:01:45,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:45,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:01:45,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:01:45,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 736 [2023-01-28 09:01:45,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 85 transitions, 1209 flow. Second operand has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 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) [2023-01-28 09:01:45,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:45,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 736 [2023-01-28 09:01:45,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:45,396 INFO L130 PetriNetUnfolder]: 116/326 cut-off events. [2023-01-28 09:01:45,396 INFO L131 PetriNetUnfolder]: For 3199/3199 co-relation queries the response was YES. [2023-01-28 09:01:45,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2053 conditions, 326 events. 116/326 cut-off events. For 3199/3199 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1605 event pairs, 66 based on Foata normal form. 3/328 useless extension candidates. Maximal degree in co-relation 2005. Up to 248 conditions per place. [2023-01-28 09:01:45,399 INFO L137 encePairwiseOnDemand]: 731/736 looper letters, 58 selfloop transitions, 20 changer transitions 15/93 dead transitions. [2023-01-28 09:01:45,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 93 transitions, 1419 flow [2023-01-28 09:01:45,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:01:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:01:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1396 transitions. [2023-01-28 09:01:45,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793478260869565 [2023-01-28 09:01:45,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1396 transitions. [2023-01-28 09:01:45,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1396 transitions. [2023-01-28 09:01:45,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:45,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1396 transitions. [2023-01-28 09:01:45,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 279.2) internal successors, (1396), 5 states have internal predecessors, (1396), 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) [2023-01-28 09:01:45,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 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) [2023-01-28 09:01:45,410 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 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) [2023-01-28 09:01:45,410 INFO L175 Difference]: Start difference. First operand has 100 places, 85 transitions, 1209 flow. Second operand 5 states and 1396 transitions. [2023-01-28 09:01:45,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 93 transitions, 1419 flow [2023-01-28 09:01:45,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 93 transitions, 1404 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 09:01:45,421 INFO L231 Difference]: Finished difference. Result has 103 places, 76 transitions, 1090 flow [2023-01-28 09:01:45,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1090, PETRI_PLACES=103, PETRI_TRANSITIONS=76} [2023-01-28 09:01:45,421 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 76 predicate places. [2023-01-28 09:01:45,422 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 76 transitions, 1090 flow [2023-01-28 09:01:45,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 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) [2023-01-28 09:01:45,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:45,422 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] [2023-01-28 09:01:45,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 09:01:45,423 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:45,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:45,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1032254093, now seen corresponding path program 3 times [2023-01-28 09:01:45,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:45,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253888806] [2023-01-28 09:01:45,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:45,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:45,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:45,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253888806] [2023-01-28 09:01:45,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253888806] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:45,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:45,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 09:01:45,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80616366] [2023-01-28 09:01:45,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:45,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 09:01:45,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:45,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 09:01:45,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 09:01:45,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 736 [2023-01-28 09:01:45,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 76 transitions, 1090 flow. Second operand has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 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) [2023-01-28 09:01:45,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:45,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 736 [2023-01-28 09:01:45,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:46,004 INFO L130 PetriNetUnfolder]: 102/284 cut-off events. [2023-01-28 09:01:46,004 INFO L131 PetriNetUnfolder]: For 2940/2940 co-relation queries the response was YES. [2023-01-28 09:01:46,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 284 events. 102/284 cut-off events. For 2940/2940 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1343 event pairs, 26 based on Foata normal form. 5/288 useless extension candidates. Maximal degree in co-relation 1819. Up to 115 conditions per place. [2023-01-28 09:01:46,006 INFO L137 encePairwiseOnDemand]: 732/736 looper letters, 38 selfloop transitions, 2 changer transitions 46/86 dead transitions. [2023-01-28 09:01:46,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 86 transitions, 1290 flow [2023-01-28 09:01:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:01:46,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:01:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1400 transitions. [2023-01-28 09:01:46,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804347826086957 [2023-01-28 09:01:46,008 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1400 transitions. [2023-01-28 09:01:46,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1400 transitions. [2023-01-28 09:01:46,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:46,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1400 transitions. [2023-01-28 09:01:46,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 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) [2023-01-28 09:01:46,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 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) [2023-01-28 09:01:46,012 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 736.0) internal successors, (4416), 6 states have internal predecessors, (4416), 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) [2023-01-28 09:01:46,012 INFO L175 Difference]: Start difference. First operand has 103 places, 76 transitions, 1090 flow. Second operand 5 states and 1400 transitions. [2023-01-28 09:01:46,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 86 transitions, 1290 flow [2023-01-28 09:01:46,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 86 transitions, 1225 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-01-28 09:01:46,020 INFO L231 Difference]: Finished difference. Result has 99 places, 37 transitions, 343 flow [2023-01-28 09:01:46,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=99, PETRI_TRANSITIONS=37} [2023-01-28 09:01:46,021 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 72 predicate places. [2023-01-28 09:01:46,021 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 37 transitions, 343 flow [2023-01-28 09:01:46,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 276.8) internal successors, (1384), 5 states have internal predecessors, (1384), 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) [2023-01-28 09:01:46,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:46,021 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] [2023-01-28 09:01:46,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 09:01:46,022 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:46,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:46,022 INFO L85 PathProgramCache]: Analyzing trace with hash -461531297, now seen corresponding path program 4 times [2023-01-28 09:01:46,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:46,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279918841] [2023-01-28 09:01:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:46,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:46,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:46,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279918841] [2023-01-28 09:01:46,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279918841] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:46,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:46,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-01-28 09:01:46,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460682543] [2023-01-28 09:01:46,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:46,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 09:01:46,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:46,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 09:01:46,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-01-28 09:01:46,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 736 [2023-01-28 09:01:46,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 37 transitions, 343 flow. Second operand has 14 states, 14 states have (on average 240.71428571428572) internal successors, (3370), 14 states have internal predecessors, (3370), 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) [2023-01-28 09:01:46,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:46,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 736 [2023-01-28 09:01:46,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:47,312 INFO L130 PetriNetUnfolder]: 26/87 cut-off events. [2023-01-28 09:01:47,312 INFO L131 PetriNetUnfolder]: For 917/917 co-relation queries the response was YES. [2023-01-28 09:01:47,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 87 events. 26/87 cut-off events. For 917/917 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 209 event pairs, 6 based on Foata normal form. 1/87 useless extension candidates. Maximal degree in co-relation 469. Up to 26 conditions per place. [2023-01-28 09:01:47,313 INFO L137 encePairwiseOnDemand]: 727/736 looper letters, 30 selfloop transitions, 8 changer transitions 16/54 dead transitions. [2023-01-28 09:01:47,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 54 transitions, 551 flow [2023-01-28 09:01:47,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:01:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:01:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2196 transitions. [2023-01-28 09:01:47,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33152173913043476 [2023-01-28 09:01:47,317 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2196 transitions. [2023-01-28 09:01:47,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2196 transitions. [2023-01-28 09:01:47,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:47,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2196 transitions. [2023-01-28 09:01:47,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 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) [2023-01-28 09:01:47,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:47,325 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:47,325 INFO L175 Difference]: Start difference. First operand has 99 places, 37 transitions, 343 flow. Second operand 9 states and 2196 transitions. [2023-01-28 09:01:47,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 54 transitions, 551 flow [2023-01-28 09:01:47,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 347 flow, removed 27 selfloop flow, removed 39 redundant places. [2023-01-28 09:01:47,328 INFO L231 Difference]: Finished difference. Result has 57 places, 31 transitions, 166 flow [2023-01-28 09:01:47,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=57, PETRI_TRANSITIONS=31} [2023-01-28 09:01:47,329 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-01-28 09:01:47,329 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 31 transitions, 166 flow [2023-01-28 09:01:47,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 240.71428571428572) internal successors, (3370), 14 states have internal predecessors, (3370), 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) [2023-01-28 09:01:47,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:47,330 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] [2023-01-28 09:01:47,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 09:01:47,330 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:47,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:47,330 INFO L85 PathProgramCache]: Analyzing trace with hash 481613323, now seen corresponding path program 5 times [2023-01-28 09:01:47,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:47,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984132506] [2023-01-28 09:01:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:47,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:48,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:48,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984132506] [2023-01-28 09:01:48,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984132506] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:48,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:48,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 09:01:48,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756806058] [2023-01-28 09:01:48,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:48,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 09:01:48,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:48,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 09:01:48,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-01-28 09:01:48,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 736 [2023-01-28 09:01:48,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 31 transitions, 166 flow. Second operand has 13 states, 13 states have (on average 240.84615384615384) internal successors, (3131), 13 states have internal predecessors, (3131), 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) [2023-01-28 09:01:48,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:48,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 736 [2023-01-28 09:01:48,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:48,448 INFO L130 PetriNetUnfolder]: 9/46 cut-off events. [2023-01-28 09:01:48,448 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-01-28 09:01:48,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 46 events. 9/46 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 3 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 171. Up to 16 conditions per place. [2023-01-28 09:01:48,448 INFO L137 encePairwiseOnDemand]: 728/736 looper letters, 22 selfloop transitions, 6 changer transitions 10/38 dead transitions. [2023-01-28 09:01:48,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 38 transitions, 259 flow [2023-01-28 09:01:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 09:01:48,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 09:01:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2186 transitions. [2023-01-28 09:01:48,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.330012077294686 [2023-01-28 09:01:48,450 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2186 transitions. [2023-01-28 09:01:48,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2186 transitions. [2023-01-28 09:01:48,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:48,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2186 transitions. [2023-01-28 09:01:48,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 242.88888888888889) internal successors, (2186), 9 states have internal predecessors, (2186), 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) [2023-01-28 09:01:48,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:48,457 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 736.0) internal successors, (7360), 10 states have internal predecessors, (7360), 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) [2023-01-28 09:01:48,457 INFO L175 Difference]: Start difference. First operand has 57 places, 31 transitions, 166 flow. Second operand 9 states and 2186 transitions. [2023-01-28 09:01:48,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 38 transitions, 259 flow [2023-01-28 09:01:48,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 218 flow, removed 2 selfloop flow, removed 15 redundant places. [2023-01-28 09:01:48,458 INFO L231 Difference]: Finished difference. Result has 49 places, 28 transitions, 121 flow [2023-01-28 09:01:48,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=121, PETRI_PLACES=49, PETRI_TRANSITIONS=28} [2023-01-28 09:01:48,459 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-01-28 09:01:48,459 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 28 transitions, 121 flow [2023-01-28 09:01:48,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.84615384615384) internal successors, (3131), 13 states have internal predecessors, (3131), 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) [2023-01-28 09:01:48,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:01:48,460 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] [2023-01-28 09:01:48,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 09:01:48,460 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:01:48,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:01:48,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1200415825, now seen corresponding path program 6 times [2023-01-28 09:01:48,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:01:48,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278418778] [2023-01-28 09:01:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:01:48,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:01:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:01:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 09:01:48,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:01:48,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278418778] [2023-01-28 09:01:48,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278418778] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:01:48,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:01:48,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 09:01:48,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570055598] [2023-01-28 09:01:48,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:01:48,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-28 09:01:48,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:01:48,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-28 09:01:48,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-01-28 09:01:48,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 736 [2023-01-28 09:01:48,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 28 transitions, 121 flow. Second operand has 9 states, 9 states have (on average 258.6666666666667) internal successors, (2328), 9 states have internal predecessors, (2328), 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) [2023-01-28 09:01:48,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:01:48,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 736 [2023-01-28 09:01:48,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:01:49,025 INFO L130 PetriNetUnfolder]: 7/33 cut-off events. [2023-01-28 09:01:49,026 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 09:01:49,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 33 events. 7/33 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 112. Up to 18 conditions per place. [2023-01-28 09:01:49,026 INFO L137 encePairwiseOnDemand]: 731/736 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-01-28 09:01:49,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 30 transitions, 184 flow [2023-01-28 09:01:49,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:01:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:01:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1563 transitions. [2023-01-28 09:01:49,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3539402173913043 [2023-01-28 09:01:49,028 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1563 transitions. [2023-01-28 09:01:49,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1563 transitions. [2023-01-28 09:01:49,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:01:49,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1563 transitions. [2023-01-28 09:01:49,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 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) [2023-01-28 09:01:49,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 736.0) internal successors, (5152), 7 states have internal predecessors, (5152), 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) [2023-01-28 09:01:49,032 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 736.0) internal successors, (5152), 7 states have internal predecessors, (5152), 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) [2023-01-28 09:01:49,032 INFO L175 Difference]: Start difference. First operand has 49 places, 28 transitions, 121 flow. Second operand 6 states and 1563 transitions. [2023-01-28 09:01:49,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 30 transitions, 184 flow [2023-01-28 09:01:49,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 158 flow, removed 1 selfloop flow, removed 11 redundant places. [2023-01-28 09:01:49,033 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-01-28 09:01:49,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=736, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-01-28 09:01:49,033 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-01-28 09:01:49,033 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-01-28 09:01:49,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 258.6666666666667) internal successors, (2328), 9 states have internal predecessors, (2328), 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) [2023-01-28 09:01:49,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 09:01:49,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 09:01:49,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 09:01:49,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 09:01:49,036 INFO L445 BasicCegarLoop]: Path program histogram: [12, 6, 1, 1, 1, 1] [2023-01-28 09:01:49,039 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:01:49,039 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:01:49,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:01:49 BasicIcfg [2023-01-28 09:01:49,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:01:49,042 INFO L158 Benchmark]: Toolchain (without parser) took 31187.27ms. Allocated memory was 367.0MB in the beginning and 950.0MB in the end (delta: 583.0MB). Free memory was 315.7MB in the beginning and 790.4MB in the end (delta: -474.7MB). Peak memory consumption was 111.4MB. Max. memory is 16.0GB. [2023-01-28 09:01:49,042 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 214.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:01:49,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.25ms. Allocated memory is still 367.0MB. Free memory was 315.3MB in the beginning and 303.2MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 09:01:49,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.69ms. Allocated memory is still 367.0MB. Free memory was 303.2MB in the beginning and 300.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 09:01:49,042 INFO L158 Benchmark]: Boogie Preprocessor took 38.77ms. Allocated memory is still 367.0MB. Free memory was 300.4MB in the beginning and 298.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:01:49,042 INFO L158 Benchmark]: RCFGBuilder took 547.13ms. Allocated memory is still 367.0MB. Free memory was 298.3MB in the beginning and 319.5MB in the end (delta: -21.2MB). Peak memory consumption was 9.0MB. Max. memory is 16.0GB. [2023-01-28 09:01:49,043 INFO L158 Benchmark]: TraceAbstraction took 30290.91ms. Allocated memory was 367.0MB in the beginning and 950.0MB in the end (delta: 583.0MB). Free memory was 319.2MB in the beginning and 790.4MB in the end (delta: -471.2MB). Peak memory consumption was 112.9MB. Max. memory is 16.0GB. [2023-01-28 09:01:49,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 255.9MB. Free memory is still 214.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 253.25ms. Allocated memory is still 367.0MB. Free memory was 315.3MB in the beginning and 303.2MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.69ms. Allocated memory is still 367.0MB. Free memory was 303.2MB in the beginning and 300.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.77ms. Allocated memory is still 367.0MB. Free memory was 300.4MB in the beginning and 298.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 547.13ms. Allocated memory is still 367.0MB. Free memory was 298.3MB in the beginning and 319.5MB in the end (delta: -21.2MB). Peak memory consumption was 9.0MB. Max. memory is 16.0GB. * TraceAbstraction took 30290.91ms. Allocated memory was 367.0MB in the beginning and 950.0MB in the end (delta: 583.0MB). Free memory was 319.2MB in the beginning and 790.4MB in the end (delta: -471.2MB). Peak memory consumption was 112.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.8s, 312 PlacesBefore, 27 PlacesAfterwards, 333 TransitionsBefore, 25 TransitionsAfterwards, 6048 CoEnabledTransitionPairs, 8 FixpointIterations, 198 TrivialSequentialCompositions, 90 ConcurrentSequentialCompositions, 57 TrivialYvCompositions, 25 ConcurrentYvCompositions, 23 ChoiceCompositions, 393 TotalNumberOfCompositions, 6391 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5583, independent: 5482, independent conditional: 0, independent unconditional: 5482, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3489, independent: 3467, independent conditional: 0, independent unconditional: 3467, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5583, independent: 2015, independent conditional: 0, independent unconditional: 2015, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 3489, unknown conditional: 0, unknown unconditional: 3489] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 93]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 408 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 30.2s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1207 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1207 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4000 IncrementalHoareTripleChecker+Invalid, 4103 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 0 mSDtfsCounter, 4000 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 251 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1276occurred in iteration=14, InterpolantAutomatonStates: 159, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 486 NumberOfCodeBlocks, 486 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 8650 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 78/78 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 09:01:49,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...